rusage breakdown and cpu limits.

Poul-Henning Kamp phk at phk.freebsd.dk
Tue May 29 19:04:13 UTC 2007


In message <20070529105856.L661 at 10.0.0.1>, Jeff Roberson writes:

>I'm working with Attilio to break down rusage further to be per-thread in 
>places where it is protected by the global scheduler lock.  To support 
>this, I am interested in moving the rlimit cpulimit check into userret(), 
>or perhaps ast().  Is there any reason why we need to check this on every 
>context switch?  Any objections to moving it?  Eventually it will require 
>a different lock from the one we obtain to call mi_switch().

For all I care, we can do the cpu limit check once per second only.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.


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