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

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

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