Messages in this thread | | | Date | Sun, 23 May 2004 18:04:55 -0700 | From | William Lee Irwin III <> | Subject | Re: Help understanding slow down |
| |
On Sun, May 23, 2004 at 05:57:51PM -0700, Phy Prabab wrote: > Just for more clarification, here is a perfect > example: > 2.6.7-p1: > 24.86user 51.77system 2:58.87elapsed 42%CPU > (0avgtext+0avgdata 0maxresident)k > 0inputs+0outputs (13major+7591686minor)pagefaults > 0swaps > 2.4.21: > 28.68user 34.98system 1:12.34elapsed 87%CPU > (0avgtext+0avgdata 0maxresident)k > 0inputs+0outputs (5691267major+1130523minor)pagefaults > 0swaps
Thanks. This reveals that the performance regression is system time. Could you please rerun the 2.6.7-rc1 test with kernel profiling on, and reset the profile buffer prior just prior to the run?
This is the kernel command line option profile=1, and then as root, echo 1 > /proc/profile just prior to the run.
-- wli - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |