Re: finish_task_switch high in profiles in 2.6.7

[William Lee Irwin III <wli@holomorphy.com>]

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