From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Pratt Subject: Re: Updated performance results Date: Wed, 23 Sep 2009 10:24:42 -0500 Message-ID: <4ABA3DBA.6000607@austin.ibm.com> References: <4AAAC2B6.8040105@austin.ibm.com> <20090914135130.GE8839@think> <4AAEB89C.3040100@austin.ibm.com> <20090916005225.GG23965@think> <4AB280AD.5080306@hp.com> <4AB28245.2000704@austin.ibm.com> <20090917185220.GA18165@think> <20090917201714.GE18165@think> <20090917204331.GG18165@think> <4AB2B25B.5070706@austin.ibm.com> <20090918201409.GF21798@think> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed To: Chris Mason , Eric Whitney , linux-btrfs Return-path: In-Reply-To: <20090918201409.GF21798@think> List-ID: Chris Mason wrote: > On Thu, Sep 17, 2009 at 05:04:11PM -0500, Steven Pratt wrote: > >> Chris Mason wrote: >> >>> On Thu, Sep 17, 2009 at 04:17:14PM -0400, Chris Mason wrote: >>> >>>> [ crashes on runs involving unmounts ] >>>> >>>> The run is still going here, but it has survived longer than before. >>>> I'm trying with Yan Zheng's patch: >>>> >>>> From: Yan Zheng >>>> Date: Fri, 11 Sep 2009 16:11:19 -0400 >>>> Subject: [PATCH] Btrfs: improve async block group caching >>>> >>> Quick update, I got through a full run of Steve's test with this >>> applied. I'll start a few more ;) >>> >> Seems to work for me too! Got through all the random write tests >> with no problems. Will kick off full run overnight. >> > > Thanks again. > > I've updated the btrfs-unstable tree to include Yan Zheng's fix. I've > also included two more buffered writeback speedups, and I expect these > to make a difference on the multi-threaded tests. > > I took a look at 1MB O_DIRECT writes, and the latencies of sending off > checksumming to the checksum threads seem to be the biggest problem. I > get full tput at 8MB O_DIRECT writes, so for now I'm going to leave this > one alone. > Updated performance results are available. Ran both the 9/16 tree + async patches and the tree from 9/18. Results are a mixed bag, some faster some slower. http://btrfs.boxacle.net/repository/raid/history/History.html Steve > -chris > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >