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</o:shapelayout></xml><![endif]--></head><body lang=TR link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have an 2 nodes with 20 bricks in total (10+10).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>First test: <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2 Nodes with Distributed – Striped – Replicated (2 x 2)<o:p></o:p></p><p class=MsoNormal>10GbE Speed between nodes<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>“dd” performance: 400mb/s and higher<o:p></o:p></p><p class=MsoNormal>Downloading a large file from internet and directly to the gluster: 250-300mb/s<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now same test without Stripe but with sharding. This results are same when I set shard size 4MB or 32MB. (Again 2x Replica here)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Dd performance: 70mb/s<o:p></o:p></p><p class=MsoNormal>Download directly to the gluster performance : 60mb/s<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now, If we do this test twice at the same time (two dd or two doewnload at the same time) it goes below 25/mb each or slower.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I thought sharding is at least equal or a little slower (maybe?) but these results are terribly slow.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I tried tuning (cache, window-size etc..). Nothing helps.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>GlusterFS 3.11 and Debian 9 used. Kernel also tuned. Disks are “xfs” and 4TB each.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there any tweak/tuning out there to make it fast?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Or is this an expected behavior? If its, It is unacceptable. So slow. I cannot use this on production as it is terribly slow. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The reason behind I use shard instead of stripe is i would like to eleminate files that bigger than brick size.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>Gencer.<o:p></o:p></p></div></body></html>