Messages in this thread | | | Date | Fri, 20 Sep 2002 13:56:53 -0700 | From | William Lee Irwin III <> | Subject | Re: TPC-C benchmark used standard RH kernel |
| |
On Thu, Sep 19, 2002 at 02:27:22PM -0500, Bond, Andrew wrote: > This isn't as recent as I would like, but it will give you an idea. > Top 75 from readprofile. This run was not using bigpages though. > Andy
> 00000000 total 7872 0.0066 > c0105400 default_idle 1367 21.3594 > c012ea20 find_vma_prev 462 2.2212 > c0142840 create_bounce 378 1.1250 > c0142540 bounce_end_io_read 332 0.9881 > c0197740 __make_request 256 0.1290 > c012af20 zap_page_range 231 0.1739 > c012e9a0 find_vma 214 1.6719 > c012e780 avl_rebalance 160 0.4762
Looks like you're doing a lot of mmapping or faulting requiring VMA lookups, or the number of VMA's associated with a task makes the various VMA manipulations extremely expensive.
Can you dump /proc/pid/maps on some of these processes?
Thanks, Bill - 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/
| |