Yang Zhong 5a22ab7162 rcu: reduce more than 7MB heap memory by malloc_trim() ... Since there are some issues in memory alloc/free machenism in glibc for little chunk memory, if Qemu frequently alloc/free little chunk memory, the glibc doesn't alloc little chunk memory from free list of glibc and still allocate from OS, which make the heap size bigger and bigger. This patch introduce malloc_trim(), which will free heap memory when there is no rcu call during rcu thread loop. malloc_trim() can be enabled/disabled by --enable-malloc-trim/ --disable-malloc-trim in the Qemu configure command. The default malloc_trim() is enabled for libc. Below are test results from smaps file. (1)without patch 55f0783e1000-55f07992a000 rw-p 00000000 00:00 0 [heap] Size: 21796 kB Rss: 14260 kB Pss: 14260 kB (2)with patch 55cc5fadf000-55cc61008000 rw-p 00000000 00:00 0 [heap] Size: 21668 kB Rss: 6940 kB Pss: 6940 kB Signed-off-by: Yang Zhong <yang.zhong@intel.com> Message-Id: <1513775806-19779-1-git-send-email-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2017-12-21 09:30:32 +01:00
..
acl.c
aio-posix.c	aio-posix: drop QEMU_AIO_POLL_MAX_NS env var	2017-11-06 11:04:38 +00:00
aio-win32.c	util/aio-win32: Only select on what we are actually waiting for	2017-07-17 15:58:37 +01:00
aiocb.c
async.c	coroutine: abort if we try to schedule or enter a pending coroutine	2017-11-21 11:58:07 -05:00
base64.c
bitmap.c	bitmap: provide to_le/from_le helpers	2017-09-22 14:11:25 +02:00
bitops.c	bitmap: remove BITOP_WORD()	2017-09-22 14:11:23 +02:00
buffer.c
bufferiszero.c	util: Introduce include/qemu/cpuid.h	2017-07-24 12:42:55 +01:00
cacheinfo.c	configure: Drop AIX host support	2017-09-07 19:02:30 +01:00
compatfd.c
coroutine-sigaltstack.c
coroutine-ucontext.c
coroutine-win32.c
crc32c.c
cutils.c	Convert remaining single line fprintf() to warn_report()	2017-09-19 16:20:49 +02:00
envlist.c
error.c	error: Implement the warn and free Error functions	2017-07-13 13:50:19 +02:00
event_notifier-posix.c	Remove/replace sysemu/char.h inclusion	2017-06-02 11:33:52 +04:00
event_notifier-win32.c
fifo8.c
getauxval.c
hbitmap.c	hbitmap: add next_zero function	2017-12-18 10:54:13 -05:00
hexdump.c
host-utils.c
id.c
iohandler.c
iov.c
keyval.c	qapi: Generate FOO_str() macro for QAPI enum FOO	2017-09-04 13:09:13 +02:00
lockcnt.c
log.c
main-loop.c	Convert multi-line fprintf() to warn_report()	2017-09-19 14:09:34 +02:00
Makefile.objs	util: move qemu_real_host_page_size/mask to osdep.h	2017-10-10 09:45:00 -07:00
memfd.c	memfd: fix configure test	2017-12-20 22:29:26 +01:00
mmap-alloc.c	sparc: Make sure we mmap at SHMLBA alignment	2017-12-15 15:26:24 +00:00
module.c
notify.c
osdep.c	osdep: introduce qemu_mprotect_rwx/none	2017-10-24 13:53:42 -07:00
oslib-posix.c	oslib-posix: Use sysctl(2) call to resolve exec_dir on NetBSD	2017-11-02 16:19:34 +00:00
oslib-win32.c	block: rip out all traces of password prompting	2017-07-11 17:44:56 +02:00
pagesize.c	util: move qemu_real_host_page_size/mask to osdep.h	2017-10-10 09:45:00 -07:00
path.c
qdist.c
qemu-config.c	config: qemu_config_parse() return number of config groups	2017-10-09 23:21:52 -03:00
qemu-coroutine-io.c
qemu-coroutine-lock.c	coroutine-lock: add qemu_co_rwlock_downgrade and qemu_co_rwlock_upgrade	2017-07-17 11:28:15 +08:00
qemu-coroutine-sleep.c	coroutine: simplify co_aio_sleep_ns() prototype	2017-12-19 09:25:27 +00:00
qemu-coroutine.c	coroutine: abort if we try to schedule or enter a pending coroutine	2017-11-21 11:58:07 -05:00
qemu-error.c	error: Revert unwanted change of warning messages	2017-07-24 14:16:29 +02:00
qemu-openpty.c
qemu-option.c	option: Drop unused get_param_value(), get_next_param_value()	2017-12-20 09:11:50 +01:00
qemu-progress.c
qemu-sockets.c	sockets: remove obsolete code that updated listen address	2017-12-21 09:22:44 +01:00
qemu-thread-posix.c	qemu-thread: fix races on threads that exit very quickly	2017-12-20 22:29:26 +01:00
qemu-thread-win32.c	qemu-thread: Assert locks are initialized before using	2017-07-04 14:39:28 +02:00
qemu-timer-common.c
qemu-timer.c
qht.c
range.c
rcu.c	rcu: reduce more than 7MB heap memory by malloc_trim()	2017-12-21 09:30:32 +01:00
readline.c
stats64.c	util/stats64: Fix min/max comparisons	2017-11-15 09:34:51 +01:00
systemd.c
thread-pool.c
throttle.c	throttle: Assert that bkt->max is valid in throttle_compute_wait()	2017-09-26 14:46:23 +02:00
timed-average.c
trace-events	docs: fix broken paths to docs/devel/tracing.txt	2017-07-31 13:12:53 +03:00
unicode.c
uri.c
uuid.c