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Bug #9629 » trace-gc-standalone.sh

benweint (Ben Weintraub), 03/13/2014 12:31 AM

 
#!/bin/bash

PID=$1

cat > /tmp/dtracetmp.$$ <<EOF
#!/usr/sbin/dtrace -s

#pragma D option bufsize=16m
#pragma D option dynvarsize=16m
#pragma D option cleanrate=50Hz

BEGIN {
printf("Ready! (Go press enter on the original script.)\n");
}

ruby${PID}:::gc-mark-begin {
self->mark_begin = timestamp;
}

ruby${PID}:::gc-mark-end /self->mark_begin/ {
elapsed = timestamp - self->mark_begin;
@mark_total = sum(elapsed);
@total = sum(elapsed);
self->mark_begin = 0;
}

ruby${PID}:::gc-sweep-begin {
self->sweep_begin = timestamp;
}

ruby${PID}:::gc-sweep-end /self->sweep_begin/ {
elapsed = timestamp - self->sweep_begin;
@sweep_total = sum(elapsed);
@total = sum(elapsed);
self->sweep_begin = 0;
}

END {
normalize(@mark_total, 1000000);
normalize(@sweep_total, 1000000);
normalize(@total, 1000000);
printa("Mark total: %@d ms\n", @mark_total);
printa("Sweep total: %@d ms\n", @sweep_total);
printa("Mark + sweep total: %@d ms\n", @total)
}

EOF

dtrace -q -s /tmp/dtracetmp.$$ -p $PID
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