Messages in this thread | | | Date | Tue, 20 Dec 2005 09:26:24 -0600 | From | "K.R. Foley" <> | Subject | Re: 2.6.15-rc5-rt2 slowness |
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Ingo Molnar wrote: > * Steven Rostedt <rostedt@goodmis.org> wrote: > >>>> Now, is the solution to bring the SLOB up to par with the SLAB, or to >>>> make the SLAB as close to possible to the mainline (why remove NUMA?) >>>> and keep it for PREEMPT_RT? >>>> >>>> Below is the port of the slab changes if anyone else would like to see >>>> if this speeds things up for them. >>> ok, i've added this back in - but we really need a cleaner port of SLAB >>> ... >>> >> Actually, how much do you want that SLOB code? For the last couple of >> days I've been working on different approaches that can speed it up. >> Right now I have one that takes advantage of the different caches. >> But unfortunately, I'm dealing with a bad pointer some where that >> keeps making it bug. Argh! > > well, the SLOB is mainly about being simple and small. So as long as > those speedups are SMP-only, they ought to be fine. The problems are > mainly SMP related, correct? > > Ingo
No. I experienced horrible performance running the original patch with the SLOB on my uniprocessor system vs. the patch with Steven's SLAB patch applied on the same system. In fact I am currently running the latter on that system now. With the original patch the system is really unusable.
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