Commit 3cf165fc authored Jun 02, 2009 by Ingo Molnar

perf record: Increase mmap buffering default



I've run into mmap overruns with the current 16 pages default,
increase it to 128 pages.

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>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent abaff32a

Documentation/perf_counter/builtin-record.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -21,7 +21,7 @@ static int event_count[MAX_COUNTERS];
		static int fd[MAX_NR_CPUS][MAX_COUNTERS];
		static int nr_cpus = 0;
		static unsigned int page_size;
		static unsigned int mmap_pages = 16;
		static unsigned int mmap_pages = 128;
		static int output;
		static const char *output_name = "perf.data";
		static int group = 0;