Commit 551cfdc0 authored by simonmarhaskell@gmail.com's avatar simonmarhaskell@gmail.com
Browse files

measure GC(0/1) times and work imbalance

parent 4fbd33e5
......@@ -323,9 +323,9 @@ if ( $SysSpecificTiming eq '' ) {
# print out what we found
print STDERR "<<$SysSpecificTiming: ";
if ( $Cachegrind ne 'yes') {
print STDERR "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), $GCWork bytes GC work, ${TotMem}M in use, $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed)$Counters";
print STDERR "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), $GCWork bytes GC work, ${TotMem}M in use, $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed), $Gc0Time GC(0) ($Gc0Elapsed elapsed), $Gc1Time GC(1) ($Gc1Elapsed elapsed), $Balance balance$Counters";
} else {
print STDERR "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), $GCWork bytes GC work, ${TotMem}M in use, $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed), $TotInstrs instructions, $TotReads memory reads, $TotWrites memory writes, $TotMisses L2 cache misses";
print STDERR "$BytesAlloc bytes, $GCs GCs, $AvgResidency/$MaxResidency avg/max bytes residency ($ResidencySamples samples), $GCWork bytes GC work, ${TotMem}M in use, $InitTime INIT ($InitElapsed elapsed), $MutTime MUT ($MutElapsed elapsed), $GcTime GC ($GcElapsed elapsed), $Gc0Time GC(0) ($Gc0Elapsed elapsed), $Gc1Time GC(1) ($Gc1Elapsed elapsed), $Balance balance, $TotInstrs instructions, $TotReads memory reads, $TotWrites memory writes, $TotMisses L2 cache misses";
};
print STDERR " :$SysSpecificTiming>>\n";
......@@ -389,6 +389,7 @@ sub process_stats_file {
$GCWork = 0;
$GCs = 0;
$Balance = 1;
while (<STATS>) {
if (! /Gen:\s+0/ && /^\s*\d+\s+\d+\s+(\d+)\s+\d+\.\d+/ ) {
$max_live = $1 if $max_live < $1;
......@@ -422,6 +423,19 @@ sub process_stats_file {
$GcTime = $1; $GcElapsed = $2;
}
if (/Generation (\d+):\s*\d+ collections,\s*\d+ parallel,\s*(-*\d+\.\d\d)s\s*,\s*(-*\d+\.\d\d)s elapsed/) {
if ($1 == 0) {
$Gc0Time = $2; $Gc0Elapsed = $3;
} elsif ($1 == 1) {
$Gc1Time = $2; $Gc1Elapsed = $3;
}
}
if (/work balance: ([0-9.]+)/) {
$Balance = $1;
}
if ( /CPU GC counters/ ) {
# Counters that follow correspond to GC
$into_gc_counters = 1;
......@@ -502,6 +516,11 @@ sub process_stats_file {
print STDERR "Warning: GcElapsed not found in stats file\n" unless defined($GcElapsed);
print STDERR "Warning: total memory not found in stats file\n" unless defined($TotMem);
print STDERR "Warning: GC work not found in stats file\n" unless defined($GCWork);
print STDERR "Warning: Gc0Time not found in stats file\n" unless defined($Gc0Time);
print STDERR "Warning: Gc0Elapsed not found in stats file\n" unless defined($Gc0Elapsed);
print STDERR "Warning: Gc1Time not found in stats file\n" unless defined($Gc1Time);
print STDERR "Warning: Gc1Elapsed not found in stats file\n" unless defined($Gc1Elapsed);
print STDERR "Warning: Balance not found in stats file\n" unless defined($Gc1Elapsed);
# things we didn't necessarily expect to find
$MaxResidency = 0 unless defined($MaxResidency);
......
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