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authorIngo Molnar2009-06-02 23:02:59 +0200
committerIngo Molnar2009-06-02 23:04:24 +0200
commit3cf165fc2e7f221a7a95098b47eb990779e29f5f (patch)
tree2719492950a0570d3a4f5bd3c3a5c92449665649 /Documentation/perf_counter/builtin-record.c
parentperf record: Add --append option (diff)
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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>
Diffstat (limited to 'Documentation/perf_counter/builtin-record.c')
-rw-r--r--Documentation/perf_counter/builtin-record.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/perf_counter/builtin-record.c b/Documentation/perf_counter/builtin-record.c
index 19cba6b5ee9c..8feb1192e09e 100644
--- a/Documentation/perf_counter/builtin-record.c
+++ b/Documentation/perf_counter/builtin-record.c
@@ -19,9 +19,9 @@ static int default_interval = 100000;
static int event_count[MAX_COUNTERS];
static int fd[MAX_NR_CPUS][MAX_COUNTERS];
-static int nr_cpus = 0;
+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;