<p dir="ltr">Hi<br>
Any one pls. answer these querry</p>
<div class="gmail_quote">On Feb 1, 2016 2:43 PM, "jayakrishnan mm" <<a href="mailto:jayakrishnan.mm@gmail.com">jayakrishnan.mm@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi,</div><div><br></div><div>I have two server nodes, gluster1 & gluster2 ,running on Ubuntu 14.04, and is using gluster ver 3.7.6 . I am using fio tools ver 2.6 for testing performance.(IO engine= libaio)</div><div><br></div><div><br></div><div><br></div><div><br></div><div><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">gluster1 server node is a high performance CPU
(8 core , i7/3.4GHz) with SSD (random rw performance without
glusterFS is ~14MB/s with ext4 FS, 150 GB ), while </span></p><font color="#000000" face="Times New Roman" size="3">
</font><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">gluster2 is a Pentium g840 CPU (2 core, 2.8GHz) with a WD HDD of
1 TB size.(random rw performance without glusterFS is ~500KB/s only with
ext4).</span></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><br></span></p><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">1. I see gluster1 seq read performance is much higher than gluster 2. See below data(in KB/s).</span><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Is this because gluster1 CPU is better and it is using SSD ?(replica 2)</span></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><font color="#000000" face="Times New Roman" size="3">
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</font><table width="226" style="width:170pt;border-collapse:collapse" border="0" cellspacing="0" cellpadding="0"><colgroup><col width="75" style="width:56pt"><colgroup><col width="87" style="width:66pt"><colgroup><col width="64" style="width:48pt"><tbody><tr height="19" style="height:14.5pt"><td width="75" height="19" style="border:0px black;width:56pt;height:14.5pt;background-color:transparent"></td><td width="87" style="border:0px black;width:66pt;background-color:transparent"><font color="#000000" face="Calibri">Seq. read</font></td><td width="64" style="border:0px black;width:48pt;background-color:transparent"><font color="#000000" face="Calibri">Seq. write</font></td></tr><tr height="22" style="height:16.5pt"><td height="22" style="border:0px black;height:16.5pt;background-color:transparent"><font color="#000000" face="Calibri">gluster1</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">319882</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">83253</font></td></tr><tr height="22" style="height:16.5pt"><td height="22" style="border:0px black;height:16.5pt;background-color:transparent"><font color="#000000" face="Calibri">gluster2</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">135931</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">61059</font></td></tr><tr height="19" style="height:14.5pt"><td height="19" style="border:0px black;height:14.5pt;background-color:transparent"></td><td style="border:0px black;background-color:transparent"></td><td style="border:0px black;background-color:transparent"></td></tr></tbody></colgroup></colgroup></colgroup></table></span><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">2. I also see gluster2 performs well when configured as distributed volumes, compared to gluster1.</span><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"> Why is it so ? Pls see the below data.(in KB/s)</span></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"><font color="#000000" face="Times New Roman" size="3">
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</font><table width="299" style="width:225pt;border-collapse:collapse" border="0" cellspacing="0" cellpadding="0"><colgroup><col width="75" style="width:56pt"><colgroup><col width="87" style="width:66pt"><colgroup><col width="64" style="width:48pt"><colgroup><col width="73" style="width:55pt"><tbody><tr height="19" style="height:14.5pt"><td width="75" height="19" style="border:0px black;width:56pt;height:14.5pt;background-color:transparent"></td><td width="87" style="border:0px black;width:66pt;background-color:transparent"><font color="#000000" face="Calibri">random read</font></td><td width="137" style="border:0px black;width:103pt;background-color:transparent" colspan="2"><font color="#000000" face="Calibri">random write</font></td></tr><tr height="22" style="height:16.5pt"><td height="22" style="border:0px black;height:16.5pt;background-color:transparent"><font color="#000000" face="Calibri">gluster1</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">1029</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">1027</font></td><td style="border:0px black;background-color:transparent"></td></tr><tr height="22" style="height:16.5pt"><td height="22" style="border:0px black;height:16.5pt;background-color:transparent"><font color="#000000" face="Calibri">gluster2</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">3358</font></td><td align="right" style="border:0px rgb(68,68,68);background-color:transparent"><font color="#444444" face="Times New Roman" size="4">3353</font></td><td style="border:0px black;background-color:transparent"></td></tr></tbody></colgroup></colgroup></colgroup></colgroup></table></span><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Expecting experts' answer.</span></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt"></span><br></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">Best Regards,</span></p><p style="margin:0in 0in 0pt"><span style="color:rgb(31,73,125);font-family:"Calibri","sans-serif";font-size:11pt">JK</span></p></span><p style="margin:0in 0in 0pt"><br></p><font color="#000000" face="Times New Roman" size="3">
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