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#!/usr/bin/perl
#
# Read a memtrace logfile from stdin and group memory allocations by logical
# code component. The code component is guessed from the callstack, and
# is something like {v8, sqlite, disk cache, skia, etc..}
#
# Usage:
#
# summary.pl
#
# [STDIN] -- The memwatcher.logXXXX file to summarize.
#
sub process_stdin() {
my %leaks = ();
my $total_bytes = 0;
while(<STDIN>) {
my $line = $_;
chomp($line);
my $bytes, $loc;
($bytes, $loc) = ($line =~ m/[ \t]*([0-9]*)[ \t]*[0-9\.%]*[ \t]*(.*)/);
chomp($loc);
while(<STDIN>) {
my $cont = $_;
chomp($cont);
last if $cont =~ m/=====/;
$loc .= "\n" . $cont;
}
my $location_blame = "";
# print "Found: $bytes, $loc\n";
if ($loc =~ m/v8::internal::Snapshot::Deserialize/) {
$location_blame = "v8 Snapshot Deserialize";
} elsif ($loc =~ m/RenderStyle::create/) {
$location_blame = "RenderStyle::create";
} elsif ($loc =~ m/v8::internal::OldSpace::SlowAllocateRaw/) {
$location_blame = "v8 OldSpace";
} elsif ($loc =~ m/sqlite/) {
$location_blame = "sqlite";
} elsif ($loc =~ m/ TransportDIB::Map/) {
$location_blame = "Shared Memory Backing Store";
} elsif ($loc =~ m/imagedecoder/) {
$location_blame = "img decoder";
} elsif ($loc =~ m/SkBitmap/) {
$location_blame = "skia";
} elsif ($loc =~ m/disk_cache/) {
$location_blame = "disk cache";
} elsif ($loc =~ m/skia/) {
$location_blame = "skia";
} elsif ($loc =~ m/:WSA/) {
$location_blame = "net";
} elsif ($loc =~ m/dns/) {
$location_blame = "net";
} elsif ($loc =~ m/trunk\\net/) {
$location_blame = "net";
} elsif ($loc =~ m/WinHttp/) {
$location_blame = "WinHttp";
} elsif ($loc =~ m/:I_Crypt/) {
$location_blame = "WinHttpSSL";
} elsif ($loc =~ m/CryptGetTls/) {
$location_blame = "WinHttpSSL";
} elsif ($loc =~ m/WinVerifyTrust/) {
$location_blame = "WinHttpSSL";
} elsif ($loc =~ m/Cert/) {
$location_blame = "WinHttpSSL";
} elsif ($loc =~ m/plugin/) {
$location_blame = "plugin";
} elsif ($loc =~ m/NP_/) {
$location_blame = "plugin";
} elsif ($loc =~ m/hunspell/) {
$location_blame = "hunspell";
} elsif ($loc =~ m/TextCodec/) {
$location_blame = "fonts";
} elsif ($loc =~ m/glyph/) {
$location_blame = "fonts";
} elsif ($loc =~ m/cssparser/) {
$location_blame = "webkit css";
} elsif ($loc =~ m/::CSS/) {
$location_blame = "webkit css";
} elsif ($loc =~ m/Arena/) {
$location_blame = "webkit arenas";
} elsif ($loc =~ m/WebCore::.*ResourceLoader::addData/) {
$location_blame = "WebCore *ResourceLoader addData";
} elsif ($loc =~ m/OnUpdateVisitedLinks/) {
$location_blame = "OnUpdateVisitedLinks";
} elsif ($loc =~ m/IPC/) {
$location_blame = "ipc";
} elsif ($loc =~ m/trunk\\chrome\\browser/) {
$location_blame = "browser";
} elsif ($loc =~ m/trunk\\chrome\\renderer/) {
$location_blame = "renderer";
} elsif ($loc =~ m/webcore\\html/) {
$location_blame = "webkit webcore html";
} elsif ($loc =~ m/webkit.*string/) {
$location_blame = "webkit strings";
} elsif ($loc =~ m/htmltokenizer/) {
$location_blame = "webkit HTMLTokenizer";
} elsif ($loc =~ m/javascriptcore/) {
$location_blame = "webkit javascriptcore";
} elsif ($loc =~ m/webkit/) {
$location_blame = "webkit other";
} elsif ($loc =~ m/safe_browsing/) {
$location_blame = "safe_browsing";
} elsif ($loc =~ m/VisitedLinkMaster/) {
$location_blame = "VisitedLinkMaster";
} elsif ($loc =~ m/NewDOMUI/) {
$location_blame = "NewDOMUI";
} elsif ($loc =~ m/RegistryControlledDomainService/) {
$location_blame = "RegistryControlledDomainService";
} elsif ($loc =~ m/URLRequestChromeJob::DataAvailable/) {
$location_blame = "URLRequestChromeJob DataAvailable";
} elsif ($loc =~ m/history_publisher/) {
$location_blame = "history publisher";
} else {
$location_blame = "unknown";
}
# Surface large outliers in an "interesting" group.
my $interesting_group = "unknown";
my $interesting_size = 10000000; # Make this smaller as needed.
# TODO(jar): Add this as a pair of shell arguments.
if ($bytes > $interesting_size && $location_blame eq $interesting_group) {
# Create a special group for the exact stack that contributed so much.
$location_blame = $loc;
}
$total_bytes += $bytes;
$leaks{$location_blame} += $bytes;
}
# now dump our hash table
my $sum = 0;
my @keys = sort { $leaks{$b} <=> $leaks{$a} }keys %leaks;
for ($i=0; $i<@keys; $i++) {
my $key = @keys[$i];
printf "%11s\t(%3.2f%%)\t%s\n", comma_print($leaks{$key}), (100* $leaks{$key} / $total_bytes), $key;
$sum += $leaks{$key};
}
printf("TOTAL: %s\n", comma_print($sum));
}
# Insert commas into an integer after each three digits for printing.
sub comma_print {
my $num = "$_[0]";
$num =~ s/(\d{1,3}?)(?=(\d{3})+$)/$1,/g;
return $num;
}
# ----- Main ------------------------------------------------
process_stdin();
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