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</o:shapelayout></xml><![endif]--></head><body lang=TR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I want to give an update for this. I also tested READ speed. It seems, sharded volume has a lower read speed than striped volume.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>This machine has 24 cores with 64GB of RAM . I really don’t think its caused due to low system. Stripe is kind of a shard but a fixed size based on stripe value / filesize. Hence, I would expect at least the same speed or maybe little slower. What I get is 5-10x slower.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I play with Gluster’s threads count, performance tweaks, caches and etc. Nothing helped. In fact, the performance tweaks that I apply for stripe makes sharded volume much much more worse. Default values are better on sharded volume.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>-Gencer.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> gencer@gencgiyen.com [mailto:gencer@gencgiyen.com] <br><b>Sent:</b> Saturday, July 1, 2017 9:49 AM<br><b>To:</b> 'Gandalf Corvotempesta' <gandalf.corvotempesta@gmail.com><br><b>Cc:</b> 'Krutika Dhananjay' <kdhananj@redhat.com>; 'gluster-user' <gluster-users@gluster.org><br><b>Subject:</b> RE: [Gluster-users] Very slow performance on Sharded GlusterFS<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I did the changes (one brick from 09th server and one replica from 10th server and continued with this order) and re-test. Nothing changed. Still slow. (exactly same result.)<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>-Gencer.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> Gandalf Corvotempesta [<a href="mailto:gandalf.corvotempesta@gmail.com">mailto:gandalf.corvotempesta@gmail.com</a>] <br><b>Sent:</b> Friday, June 30, 2017 8:19 PM<br><b>To:</b> <a href="mailto:gencer@gencgiyen.com">gencer@gencgiyen.com</a><br><b>Cc:</b> Krutika Dhananjay <<a href="mailto:kdhananj@redhat.com">kdhananj@redhat.com</a>>; gluster-user <<a href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a>><br><b>Subject:</b> Re: [Gluster-users] Very slow performance on Sharded GlusterFS<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><p class=MsoNormal>Il 30 giu 2017 3:51 PM, <<a href="mailto:gencer@gencgiyen.com">gencer@gencgiyen.com</a>> ha scritto:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Note: I also noticed that you said “order”. Do you mean when we create via volume set we have to make an order for bricks? I thought gluster handles (and do the math) itself.<o:p></o:p></p></div></div></blockquote></div></div><div><p class=MsoNormal>Yes, you have to specify the exact order<o:p></o:p></p></div><div><p class=MsoNormal>Gluster is not flexible in this way and doesn't help you at all.<o:p></o:p></p></div></div></div></body></html>