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Date: Tue, 29 Jul 2008 22:04:16 +0900 From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> To: Rik van Riel <riel@...hat.com> Cc: kosaki.motohiro@...fujitsu.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org, akpm@...ux-foundation.org Subject: Re: PERF: performance tests with the split LRU VM in -mm > TEST 1: dd if=/dev/sda of=/dev/null bs=1M > > kernel speed swap used > > 2.6.26 111MB/s 500kB > -mm 110MB/s 59MB (ouch, system noticably slower) > noforce 111MB/s 128kB > stream 108MB/s 0 (slight regression, not sure why yet) I tried to reproduce it, my ia64 result was kernel speed swap used 2.6.26-rc8 49.8MB/s 1M 2.6.26-rc8-mm1 47.6MB/s 168M -mm with above two patch 50.2MB/s 0 So, I think it isn't regression. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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