Hi, As discussed with Zooko on IRC: For people who are sharing a server on Pubgrid, please do not change your Tahoe-LAFS version until ticket 1170 [1] is done. Because of performance tests
@+ Fred [1] http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1170 2010/8/13 Wayne Scott <[email protected]> > Does it matter what version the machine in the cluster are running? > > -Wayne > > > On Fri, Aug 13, 2010 at 2:51 PM, Zooko O'Whielacronx <[email protected]>wrote: > >> Folks: >> >> It seems like Tahoe-LAFS v1.8.0c2 downloads this movie file: >> >> >> http://127.0.0.1:3456/file/URI%3ACHK%3A4klgnafrwsm2nx3bqy24ygac5a%3Acrz7nhthi4bevzrug6xwgif2vhiacp7wk2cfmjutoz2ns3w45qza%3A3%3A10%3A1490710513/@@named=/bbb-360p24.i420.lossless.drc.ogg.fixed.ogg%2Bbbb-24fps.flac.via-ffmpeg.ogg >> >> About 1/3 as fast as Tahoe-LAFS v1.7.1 downloads the same file from >> the same grid (the public Test Grid circa today). >> >> We're investigating (see ticket #1170 for our progress) and we might >> delay the final release of Tahoe-LAFS v1.8.0 (previously planned for >> August 15 -- this Sunday). This might turn out to require a patch >> added on top of Tahoe-LAFS v1.8.0c2 to make it so it isn't such a >> significant performance regression in this case. Or it might turn out >> that this is a really peculiar situation which will almost never occur >> for any other user and we'll decide to release v1.8.0c2 as v1.8.0 >> final. >> >> If you care about immutable download performance, please compare >> v1.8.0c2 to v1.7.1 on your network with your files! And report your >> results to this list. Nathan Eisenberg has done so [1], and shown that >> v1.8.0c1 was substantially *faster* than v1.7.1 for his tests. (Note >> that 1.8.0c1 and 1.8.0c2 are identical with regard to immutable file >> download speed.) Earlier Kyle Markley did some benchmarking of v1.7.1 >> [2, 3, 4, 5, 6, 7, 8, 9], but nobody has yet replicated his experiment >> using v1.8.0c2. I have done quite a bit of benchmarking this one >> particular file from my office (SimpleGeo) and home, and my results >> are all on #1170. >> >> Regards, >> >> Zooko >> >> [1] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-August/004930.html >> [2] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004776.html >> [3] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004781.html >> [4] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004782.html >> [5] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004786.html >> [6] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004811.html >> [7] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004808.html >> [8] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-July/004838.html >> [9] http://tahoe-lafs.org/pipermail/tahoe-dev/2010-August/004853.html >> >> http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1170# does new-downloader >> perform badly for certain situations (such as today's Test Grid)? >> _______________________________________________ >> tahoe-dev mailing list >> [email protected] >> http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-dev >> > > > _______________________________________________ > tahoe-dev mailing list > [email protected] > http://tahoe-lafs.org/cgi-bin/mailman/listinfo/tahoe-dev > >
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