changeset eb2975c014cd in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=eb2975c014cd
description:
sim: Add support for tcmalloc if it's installed and available.
This package is available in Ubuntu, Debian, and Redhat as
google-perftools.
With multiple tests on a single machine I've seen a little over 10%
performance
gain with tcmalloc.
diffstat:
SConstruct | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diffs (28 lines):
diff -r 904ddeecc653 -r eb2975c014cd SConstruct
--- a/SConstruct Tue Jun 05 01:23:08 2012 -0400
+++ b/SConstruct Tue Jun 05 01:23:09 2012 -0400
@@ -749,6 +749,14 @@
conf.CheckLibWithHeader('rt', 'time.h', 'C',
'clock_nanosleep(0,0,NULL,NULL);')
+if conf.CheckLib('tcmalloc_minimal'):
+ have_tcmalloc = True
+else:
+ have_tcmalloc = False
+ print termcap.Yellow + termcap.Bold + \
+ "You can get a 12% performance improvement by installing tcmalloc "\
+ "(google-perftools package on Ubuntu or RedHat)." + termcap.Normal
+
if not have_posix_clock:
print "Can't find library for POSIX clocks."
@@ -1011,6 +1019,9 @@
if env['USE_SSE2']:
env.Append(CCFLAGS=['-msse2'])
+ if have_tcmalloc:
+ env.Append(LIBS=['tcmalloc_minimal'])
+
# The src/SConscript file sets up the build rules in 'env' according
# to the configured variables. It returns a list of environments,
# one for each variant build (debug, opt, etc.)
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