Re: [uml-user] what are the current limits on how many uml's on one host?

[David L. <da...@la...>]

after things stabilize the results look basicly the same (the exact 
numbers vary slightly, but the top symbols remain the same

should I forward this to linux-kernel as well?

David Lang

On Mon, 27 Mar 2006, David Lang wrote:

> rebooting my system with idle=poll and profile=2 I get the following profile 
> while the UML instances are trying to startup (again a 60 second sleep 
> between start and end, this is somewhat longer then 60 seconds since the 
> machine is so bogged down)
>
> CPU: AMD64 processors, speed 2605.96 MHz (estimated)
> Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit 
> mask of 0x00 (No unit mask) count 100000
> samples  %        symbol name
> 3527977  41.2259  eligible_child
> 2601815  30.4033  do_wait
> 1857112  21.7011  __write_lock_failed
> 47511     0.5552  __sched_text_start
> 38076     0.4449  main_timer_handler
> 28270     0.3303  do_gettimeoffset_pm
>
> readprofile (same 60 sec sleep) results in
>
> sort -rn profile.out |head
> 150120 total                                      0.0353
> 59483 do_wait                                   63.6182
> 50935 eligible_child                           282.9722
> 33870 wait_task_stopped                         54.2788
>  1006 thread_return                              4.6147
>   289 ia32_syscall                               4.2500
>   252 ptrace_stop                                0.6462
>   252 do_notify_parent_cldstop                   0.9000
>   190 schedule                                   0.1203
>
>
> I'll do another run after things finish stabalizing.
>
> David Lang
>
>
>
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