tracing: Document trace_marker triggers
Add documentation and an example on how to use trace_marker triggers. Reviewed-by: Tom Zanussi <tom.zanussi@linux.intel.com> Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware)
parent
3be4c1e52a
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d3439f9d6c
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@ -338,10 +338,14 @@ used for conditionally invoking triggers.
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The syntax for event triggers is roughly based on the syntax for
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set_ftrace_filter 'ftrace filter commands' (see the 'Filter commands'
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section of Documentation/trace/ftrace.txt), but there are major
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section of Documentation/trace/ftrace.rst), but there are major
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differences and the implementation isn't currently tied to it in any
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way, so beware about making generalizations between the two.
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Note: Writing into trace_marker (See Documentation/trace/ftrace.rst)
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can also enable triggers that are written into
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/sys/kernel/tracing/events/ftrace/print/trigger
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6.1 Expression syntax
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---------------------
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@ -507,6 +507,11 @@ of ftrace. Here is a list of some of the key files:
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trace_fd = open("trace_marker", WR_ONLY);
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Note: Writing into the trace_marker file can also initiate triggers
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that are written into /sys/kernel/tracing/events/ftrace/print/trigger
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See "Event triggers" in Documentation/trace/events.rst and an
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example in Documentation/trace/histogram.rst (Section 3.)
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trace_marker_raw:
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This is similar to trace_marker above, but is meant for for binary data
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@ -1604,7 +1604,6 @@
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Entries: 7
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Dropped: 0
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2.2 Inter-event hist triggers
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-----------------------------
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@ -1993,3 +1992,547 @@ hist trigger specification.
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Hits: 12970
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Entries: 2
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Dropped: 0
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3. User space creating a trigger
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--------------------------------
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Writing into /sys/kernel/tracing/trace_marker writes into the ftrace
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ring buffer. This can also act like an event, by writing into the trigger
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file located in /sys/kernel/tracing/events/ftrace/print/
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Modifying cyclictest to write into the trace_marker file before it sleeps
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and after it wakes up, something like this:
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static void traceputs(char *str)
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{
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/* tracemark_fd is the trace_marker file descriptor */
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if (tracemark_fd < 0)
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return;
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/* write the tracemark message */
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write(tracemark_fd, str, strlen(str));
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}
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And later add something like:
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traceputs("start");
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clock_nanosleep(...);
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traceputs("end");
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We can make a histogram from this:
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# cd /sys/kernel/tracing
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# echo 'latency u64 lat' > synthetic_events
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# echo 'hist:keys=common_pid:ts0=common_timestamp.usecs if buf == "start"' > events/ftrace/print/trigger
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# echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(ftrace.print).latency($lat) if buf == "end"' >> events/ftrace/print/trigger
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# echo 'hist:keys=lat,common_pid:sort=lat' > events/synthetic/latency/trigger
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The above created a synthetic event called "latency" and two histograms
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against the trace_marker, one gets triggered when "start" is written into the
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trace_marker file and the other when "end" is written. If the pids match, then
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it will call the "latency" synthetic event with the calculated latency as its
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parameter. Finally, a histogram is added to the latency synthetic event to
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record the calculated latency along with the pid.
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Now running cyclictest with:
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# ./cyclictest -p80 -d0 -i250 -n -a -t --tracemark -b 1000
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-p80 : run threads at priority 80
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-d0 : have all threads run at the same interval
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-i250 : start the interval at 250 microseconds (all threads will do this)
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-n : sleep with nanosleep
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-a : affine all threads to a separate CPU
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-t : one thread per available CPU
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--tracemark : enable trace mark writing
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-b 1000 : stop if any latency is greater than 1000 microseconds
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Note, the -b 1000 is used just to make --tracemark available.
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Then we can see the histogram created by this with:
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# cat events/synthetic/latency/hist
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# event histogram
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#
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# trigger info: hist:keys=lat,common_pid:vals=hitcount:sort=lat:size=2048 [active]
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#
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{ lat: 107, common_pid: 2039 } hitcount: 1
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{ lat: 122, common_pid: 2041 } hitcount: 1
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{ lat: 166, common_pid: 2039 } hitcount: 1
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{ lat: 174, common_pid: 2039 } hitcount: 1
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{ lat: 194, common_pid: 2041 } hitcount: 1
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{ lat: 196, common_pid: 2036 } hitcount: 1
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{ lat: 197, common_pid: 2038 } hitcount: 1
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{ lat: 198, common_pid: 2039 } hitcount: 1
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{ lat: 199, common_pid: 2039 } hitcount: 1
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{ lat: 200, common_pid: 2041 } hitcount: 1
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{ lat: 201, common_pid: 2039 } hitcount: 2
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{ lat: 202, common_pid: 2038 } hitcount: 1
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{ lat: 202, common_pid: 2043 } hitcount: 1
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{ lat: 203, common_pid: 2039 } hitcount: 1
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{ lat: 203, common_pid: 2036 } hitcount: 1
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{ lat: 203, common_pid: 2041 } hitcount: 1
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{ lat: 206, common_pid: 2038 } hitcount: 2
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{ lat: 207, common_pid: 2039 } hitcount: 1
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{ lat: 207, common_pid: 2036 } hitcount: 1
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{ lat: 208, common_pid: 2040 } hitcount: 1
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{ lat: 209, common_pid: 2043 } hitcount: 1
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{ lat: 210, common_pid: 2039 } hitcount: 1
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{ lat: 211, common_pid: 2039 } hitcount: 4
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{ lat: 212, common_pid: 2043 } hitcount: 1
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{ lat: 212, common_pid: 2039 } hitcount: 2
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{ lat: 213, common_pid: 2039 } hitcount: 1
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{ lat: 214, common_pid: 2038 } hitcount: 1
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{ lat: 214, common_pid: 2039 } hitcount: 2
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{ lat: 214, common_pid: 2042 } hitcount: 1
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{ lat: 215, common_pid: 2039 } hitcount: 1
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{ lat: 217, common_pid: 2036 } hitcount: 1
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{ lat: 217, common_pid: 2040 } hitcount: 1
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{ lat: 217, common_pid: 2039 } hitcount: 1
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{ lat: 218, common_pid: 2039 } hitcount: 6
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{ lat: 219, common_pid: 2039 } hitcount: 9
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{ lat: 220, common_pid: 2039 } hitcount: 11
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{ lat: 221, common_pid: 2039 } hitcount: 5
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{ lat: 221, common_pid: 2042 } hitcount: 1
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{ lat: 222, common_pid: 2039 } hitcount: 7
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{ lat: 223, common_pid: 2036 } hitcount: 1
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{ lat: 223, common_pid: 2039 } hitcount: 3
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{ lat: 224, common_pid: 2039 } hitcount: 4
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{ lat: 224, common_pid: 2037 } hitcount: 1
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{ lat: 224, common_pid: 2036 } hitcount: 2
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{ lat: 225, common_pid: 2039 } hitcount: 5
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{ lat: 225, common_pid: 2042 } hitcount: 1
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{ lat: 226, common_pid: 2039 } hitcount: 7
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{ lat: 226, common_pid: 2036 } hitcount: 4
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{ lat: 227, common_pid: 2039 } hitcount: 6
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{ lat: 227, common_pid: 2036 } hitcount: 12
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{ lat: 227, common_pid: 2043 } hitcount: 1
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{ lat: 228, common_pid: 2039 } hitcount: 7
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{ lat: 228, common_pid: 2036 } hitcount: 14
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{ lat: 229, common_pid: 2039 } hitcount: 9
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{ lat: 229, common_pid: 2036 } hitcount: 8
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{ lat: 229, common_pid: 2038 } hitcount: 1
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{ lat: 230, common_pid: 2039 } hitcount: 11
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{ lat: 230, common_pid: 2036 } hitcount: 6
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{ lat: 230, common_pid: 2043 } hitcount: 1
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{ lat: 230, common_pid: 2042 } hitcount: 2
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{ lat: 231, common_pid: 2041 } hitcount: 1
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{ lat: 231, common_pid: 2036 } hitcount: 6
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{ lat: 231, common_pid: 2043 } hitcount: 1
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{ lat: 231, common_pid: 2039 } hitcount: 8
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{ lat: 232, common_pid: 2037 } hitcount: 1
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{ lat: 232, common_pid: 2039 } hitcount: 6
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{ lat: 232, common_pid: 2040 } hitcount: 2
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{ lat: 232, common_pid: 2036 } hitcount: 5
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{ lat: 232, common_pid: 2043 } hitcount: 1
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{ lat: 233, common_pid: 2036 } hitcount: 5
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{ lat: 233, common_pid: 2039 } hitcount: 11
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{ lat: 234, common_pid: 2039 } hitcount: 4
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{ lat: 234, common_pid: 2038 } hitcount: 2
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{ lat: 234, common_pid: 2043 } hitcount: 2
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{ lat: 234, common_pid: 2036 } hitcount: 11
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{ lat: 234, common_pid: 2040 } hitcount: 1
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{ lat: 235, common_pid: 2037 } hitcount: 2
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{ lat: 235, common_pid: 2036 } hitcount: 8
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{ lat: 235, common_pid: 2043 } hitcount: 2
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{ lat: 235, common_pid: 2039 } hitcount: 5
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{ lat: 235, common_pid: 2042 } hitcount: 2
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{ lat: 235, common_pid: 2040 } hitcount: 4
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{ lat: 235, common_pid: 2041 } hitcount: 1
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{ lat: 236, common_pid: 2036 } hitcount: 7
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{ lat: 236, common_pid: 2037 } hitcount: 1
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{ lat: 236, common_pid: 2041 } hitcount: 5
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{ lat: 236, common_pid: 2039 } hitcount: 3
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{ lat: 236, common_pid: 2043 } hitcount: 9
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{ lat: 236, common_pid: 2040 } hitcount: 7
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{ lat: 237, common_pid: 2037 } hitcount: 1
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{ lat: 237, common_pid: 2040 } hitcount: 1
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{ lat: 237, common_pid: 2036 } hitcount: 9
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{ lat: 237, common_pid: 2039 } hitcount: 3
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{ lat: 237, common_pid: 2043 } hitcount: 8
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{ lat: 237, common_pid: 2042 } hitcount: 2
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{ lat: 237, common_pid: 2041 } hitcount: 2
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{ lat: 238, common_pid: 2043 } hitcount: 10
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{ lat: 238, common_pid: 2040 } hitcount: 1
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{ lat: 238, common_pid: 2037 } hitcount: 9
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{ lat: 238, common_pid: 2038 } hitcount: 1
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{ lat: 238, common_pid: 2039 } hitcount: 1
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{ lat: 238, common_pid: 2042 } hitcount: 3
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{ lat: 238, common_pid: 2036 } hitcount: 7
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{ lat: 239, common_pid: 2041 } hitcount: 1
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{ lat: 239, common_pid: 2043 } hitcount: 11
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{ lat: 239, common_pid: 2037 } hitcount: 11
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{ lat: 239, common_pid: 2038 } hitcount: 6
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{ lat: 239, common_pid: 2036 } hitcount: 7
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{ lat: 239, common_pid: 2040 } hitcount: 1
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{ lat: 239, common_pid: 2042 } hitcount: 9
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{ lat: 240, common_pid: 2037 } hitcount: 29
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{ lat: 240, common_pid: 2043 } hitcount: 15
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{ lat: 240, common_pid: 2040 } hitcount: 44
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{ lat: 240, common_pid: 2039 } hitcount: 1
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{ lat: 240, common_pid: 2041 } hitcount: 2
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{ lat: 240, common_pid: 2038 } hitcount: 1
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{ lat: 240, common_pid: 2036 } hitcount: 10
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{ lat: 240, common_pid: 2042 } hitcount: 13
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{ lat: 241, common_pid: 2036 } hitcount: 21
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{ lat: 241, common_pid: 2041 } hitcount: 36
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{ lat: 241, common_pid: 2037 } hitcount: 34
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{ lat: 241, common_pid: 2042 } hitcount: 14
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{ lat: 241, common_pid: 2040 } hitcount: 94
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{ lat: 241, common_pid: 2039 } hitcount: 12
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{ lat: 241, common_pid: 2038 } hitcount: 2
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{ lat: 241, common_pid: 2043 } hitcount: 28
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{ lat: 242, common_pid: 2040 } hitcount: 109
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{ lat: 242, common_pid: 2041 } hitcount: 506
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{ lat: 242, common_pid: 2039 } hitcount: 155
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{ lat: 242, common_pid: 2042 } hitcount: 21
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{ lat: 242, common_pid: 2037 } hitcount: 52
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{ lat: 242, common_pid: 2043 } hitcount: 21
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{ lat: 242, common_pid: 2036 } hitcount: 16
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{ lat: 242, common_pid: 2038 } hitcount: 156
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{ lat: 243, common_pid: 2037 } hitcount: 46
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{ lat: 243, common_pid: 2039 } hitcount: 40
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{ lat: 243, common_pid: 2042 } hitcount: 119
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{ lat: 243, common_pid: 2041 } hitcount: 611
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{ lat: 243, common_pid: 2036 } hitcount: 69
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{ lat: 243, common_pid: 2038 } hitcount: 784
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{ lat: 243, common_pid: 2040 } hitcount: 323
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{ lat: 243, common_pid: 2043 } hitcount: 14
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{ lat: 244, common_pid: 2043 } hitcount: 35
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{ lat: 244, common_pid: 2042 } hitcount: 305
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{ lat: 244, common_pid: 2039 } hitcount: 8
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{ lat: 244, common_pid: 2040 } hitcount: 4515
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{ lat: 244, common_pid: 2038 } hitcount: 371
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{ lat: 244, common_pid: 2037 } hitcount: 31
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{ lat: 244, common_pid: 2036 } hitcount: 114
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{ lat: 244, common_pid: 2041 } hitcount: 3396
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{ lat: 245, common_pid: 2036 } hitcount: 700
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{ lat: 245, common_pid: 2041 } hitcount: 2772
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{ lat: 245, common_pid: 2037 } hitcount: 268
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{ lat: 245, common_pid: 2039 } hitcount: 472
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{ lat: 245, common_pid: 2038 } hitcount: 2758
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{ lat: 245, common_pid: 2042 } hitcount: 3833
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{ lat: 245, common_pid: 2040 } hitcount: 3105
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{ lat: 245, common_pid: 2043 } hitcount: 645
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{ lat: 246, common_pid: 2038 } hitcount: 3451
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{ lat: 246, common_pid: 2041 } hitcount: 142
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{ lat: 246, common_pid: 2037 } hitcount: 5101
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{ lat: 246, common_pid: 2040 } hitcount: 68
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{ lat: 246, common_pid: 2043 } hitcount: 5099
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{ lat: 246, common_pid: 2039 } hitcount: 5608
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{ lat: 246, common_pid: 2042 } hitcount: 3723
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{ lat: 246, common_pid: 2036 } hitcount: 4738
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{ lat: 247, common_pid: 2042 } hitcount: 312
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{ lat: 247, common_pid: 2043 } hitcount: 2385
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{ lat: 247, common_pid: 2041 } hitcount: 452
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{ lat: 247, common_pid: 2038 } hitcount: 792
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{ lat: 247, common_pid: 2040 } hitcount: 78
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{ lat: 247, common_pid: 2036 } hitcount: 2375
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{ lat: 247, common_pid: 2039 } hitcount: 1834
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{ lat: 247, common_pid: 2037 } hitcount: 2655
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{ lat: 248, common_pid: 2037 } hitcount: 36
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{ lat: 248, common_pid: 2042 } hitcount: 11
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{ lat: 248, common_pid: 2038 } hitcount: 122
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{ lat: 248, common_pid: 2036 } hitcount: 135
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{ lat: 248, common_pid: 2039 } hitcount: 26
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{ lat: 248, common_pid: 2041 } hitcount: 503
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{ lat: 248, common_pid: 2043 } hitcount: 66
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{ lat: 248, common_pid: 2040 } hitcount: 46
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{ lat: 249, common_pid: 2037 } hitcount: 29
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{ lat: 249, common_pid: 2038 } hitcount: 1
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{ lat: 249, common_pid: 2043 } hitcount: 29
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{ lat: 249, common_pid: 2039 } hitcount: 8
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{ lat: 249, common_pid: 2042 } hitcount: 56
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{ lat: 249, common_pid: 2040 } hitcount: 27
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{ lat: 249, common_pid: 2041 } hitcount: 11
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{ lat: 249, common_pid: 2036 } hitcount: 27
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{ lat: 250, common_pid: 2038 } hitcount: 1
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{ lat: 250, common_pid: 2036 } hitcount: 30
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{ lat: 250, common_pid: 2040 } hitcount: 19
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{ lat: 250, common_pid: 2043 } hitcount: 22
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{ lat: 250, common_pid: 2042 } hitcount: 20
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{ lat: 250, common_pid: 2041 } hitcount: 1
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{ lat: 250, common_pid: 2039 } hitcount: 6
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{ lat: 250, common_pid: 2037 } hitcount: 48
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{ lat: 251, common_pid: 2037 } hitcount: 43
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{ lat: 251, common_pid: 2039 } hitcount: 1
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{ lat: 251, common_pid: 2036 } hitcount: 12
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{ lat: 251, common_pid: 2042 } hitcount: 2
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{ lat: 251, common_pid: 2041 } hitcount: 1
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{ lat: 251, common_pid: 2043 } hitcount: 15
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{ lat: 251, common_pid: 2040 } hitcount: 3
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{ lat: 252, common_pid: 2040 } hitcount: 1
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{ lat: 252, common_pid: 2036 } hitcount: 12
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{ lat: 252, common_pid: 2037 } hitcount: 21
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{ lat: 252, common_pid: 2043 } hitcount: 14
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{ lat: 253, common_pid: 2037 } hitcount: 21
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{ lat: 253, common_pid: 2039 } hitcount: 2
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{ lat: 253, common_pid: 2036 } hitcount: 9
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{ lat: 253, common_pid: 2043 } hitcount: 6
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{ lat: 253, common_pid: 2040 } hitcount: 1
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{ lat: 254, common_pid: 2036 } hitcount: 8
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{ lat: 254, common_pid: 2043 } hitcount: 3
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{ lat: 254, common_pid: 2041 } hitcount: 1
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{ lat: 254, common_pid: 2042 } hitcount: 1
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{ lat: 254, common_pid: 2039 } hitcount: 1
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{ lat: 254, common_pid: 2037 } hitcount: 12
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{ lat: 255, common_pid: 2043 } hitcount: 1
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{ lat: 255, common_pid: 2037 } hitcount: 2
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{ lat: 255, common_pid: 2036 } hitcount: 2
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{ lat: 255, common_pid: 2039 } hitcount: 8
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{ lat: 256, common_pid: 2043 } hitcount: 1
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{ lat: 256, common_pid: 2036 } hitcount: 4
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{ lat: 256, common_pid: 2039 } hitcount: 6
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{ lat: 257, common_pid: 2039 } hitcount: 5
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{ lat: 257, common_pid: 2036 } hitcount: 4
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{ lat: 258, common_pid: 2039 } hitcount: 5
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{ lat: 258, common_pid: 2036 } hitcount: 2
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{ lat: 259, common_pid: 2036 } hitcount: 7
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{ lat: 259, common_pid: 2039 } hitcount: 7
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{ lat: 260, common_pid: 2036 } hitcount: 8
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{ lat: 260, common_pid: 2039 } hitcount: 6
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{ lat: 261, common_pid: 2036 } hitcount: 5
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{ lat: 261, common_pid: 2039 } hitcount: 7
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{ lat: 262, common_pid: 2039 } hitcount: 5
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{ lat: 262, common_pid: 2036 } hitcount: 5
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{ lat: 263, common_pid: 2039 } hitcount: 7
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{ lat: 263, common_pid: 2036 } hitcount: 7
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{ lat: 264, common_pid: 2039 } hitcount: 9
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{ lat: 264, common_pid: 2036 } hitcount: 9
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{ lat: 265, common_pid: 2036 } hitcount: 5
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{ lat: 265, common_pid: 2039 } hitcount: 1
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{ lat: 266, common_pid: 2036 } hitcount: 1
|
||||
{ lat: 266, common_pid: 2039 } hitcount: 3
|
||||
{ lat: 267, common_pid: 2036 } hitcount: 1
|
||||
{ lat: 267, common_pid: 2039 } hitcount: 3
|
||||
{ lat: 268, common_pid: 2036 } hitcount: 1
|
||||
{ lat: 268, common_pid: 2039 } hitcount: 6
|
||||
{ lat: 269, common_pid: 2036 } hitcount: 1
|
||||
{ lat: 269, common_pid: 2043 } hitcount: 1
|
||||
{ lat: 269, common_pid: 2039 } hitcount: 2
|
||||
{ lat: 270, common_pid: 2040 } hitcount: 1
|
||||
{ lat: 270, common_pid: 2039 } hitcount: 6
|
||||
{ lat: 271, common_pid: 2041 } hitcount: 1
|
||||
{ lat: 271, common_pid: 2039 } hitcount: 5
|
||||
{ lat: 272, common_pid: 2039 } hitcount: 10
|
||||
{ lat: 273, common_pid: 2039 } hitcount: 8
|
||||
{ lat: 274, common_pid: 2039 } hitcount: 2
|
||||
{ lat: 275, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 276, common_pid: 2039 } hitcount: 2
|
||||
{ lat: 276, common_pid: 2037 } hitcount: 1
|
||||
{ lat: 276, common_pid: 2038 } hitcount: 1
|
||||
{ lat: 277, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 277, common_pid: 2042 } hitcount: 1
|
||||
{ lat: 278, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 279, common_pid: 2039 } hitcount: 4
|
||||
{ lat: 279, common_pid: 2043 } hitcount: 1
|
||||
{ lat: 280, common_pid: 2039 } hitcount: 3
|
||||
{ lat: 283, common_pid: 2036 } hitcount: 2
|
||||
{ lat: 284, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 284, common_pid: 2043 } hitcount: 1
|
||||
{ lat: 288, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 289, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 300, common_pid: 2039 } hitcount: 1
|
||||
{ lat: 384, common_pid: 2039 } hitcount: 1
|
||||
|
||||
Totals:
|
||||
Hits: 67625
|
||||
Entries: 278
|
||||
Dropped: 0
|
||||
|
||||
Note, the writes are around the sleep, so ideally they will all be of 250
|
||||
microseconds. If you are wondering how there are several that are under
|
||||
250 microseconds, that is because the way cyclictest works, is if one
|
||||
iteration comes in late, the next one will set the timer to wake up less that
|
||||
250. That is, if an iteration came in 50 microseconds late, the next wake up
|
||||
will be at 200 microseconds.
|
||||
|
||||
But this could easily be done in userspace. To make this even more
|
||||
interesting, we can mix the histogram between events that happened in the
|
||||
kernel with trace_marker.
|
||||
|
||||
# cd /sys/kernel/tracing
|
||||
# echo 'latency u64 lat' > synthetic_events
|
||||
# echo 'hist:keys=pid:ts0=common_timestamp.usecs' > events/sched/sched_waking/trigger
|
||||
# echo 'hist:keys=common_pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).latency($lat) if buf == "end"' > events/ftrace/print/trigger
|
||||
# echo 'hist:keys=lat,common_pid:sort=lat' > events/synthetic/latency/trigger
|
||||
|
||||
The difference this time is that instead of using the trace_marker to start
|
||||
the latency, the sched_waking event is used, matching the common_pid for the
|
||||
trace_marker write with the pid that is being woken by sched_waking.
|
||||
|
||||
After running cyclictest again with the same parameters, we now have:
|
||||
|
||||
# cat events/synthetic/latency/hist
|
||||
# event histogram
|
||||
#
|
||||
# trigger info: hist:keys=lat,common_pid:vals=hitcount:sort=lat:size=2048 [active]
|
||||
#
|
||||
|
||||
{ lat: 7, common_pid: 2302 } hitcount: 640
|
||||
{ lat: 7, common_pid: 2299 } hitcount: 42
|
||||
{ lat: 7, common_pid: 2303 } hitcount: 18
|
||||
{ lat: 7, common_pid: 2305 } hitcount: 166
|
||||
{ lat: 7, common_pid: 2306 } hitcount: 1
|
||||
{ lat: 7, common_pid: 2301 } hitcount: 91
|
||||
{ lat: 7, common_pid: 2300 } hitcount: 17
|
||||
{ lat: 8, common_pid: 2303 } hitcount: 8296
|
||||
{ lat: 8, common_pid: 2304 } hitcount: 6864
|
||||
{ lat: 8, common_pid: 2305 } hitcount: 9464
|
||||
{ lat: 8, common_pid: 2301 } hitcount: 9213
|
||||
{ lat: 8, common_pid: 2306 } hitcount: 6246
|
||||
{ lat: 8, common_pid: 2302 } hitcount: 8797
|
||||
{ lat: 8, common_pid: 2299 } hitcount: 8771
|
||||
{ lat: 8, common_pid: 2300 } hitcount: 8119
|
||||
{ lat: 9, common_pid: 2305 } hitcount: 1519
|
||||
{ lat: 9, common_pid: 2299 } hitcount: 2346
|
||||
{ lat: 9, common_pid: 2303 } hitcount: 2841
|
||||
{ lat: 9, common_pid: 2301 } hitcount: 1846
|
||||
{ lat: 9, common_pid: 2304 } hitcount: 3861
|
||||
{ lat: 9, common_pid: 2302 } hitcount: 1210
|
||||
{ lat: 9, common_pid: 2300 } hitcount: 2762
|
||||
{ lat: 9, common_pid: 2306 } hitcount: 4247
|
||||
{ lat: 10, common_pid: 2299 } hitcount: 16
|
||||
{ lat: 10, common_pid: 2306 } hitcount: 333
|
||||
{ lat: 10, common_pid: 2303 } hitcount: 16
|
||||
{ lat: 10, common_pid: 2304 } hitcount: 168
|
||||
{ lat: 10, common_pid: 2302 } hitcount: 240
|
||||
{ lat: 10, common_pid: 2301 } hitcount: 28
|
||||
{ lat: 10, common_pid: 2300 } hitcount: 95
|
||||
{ lat: 10, common_pid: 2305 } hitcount: 18
|
||||
{ lat: 11, common_pid: 2303 } hitcount: 5
|
||||
{ lat: 11, common_pid: 2305 } hitcount: 8
|
||||
{ lat: 11, common_pid: 2306 } hitcount: 221
|
||||
{ lat: 11, common_pid: 2302 } hitcount: 76
|
||||
{ lat: 11, common_pid: 2304 } hitcount: 26
|
||||
{ lat: 11, common_pid: 2300 } hitcount: 125
|
||||
{ lat: 11, common_pid: 2299 } hitcount: 2
|
||||
{ lat: 12, common_pid: 2305 } hitcount: 3
|
||||
{ lat: 12, common_pid: 2300 } hitcount: 6
|
||||
{ lat: 12, common_pid: 2306 } hitcount: 90
|
||||
{ lat: 12, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 12, common_pid: 2303 } hitcount: 1
|
||||
{ lat: 12, common_pid: 2304 } hitcount: 122
|
||||
{ lat: 13, common_pid: 2300 } hitcount: 12
|
||||
{ lat: 13, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 13, common_pid: 2306 } hitcount: 32
|
||||
{ lat: 13, common_pid: 2302 } hitcount: 5
|
||||
{ lat: 13, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 13, common_pid: 2303 } hitcount: 1
|
||||
{ lat: 13, common_pid: 2304 } hitcount: 61
|
||||
{ lat: 14, common_pid: 2303 } hitcount: 4
|
||||
{ lat: 14, common_pid: 2306 } hitcount: 5
|
||||
{ lat: 14, common_pid: 2305 } hitcount: 4
|
||||
{ lat: 14, common_pid: 2304 } hitcount: 62
|
||||
{ lat: 14, common_pid: 2302 } hitcount: 19
|
||||
{ lat: 14, common_pid: 2300 } hitcount: 33
|
||||
{ lat: 14, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 14, common_pid: 2301 } hitcount: 4
|
||||
{ lat: 15, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 15, common_pid: 2302 } hitcount: 25
|
||||
{ lat: 15, common_pid: 2300 } hitcount: 11
|
||||
{ lat: 15, common_pid: 2299 } hitcount: 5
|
||||
{ lat: 15, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 15, common_pid: 2304 } hitcount: 8
|
||||
{ lat: 15, common_pid: 2303 } hitcount: 1
|
||||
{ lat: 15, common_pid: 2306 } hitcount: 6
|
||||
{ lat: 16, common_pid: 2302 } hitcount: 31
|
||||
{ lat: 16, common_pid: 2306 } hitcount: 3
|
||||
{ lat: 16, common_pid: 2300 } hitcount: 5
|
||||
{ lat: 17, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 17, common_pid: 2303 } hitcount: 1
|
||||
{ lat: 18, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 18, common_pid: 2302 } hitcount: 8
|
||||
{ lat: 18, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 18, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 19, common_pid: 2303 } hitcount: 4
|
||||
{ lat: 19, common_pid: 2304 } hitcount: 5
|
||||
{ lat: 19, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 19, common_pid: 2299 } hitcount: 3
|
||||
{ lat: 19, common_pid: 2306 } hitcount: 1
|
||||
{ lat: 19, common_pid: 2300 } hitcount: 4
|
||||
{ lat: 19, common_pid: 2305 } hitcount: 5
|
||||
{ lat: 20, common_pid: 2299 } hitcount: 2
|
||||
{ lat: 20, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 20, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 20, common_pid: 2300 } hitcount: 2
|
||||
{ lat: 20, common_pid: 2301 } hitcount: 2
|
||||
{ lat: 20, common_pid: 2303 } hitcount: 3
|
||||
{ lat: 21, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 21, common_pid: 2299 } hitcount: 5
|
||||
{ lat: 21, common_pid: 2303 } hitcount: 4
|
||||
{ lat: 21, common_pid: 2302 } hitcount: 7
|
||||
{ lat: 21, common_pid: 2300 } hitcount: 1
|
||||
{ lat: 21, common_pid: 2301 } hitcount: 5
|
||||
{ lat: 21, common_pid: 2304 } hitcount: 2
|
||||
{ lat: 22, common_pid: 2302 } hitcount: 5
|
||||
{ lat: 22, common_pid: 2303 } hitcount: 1
|
||||
{ lat: 22, common_pid: 2306 } hitcount: 3
|
||||
{ lat: 22, common_pid: 2301 } hitcount: 2
|
||||
{ lat: 22, common_pid: 2300 } hitcount: 1
|
||||
{ lat: 22, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 22, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 22, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 23, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 23, common_pid: 2306 } hitcount: 2
|
||||
{ lat: 23, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 24, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 24, common_pid: 2300 } hitcount: 1
|
||||
{ lat: 24, common_pid: 2306 } hitcount: 2
|
||||
{ lat: 24, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 24, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 25, common_pid: 2300 } hitcount: 1
|
||||
{ lat: 25, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 26, common_pid: 2302 } hitcount: 2
|
||||
{ lat: 27, common_pid: 2305 } hitcount: 1
|
||||
{ lat: 27, common_pid: 2300 } hitcount: 1
|
||||
{ lat: 27, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 28, common_pid: 2306 } hitcount: 1
|
||||
{ lat: 28, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 29, common_pid: 2302 } hitcount: 1
|
||||
{ lat: 29, common_pid: 2300 } hitcount: 2
|
||||
{ lat: 29, common_pid: 2306 } hitcount: 1
|
||||
{ lat: 29, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 30, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 31, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 32, common_pid: 2302 } hitcount: 1
|
||||
{ lat: 33, common_pid: 2299 } hitcount: 1
|
||||
{ lat: 33, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 34, common_pid: 2302 } hitcount: 2
|
||||
{ lat: 35, common_pid: 2302 } hitcount: 1
|
||||
{ lat: 35, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 36, common_pid: 2302 } hitcount: 4
|
||||
{ lat: 37, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 38, common_pid: 2302 } hitcount: 2
|
||||
{ lat: 39, common_pid: 2302 } hitcount: 2
|
||||
{ lat: 39, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 40, common_pid: 2304 } hitcount: 2
|
||||
{ lat: 40, common_pid: 2302 } hitcount: 5
|
||||
{ lat: 41, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 41, common_pid: 2302 } hitcount: 8
|
||||
{ lat: 42, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 42, common_pid: 2304 } hitcount: 1
|
||||
{ lat: 43, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 43, common_pid: 2304 } hitcount: 4
|
||||
{ lat: 44, common_pid: 2302 } hitcount: 6
|
||||
{ lat: 45, common_pid: 2302 } hitcount: 5
|
||||
{ lat: 46, common_pid: 2302 } hitcount: 5
|
||||
{ lat: 47, common_pid: 2302 } hitcount: 7
|
||||
{ lat: 48, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 48, common_pid: 2302 } hitcount: 9
|
||||
{ lat: 49, common_pid: 2302 } hitcount: 3
|
||||
{ lat: 50, common_pid: 2302 } hitcount: 1
|
||||
{ lat: 50, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 51, common_pid: 2302 } hitcount: 2
|
||||
{ lat: 51, common_pid: 2301 } hitcount: 1
|
||||
{ lat: 61, common_pid: 2302 } hitcount: 1
|
||||
{ lat: 110, common_pid: 2302 } hitcount: 1
|
||||
|
||||
Totals:
|
||||
Hits: 89565
|
||||
Entries: 158
|
||||
Dropped: 0
|
||||
|
||||
This doesn't tell us any information about how late cyclictest may have
|
||||
woken up, but it does show us a nice histogram of how long it took from
|
||||
the time that cyclictest was woken to the time it made it into user space.
|
||||
|
|
|
|||
Loading…
Reference in New Issue