Messages in this thread Patch in this message | | | Date | Wed, 3 Jun 2009 19:21:31 GMT | From | tip-bot for Ingo Molnar <> | Subject | [tip:perfcounters/core] perf_counter tools: Optimize harder |
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Commit-ID: 095b3a6a030f7d4f24825ae93fc384b3d4b4fafa Gitweb: http://git.kernel.org/tip/095b3a6a030f7d4f24825ae93fc384b3d4b4fafa Author: Ingo Molnar <mingo@elte.hu> AuthorDate: Wed, 3 Jun 2009 20:13:51 +0200 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Wed, 3 Jun 2009 20:15:15 +0200
perf_counter tools: Optimize harder
Use -O6 to build the tools.
Before:
12387507370 instructions # 3121.653 M/sec
After:
6244894971 instructions # 3458.437 M/sec
Almost twice as fast!
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
--- Documentation/perf_counter/Makefile | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/Documentation/perf_counter/Makefile b/Documentation/perf_counter/Makefile index eae8856..005709b 100644 --- a/Documentation/perf_counter/Makefile +++ b/Documentation/perf_counter/Makefile @@ -159,7 +159,7 @@ uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not') # CFLAGS and LDFLAGS are for the users to override from the command line. -CFLAGS = -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement +CFLAGS = -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement -O6 LDFLAGS = -lpthread -lrt -lelf ALL_CFLAGS = $(CFLAGS) ALL_LDFLAGS = $(LDFLAGS)
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