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compiler runs. Usage documentation is in the script. The script produces output of the form: $ compare_two_ftime_report_sets "Log0/*perf" "Log3/*perf" Arithmetic sample for timevar log files "Log0/*perf" and selecting lines containing "TOTAL" with desired confidence 95 is trial count is 4, mean is 443.022 (95% confidence in 440.234 to 445.811), std.deviation is 1.75264, std.error is 0.876322 Arithmetic sample for timevar log files "Log3/*perf" and selecting lines containing "TOTAL" with desired confidence 95 is trial count is 4, mean is 441.302 (95% confidence in 436.671 to 445.934), std.deviation is 2.91098, std.error is 1.45549 The first sample appears to be 0.39% larger, with 60% confidence of being larger. To reach 95% confidence, you need roughly 14 trials, assuming the standard deviation is stable, which is iffy. Tested on x86_64 builds. Index: contrib/ChangeLog 2012-11-05 Lawrence Crowl <crowl@google.com> * compare_two_ftime_report_sets: New. From-SVN: r193277
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.