Messages in this thread | | | Date | Thu, 24 Jun 2004 07:30:00 -0700 | From | William Lee Irwin III <> | Subject | Re: finish_task_switch high in profiles in 2.6.7 |
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On Thu, Jun 24, 2004 at 05:34:40PM +0800, Yusuf Goolamabbas wrote: > Yes, It's an SMP (Dual P3-800). Workload is a busy mailserver (get lots > of SMTP traffic, validate users against a remote database, reject a > truckload of connections). CONFIG_4K_STACKS=y on the 2.6.7 box, e100 > driver with NAPI turned off. No threads > The 2.6.7 box shows this wrt context swithes > procs memory swap io system cpu > r b swpd free buff cache si so bi bo in cs us sy wa id > 19 0 0 66516 63020 78148 0 0 0 1252 6100 14653 31 69 0 0 > 22 0 0 65300 63016 78084 0 0 0 0 5989 16043 34 66 0 1 > 29 1 0 67620 63024 78212 0 0 0 992 6314 14747 31 69 0 0 > The 2.6.5 box shows this > procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu---- > r b swpd free buff cache si so bi bo in cs us sy id wa > 34 0 0 135928 38160 189028 0 0 0 2160 5923 22532 32 68 0 0 > 166 0 0 137752 38148 188836 0 0 0 2424 5973 21695 30 70 0 0 > 229 0 0 135060 38272 189732 0 0 0 2340 6416 23697 33 67 0 0 32 0 0 134100 38288 189852 0 0 0 3068 6342 24016 33 67 0 0
This doesn't look like very intense context switching in either case. 2.6.7 appears to be doing less context switching. I don't see a significant difference in system time, either.
Could you please send me complete profiles?
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