(6/1/12 8:24 AM), Anton Vorontsov wrote: > This function forcibly flushes per-cpu vmstat diff counters to the > global counters. > > Note that we don't try to flush percpu pagesets, the pcp will be > still flushed once per 3 seconds. > > Signed-off-by: Anton Vorontsov<anton.vorontsov@xxxxxxxxxx> No. This is insane. Your patch improved vmevent accuracy a _bit_. But instead of, decrease a performance of large systems. That's no good deal. 99% user never uses vmevent. MOREOVER, this patch don't solve vmevent accuracy issue AT ALL. because of, a second is enough big to make large inaccuracy. Modern cpus are fast. Guys, the fact is, user land monitor can't use implicit batch likes vmstat. That's a reason why perf don't use vmstat. I suggest you see perf APIs. It may bring you good inspiration. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>