From 3cf165fc2e7f221a7a95098b47eb990779e29f5f Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Tue, 2 Jun 2009 23:02:59 +0200 Subject: [PATCH] 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 Cc: Mike Galbraith Cc: Paul Mackerras Cc: Corey Ashford Cc: Marcelo Tosatti Cc: Arnaldo Carvalho de Melo Cc: Thomas Gleixner Cc: John Kacur LKML-Reference: Signed-off-by: Ingo Molnar --- Documentation/perf_counter/builtin-record.c | 4 ++-- 1 file 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; -- GitLab