From 81cdbe0509542324ad7d3282ab67c2b6716df663 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 23 Mar 2009 22:29:50 +0100 Subject: [PATCH] perf_counter tools: increase cpu-cycles again Commit b7368fdd7d decreased the CPU cycles interval 100-fold, but this is causig kerneltop failures on my Nehalem box: aldebaran:/home/mingo/linux/linux/Documentation/perf_counter> ./kerneltop KernelTop refresh period: 2 seconds ERROR: failed to keep up with mmap data 10,000 cycles is way too short. What we should do instead on mostly-idle systems is some sort of read/poll timeout, so that we display something every 2 seconds for sure. Cc: Wu Fengguang Cc: Peter Zijlstra Cc: Paul Mackerras Signed-off-by: Ingo Molnar --- Documentation/perf_counter/kerneltop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/perf_counter/kerneltop.c b/Documentation/perf_counter/kerneltop.c index 8f9a303f28d8..2ab29b5e32e8 100644 --- a/Documentation/perf_counter/kerneltop.c +++ b/Documentation/perf_counter/kerneltop.c @@ -212,7 +212,7 @@ struct source_line { const unsigned int default_count[] = { - 10000, + 1000000, 1000000, 10000, 10000, -- 2.39.2