Re: finish_task_switch high in profiles in 2.6.7

William Lee Irwin III
2004-06-24T14:30:18Z

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?

-- wli