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<div>What range of record sizes did you use for IOR? This is more important than file size. </div>
<div>100MB is small, overall data size (# of files) shall be twice as memory.</div>
<div>I ran series of test for small record size for raidz2 10+2; will re-run some tests after upgrading to 0.6.4.1 .</div>
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<div>Single file performance differs substantially from file per process.</div>
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<div>Alex.</div>
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<div>On Apr 29, 2015, at 9:38 AM, Scott Nolin <<a href="mailto:scott.nolin@ssec.wisc.edu">scott.nolin@ssec.wisc.edu</a>> wrote:</div>
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<blockquote type="cite"><span style="font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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; float: none; display: inline !important;">I
used IOR, singlefile, 100MB files. That's the most important workload for us. I tried several different file sizes, but 100MB seemed a reasonable compromise for what I see the most. We rarely or never do file striping.</span><br style="font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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;">
<br style="font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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;">
<span style="font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 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; float: none; display: inline !important;">I
remember I did see a difference between 10+2 and 8+2. Especially at smaller numbers of clients and threads, the 8+2 performance numbers were more consistent, made a smoother curve. 10+2 with not a lot of threads the performance was more variable.</span></blockquote>
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