mirror of
https://github.com/git/git.git
synced 2024-05-09 18:26:08 +02:00
8ad575646c
Add stopwatch timer mechanism to Trace2. Timers are an alternative to Trace2 Regions. Regions are useful for measuring the time spent in various computation phases, such as the time to read the index, time to scan for unstaged files, time to scan for untracked files, and etc. However, regions are not appropriate in all places. For example, during a checkout, it would be very inefficient to use regions to measure the total time spent inflating objects from the ODB from across the entire lifetime of the process; a per-unzip() region would flood the output and significantly slow the command; and some form of post-processing would be requried to compute the time spent in unzip(). Timers can be used to measure a series of timer intervals and emit a single summary event (at thread and/or process exit). Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
92 lines
2.5 KiB
Perl
92 lines
2.5 KiB
Perl
#!/usr/bin/perl
|
|
#
|
|
# Scrub the variable fields from the perf trace2 output to
|
|
# make testing easier.
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
my $qpath = '\'[^\']*\'|[^ ]*';
|
|
|
|
my $col_depth=0;
|
|
my $col_thread=1;
|
|
my $col_event=2;
|
|
my $col_repo=3;
|
|
my $col_t_abs=4;
|
|
my $col_t_rel=5;
|
|
my $col_category=6;
|
|
my $col_rest=7;
|
|
|
|
# This code assumes that the trace2 data was written with bare
|
|
# turned on (which omits the "<clock> <file>:<line> | <parents>"
|
|
# prefix.
|
|
|
|
while (<>) {
|
|
my @tokens = split /\|/;
|
|
|
|
foreach my $col (@tokens) { $col =~ s/^\s+|\s+$//g; }
|
|
|
|
if ($tokens[$col_event] =~ m/^start/) {
|
|
# The 'start' message lists the contents of argv in $col_rest.
|
|
# On some platforms (Windows), argv[0] is *sometimes* a canonical
|
|
# absolute path to the EXE rather than the value passed in the
|
|
# shell script. Replace it with a placeholder to simplify our
|
|
# HEREDOC in the test script.
|
|
my $argv0;
|
|
my $argvRest;
|
|
$tokens[$col_rest] =~ s/^($qpath)\W*(.*)/_EXE_ $2/;
|
|
}
|
|
elsif ($tokens[$col_event] =~ m/cmd_path/) {
|
|
# Likewise, the 'cmd_path' message breaks out argv[0].
|
|
#
|
|
# This line is only emitted when RUNTIME_PREFIX is defined,
|
|
# so just omit it for testing purposes.
|
|
# $tokens[$col_rest] = "_EXE_";
|
|
goto SKIP_LINE;
|
|
}
|
|
elsif ($tokens[$col_event] =~ m/cmd_ancestry/) {
|
|
# 'cmd_ancestry' is platform-specific and not implemented everywhere,
|
|
# so skip it.
|
|
goto SKIP_LINE;
|
|
}
|
|
elsif ($tokens[$col_event] =~ m/child_exit/) {
|
|
$tokens[$col_rest] =~ s/ pid:\d* / pid:_PID_ /;
|
|
}
|
|
elsif ($tokens[$col_event] =~ m/data/) {
|
|
if ($tokens[$col_category] =~ m/process/) {
|
|
# 'data' and 'data_json' events containing 'process'
|
|
# category data are assumed to be platform-specific
|
|
# and highly variable. Just omit them.
|
|
goto SKIP_LINE;
|
|
}
|
|
if ($tokens[$col_category] =~ m/fsync/) {
|
|
# fsync events aren't interesting for the test
|
|
goto SKIP_LINE;
|
|
}
|
|
}
|
|
elsif ($tokens[$col_event] =~ m/timer/) {
|
|
# This also captures "th_timer" events
|
|
$tokens[$col_rest] =~ s/ total:\d+\.\d*/ total:_T_TOTAL_/;
|
|
$tokens[$col_rest] =~ s/ min:\d+\.\d*/ min:_T_MIN_/;
|
|
$tokens[$col_rest] =~ s/ max:\d+\.\d*/ max:_T_MAX_/;
|
|
}
|
|
|
|
# t_abs and t_rel are either blank or a float. Replace the float
|
|
# with a constant for matching the HEREDOC in the test script.
|
|
if ($tokens[$col_t_abs] =~ m/\d/) {
|
|
$tokens[$col_t_abs] = "_T_ABS_";
|
|
}
|
|
if ($tokens[$col_t_rel] =~ m/\d/) {
|
|
$tokens[$col_t_rel] = "_T_REL_";
|
|
}
|
|
|
|
my $out;
|
|
|
|
$out = join('|', @tokens);
|
|
print "$out\n";
|
|
|
|
SKIP_LINE:
|
|
}
|
|
|
|
|