<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Thanks Remo, <div class=""><br class=""></div><div class="">Agree’d, ephemeral will pretty much always be faster, I’m seeing orders of magnitude difference between the 2, at times. After a bunch of testing, I’m pretty convinced its not KVM/QEMU or iscsi configurations, it’s looking like its something with my 3par configuration. Initially thought it may just be a function of growing a sparce volume, but running IO tests multiple times, I still get inconsistent results. </div><div class=""><br class=""></div><div class="">Anyway, thanks for the reply.. </div><div class=""><br class=""></div><div class="">JC</div><div class=""><br class=""><div class="">
<div class="" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><font color="#888888" size="2" class=""><br class="Apple-interchange-newline">Jim Colestock</font></div><div class="" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><font color="#888888" size="2" class=""><a href="mailto:jcolestock@gmail.com" class="">jcolestock@gmail.com</a></font></div><div class="" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"></div></div><div><br class=""><blockquote type="cite" class=""><div class="">On Jan 12, 2018, at 11:18 AM, Remo Mattei <<a href="mailto:Remo@italy1.com" class="">Remo@italy1.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I think that ephemeral will always be faster than iscsi. We do use PURE on 10GB even though it’s fast but local is faster. <div class=""><br class=""></div><div class="">Remo <br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">On Jan 12, 2018, at 6:27 AM, Jimmy Colestock <<a href="mailto:jcolestock@gmail.com" class="">jcolestock@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hello All, <div class=""><br class=""></div><div class="">Fighting an issue with cinder iscsi performance being much slow than local ephemeral disk. We’re running multi-path with dual 10Gb nic, offloading is working and bandwidth across the links is minimal. I’ve looked at kernel schedulers in the VM’s and tried them all. </div><div class=""><br class=""></div><div class="">I still need to dig into the storage side (3Par), but just curious if anyone has any suggestions while I keep troubleshooting. </div><div class=""><br class=""></div><div class="">Thanks for any help.</div><div class=""><br class=""></div><div class="">JC<br class=""><div class="">
<div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><font color="#888888" size="2" class=""> </font></div><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><font color="#888888" size="2" class=""><br class="Apple-interchange-newline">Jim Colestock</font></div><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><a href="mailto:jcolestock@gmail.com" class="">jcolestock@gmail.com</a></div><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"></div><div class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><font color="#888888" size="2" class=""><a href="https://www.linkedin.com/in/jcolestock/" class="">https://www.linkedin.com/in/jcolestock/</a></font></div>
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