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This is an automatically generated e-mail. To reply, visit:
http://reviews.gem5.org/r/1409/
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(Updated Sept. 11, 2012, 3:12 a.m.)
Review request for Default.
Changes
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Added some profiling output to exemplify the functionality.
Description (updated)
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Changeset 9213:2c3700a56b60
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scons: Add a target for google-perftools profiling
This patch adds a new target called 'perf' that facilitates profiling
using google perftools rather than gprof. The perftools CPU profiler
offers plenty useful information in addition to gprof, and the latter
is kept mostly to offer profiling also on non-Linux hosts.
A small update, after running twolf on ARM with the CPU profiler the
output starts with:
Total: 96679 samples
2437 2.5% 2.5% 2561 2.6% TimeBuffer::access (inline)
2266 2.3% 4.9% 2501 2.6% TimeBuffer::advance
2263 2.3% 7.2% 2594 2.7% RefCounted::decref (inline)
2252 2.3% 9.5% 2252 2.3% Stats::StatStor::inc (inline)
2099 2.2% 11.7% 4711 4.9% RefCountingPtr::del (inline)
2087 2.2% 13.9% 2087 2.2% SLL_Pop
1858 1.9% 15.8% 2327 2.4% RefCountingPtr::copy (inline)
1468 1.5% 17.3% 1468 1.5% tc_new
1438 1.5% 18.8% 1438 1.5% tc_delete
For this specific benchmark, the O3 CPU accounts for roughly 85% before
the first memory system function shows up. No free lunch...
Diffs
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src/SConscript 09d63f1e3559
Diff: http://reviews.gem5.org/r/1409/diff/
Testing
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Compiled and ran a few experiments using the perf binary
Thanks,
Andreas Hansson
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