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I just noticed that the o1 scheduler patch was included in the
2.4.9-e.16 enterprise redhat kernel src.rpm for AS 2.1. The QA is
supposed to be more rigorous there. I wonder why it's been included if
there are performance issues? At first glance, I don't see the
ntpl pieces.
On Fri, 2003-04-11 at 13:05, Alex Kramarov wrote:
> 3. you should not use the kernel-source rpm to build your own kernel, you
> should get the kernel.srpm, install it into /usr/src/redhat, and modify the
> spec file to include the ipvs patch. i was able to do that, but adding the
> ipvs patch, and removing O1 (which includes some preemt pieces) and ntpl
> related patches from the spec file (i also removed the lowlat patches,
> although they don't collide with ipvs). these redhat's optimisations are
> good for desktops, but they are affecting lvs director performance as much
> as 25 percent - see the list archives.
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