Messages in this thread | | | Date | Wed, 13 Sep 2006 09:15:12 +0200 | From | Jakob Oestergaard <> | Subject | Re: [PATCH 00/19] Hardware Accelerated MD RAID5: Introduction |
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On Mon, Sep 11, 2006 at 04:00:32PM -0700, Dan Williams wrote: > Neil, > ... > > Concerning the context switching performance concerns raised at the > previous release, I have observed the following. For the hardware > accelerated case it appears that performance is always better with the > work queue than without since it allows multiple stripes to be operated > on simultaneously. I expect the same for an SMP platform, but so far my > testing has been limited to IOPs. For a single-processor > non-accelerated configuration I have not observed performance > degradation with work queue support enabled, but in the Kconfig option > help text I recommend disabling it (CONFIG_MD_RAID456_WORKQUEUE).
Out of curiosity; how does accelerated compare to non-accelerated?
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/ jakob
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