I just wanted to report back. I'm now running 1.4pre5 on this set of AFRed servers it seems since the installation it's doing a LOT less chatter. I haven't done any thorough testing but the quick tests I did seems to indicate this situation is much improved. I'll report back if I find this not to be the case with 1.4 Keith At 09:29 PM 9/7/2008, Raghavendra G wrote: >Hi Keith, > >Comments are inlined. > >On Mon, Sep 8, 2008 at 3:11 AM, Keith Freedman ><<mailto:freedman at freeformit.com>freedman at freeformit.com> wrote: >I have an application which stores old copies of files whenever new >ones are uploaded. > >it does this by checking if file_exists in the archive folder >this has roughly 30000 items in it. > > >How are you checking whether a file exists or not? do you use ls? >Can you make sure, that ls doesn't send a stat call on each of the >files in the directory (as in ls -l )? if ls just sends readdir >calls and still the performance is low, let us know about it. > >If you need stat calls, you might need stat-prefetch, which is >currently not funcitonal. > > > >I've got an AFR configuration. > >so, when someone uploads 10 files, it checks for the file existing, >which does a directory scan which causes afr to check the other >server, however this takes a reallllly long time. >and it does this for each file, which is a problem. > >which performance translator would help the most with this. > >the AFR configuration uses local read-volume. > >will any performance translators help given it's an AFR config? I >understand afr wants to maintain the directory integrity, but it's >kind of irritating. > >the directory filesize is 2.2 mb so I'm not sure if it's actually >moving this volume of data constantly or not, but it's painfully slow >and things seem to timeout constantly. > >any thoughts are appreciated. > >Keith > > >_______________________________________________ >Gluster-users mailing list ><mailto:Gluster-users at gluster.org>Gluster-users at gluster.org >http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users > > > > >-- >Raghavendra G > >A centipede was happy quite, until a toad in fun, >Said, "Prey, which leg comes after which?", >This raised his doubts to such a pitch, >He fell flat into the ditch, >Not knowing how to run. >-Anonymous
