project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Backport jeprof --collapse for flamegraph generation

Browse Source
This commit is contained in:
Igor Wiedler 2020-11-19 16:50:09 +01:00 committed by David Goldblatt
parent 520b75fa2d
commit 99c2d6c232
1 changed files with 52 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
bin/jeprof.in
View File

@ -205,6 +205,8 @@ Output type:
--svg Generate SVG to stdout --svg Generate SVG to stdout
--gif Generate GIF to stdout --gif Generate GIF to stdout
--raw Generate symbolized jeprof data (useful with remote fetch) --raw Generate symbolized jeprof data (useful with remote fetch)
--collapsed Generate collapsed stacks for building flame graphs
(see http://www.brendangregg.com/flamegraphs.html)
Heap-Profile Options: Heap-Profile Options:
--inuse_space Display in-use (mega)bytes [default] --inuse_space Display in-use (mega)bytes [default]
@ -332,6 +334,7 @@ sub Init() {
$main::opt_gif = 0; $main::opt_gif = 0;
$main::opt_svg = 0; $main::opt_svg = 0;
$main::opt_raw = 0; $main::opt_raw = 0;
$main::opt_collapsed = 0;
$main::opt_nodecount = 80; $main::opt_nodecount = 80;
$main::opt_nodefraction = 0.005; $main::opt_nodefraction = 0.005;
@ -405,6 +408,7 @@ sub Init() {
"svg!" => \$main::opt_svg, "svg!" => \$main::opt_svg,
"gif!" => \$main::opt_gif, "gif!" => \$main::opt_gif,
"raw!" => \$main::opt_raw, "raw!" => \$main::opt_raw,
"collapsed!" => \$main::opt_collapsed,
"interactive!" => \$main::opt_interactive, "interactive!" => \$main::opt_interactive,
"nodecount=i" => \$main::opt_nodecount, "nodecount=i" => \$main::opt_nodecount,
"nodefraction=f" => \$main::opt_nodefraction, "nodefraction=f" => \$main::opt_nodefraction,
@ -490,6 +494,7 @@ sub Init() {
$main::opt_svg + $main::opt_svg +
$main::opt_gif + $main::opt_gif +
$main::opt_raw + $main::opt_raw +
$main::opt_collapsed +
$main::opt_interactive + $main::opt_interactive +
0; 0;
if ($modes > 1) { if ($modes > 1) {
@ -621,6 +626,8 @@ sub FilterAndPrint {
PrintText($symbols, $flat, $cumulative, -1); PrintText($symbols, $flat, $cumulative, -1);
} elsif ($main::opt_raw) { } elsif ($main::opt_raw) {
PrintSymbolizedProfile($symbols, $profile, $main::prog); PrintSymbolizedProfile($symbols, $profile, $main::prog);
} elsif ($main::opt_collapsed) {
PrintCollapsedStacks($symbols, $profile);
} elsif ($main::opt_callgrind) { } elsif ($main::opt_callgrind) {
PrintCallgrind($calls); PrintCallgrind($calls);
} else { } else {
@ -2810,6 +2817,40 @@ sub IsSecondPcAlwaysTheSame {
return $second_pc; return $second_pc;
} }
sub ExtractSymbolNameInlineStack {
my $symbols = shift;
my $address = shift;
my @stack = ();
if (exists $symbols->{$address}) {
my @localinlinestack = @{$symbols->{$address}};
for (my $i = $#localinlinestack; $i > 0; $i-=3) {
my $file = $localinlinestack[$i-1];
my $fn = $localinlinestack[$i-0];
if ($file eq "?" || $file eq ":0") {
$file = "??:0";
}
if ($fn eq '??') {
# If we can't get the symbol name, at least use the file information.
$fn = $file;
}
my $suffix = "[inline]";
if ($i == 2) {
$suffix = "";
}
push (@stack, $fn.$suffix);
}
}
else {
# If we can't get a symbol name, at least fill in the address.
push (@stack, $address);
}
return @stack;
}
sub ExtractSymbolLocation { sub ExtractSymbolLocation {
my $symbols = shift; my $symbols = shift;
my $address = shift; my $address = shift;
@ -2884,6 +2925,17 @@ sub FilterFrames {
return $result; return $result;
} }
sub PrintCollapsedStacks {
my $symbols = shift;
my $profile = shift;
while (my ($stack_trace, $count) = each %$profile) {
my @address = split(/\n/, $stack_trace);
my @names = reverse ( map { ExtractSymbolNameInlineStack($symbols, $_) } @address );
printf("%s %d\n", join(";", @names), $count);
}
}
sub RemoveUninterestingFrames { sub RemoveUninterestingFrames {
my $symbols = shift; my $symbols = shift;
my $profile = shift; my $profile = shift;