Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: INGO Why you remove set_user_nice() from kernel/kthread.c | From | Mike Galbraith <> | Date | Mon, 14 Sep 2009 16:05:40 +0200 |
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If you're asking Ingo a question, maybe a CC is in order.
On Mon, 2009-09-14 at 17:42 +0400, Pavel Vasilyev wrote: > > Next patсh - > http://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2F%2Fv2.6%2Fsnapshots%2Fpatch-2.6.31-git2.bz2;z=548 > > This patch defines the core processes that are working with nice leve equal to > zero , as in the BFS. :) > > Why?
I did that, not Ingo, and did so because with kthreads that use diddly-spit CPU (every one I see), it's just a waste of math. What kthreads are you seeing using so much CPU that their weight is a factor? They _should_ be able to preempt and get their work done just fine without a boost.
> VirtualBox, Vmware, QEMU, Firefox, Azureus, and many subsystems and > applications began working with large timeouts. In appearance similar to > hang.
In any case, if it's causing problems, reverting is easy enough, though better would be to find out the why.
-Mike
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