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| author | Christoph Lameter <clameter@sgi.com> | 2007-05-09 02:35:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:56 -0700 |
| commit | 77461ab33229d48614402decfb1b2eaa6d446861 (patch) | |
| tree | d2675ff079e887645ed25ae5f793aa907d53c66a /mm/vmstat.c | |
| parent | d1187ed21026fd512b87851d0ca26d9ae16f9059 (diff) | |
| download | lwn-77461ab33229d48614402decfb1b2eaa6d446861.tar.gz lwn-77461ab33229d48614402decfb1b2eaa6d446861.zip | |
Make vm statistics update interval configurable
Make it configurable. Code in mm makes the vm statistics intervals
independent from the cache reaper use that opportunity to make it
configurable.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmstat.c')
| -rw-r--r-- | mm/vmstat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 9d824643a22f..006eb7621869 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -641,11 +641,13 @@ const struct seq_operations vmstat_op = { #ifdef CONFIG_SMP static DEFINE_PER_CPU(struct delayed_work, vmstat_work); +int sysctl_stat_interval __read_mostly = HZ; static void vmstat_update(struct work_struct *w) { refresh_cpu_vm_stats(smp_processor_id()); - schedule_delayed_work(&__get_cpu_var(vmstat_work), HZ); + schedule_delayed_work(&__get_cpu_var(vmstat_work), + sysctl_stat_interval); } static void __devinit start_cpu_timer(int cpu) |