<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 21, 2016 at 7:31 PM, Cristian Del Carlo <span dir="ltr"><<a href="mailto:cristian.delcarlo@targetsolutions.it" target="_blank">cristian.delcarlo@targetsolutions.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div><div>Hi list,<br><br></div>i have installed sheepdog on two server with Centos 7.2.<br><br></div>The servers were purchased with SATA disks and configured with software raid.<br></div>I use sheepdog version 1.0_41_gb5a7613.<br></div><br>Sheepdog is running with this settings:<br>/usr/sbin/sheep --pidfile /var/run/sheep.pid --cluster corosync --log dst=syslog --upgrade /var/lib/sheepdog<br><br></div>I use XFS for /var/lib/sheepdog.<br># xfs_info /var/lib/sheepdog/<br>meta-data=/dev/md3 <wbr> isize=256 agcount=4, agsize=116708356 blks<br> = sectsz=512 attr=2, projid32bit=1<br> = crc=0 finobt=0<br>data = bsize=4096 blocks=466833424, imaxpct=5<br> = sunit=0 swidth=0 blks<br>naming =version 2 bsize=4096 ascii-ci=0 ftype=0<br>log =internal bsize=4096 blocks=227946, version=2<br> = sectsz=512 sunit=0 blks, lazy-count=1<br>realtime =none extsz=4096 blocks=0, rtextents=0<br><br><br></div>With kvm configured with "writeback" i have a vm with a performance of about 100 MB/s:<br>dd if=/dev/zero of=/tmp/test.img bs=8k count=256k <br><br></div>In your opinion what would be the best configuration to use to increase disk performance of vm with sheepdog 1.0?<br></div></blockquote><div><br></div><div>I'm not sure about your performance goal but if you can allow potential data loss, passing -n to sheep will increase write performance because it reduces synchronous disk write.</div><div><br></div><div>Thanks,</div><div>Hitoshi</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div><div><br></div><div>Best regards,<br><br></div><div>-- <br><div><div dir="ltr"><div><span></span><span></span><br></div><div><font><b><font color="#990000"><i><br></i></font></b></font></div><div><font><b><font color="#990000"><i>Cristian Del Carlo</i></font></b><br></font></div><div></div><div><i><font>Target Solutions s.r.l.<br></font></i></div><div><i><font><br></font></i></div>
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