Re: [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP_RR

[Tejun Heo]

Hello,

On 07/14/2010 04:01 AM, Christoph Lameter wrote:
> I dont see anything in there at first glance that would cause slub to
> increase its percpu usage. This is straight upstream?

It's basically checking constant expressions there and
PERCPU_DYNAMIC_EARLY_SIZE is defined as 12k, so slub is thinking that
it's gonna use more memory on that build.

> Try to just comment out the BUILD_BUG_ON. I had it misfire before and
> fixed the formulae to no longer give false positives. Maybe that is
> another case. Tejun wanted that but never was able to give me an exact
> formular to check for.

Yeah, unfortunately, due to alignment requirements, it can't be
determined with accuracy.  We'll just have to size it sufficiently.

> At the Ottawa Linux Symposium right now so responses may be delayed.
> Hotels Internet connection keeps getting clogged for some reason.

I'm in suse labs conf until next week so I don't think I'll be doing
much till then either.

Thanks.

-- 
tejun
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