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It’s LU-9574.
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<div class="">Jinshan</div>
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<div class="">On May 30, 2017, at 12:24 PM, Jones, Peter A <<a href="mailto:peter.a.jones@intel.com" class="">peter.a.jones@intel.com</a>> wrote:</div>
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<div class="">Darby</div>
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<div class="">Can you please open a JIRA ticket with this information?</div>
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<div class="">Thanks</div>
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<div class="">Peter</div>
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<div class="">On 5/30/17, 12:10 PM, "lustre-discuss on behalf of Vicker, Darby (JSC-EG311)" <<a href="mailto:lustre-discuss-bounces@lists.lustre.org" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">lustre-discuss-bounces@lists.lustre.org</a><span class="Apple-converted-space"> </span>on
behalf of<span class="Apple-converted-space"> </span><a href="mailto:darby.vicker-1@nasa.gov" style="color: rgb(149, 79, 114); text-decoration: underline;" class="">darby.vicker-1@nasa.gov</a>> wrote:</div>
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<span style="font-size: 11pt;" class="">Using the git bisect we were able to isolate the problem to this commit:<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class="">commit d8467ab8a2ca15fbbd5be3429c9cf9ceb0fa78b8<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class=""> LU-7990 clio: revise readahead to support 16MB IO<o:p class=""></o:p></span></div>
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<span style="font-size: 11pt;" class="">In our testing, we can read from a large file (stripe count=4) at near line rate (10 GbE – so 1200 MB/s) using a client compiled with the commit before this one. With this patch, the read rate drops to ~200 MB/s. <span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div>
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mailing list</span><br style="font-family: Calibri, sans-serif; font-size: 14px; 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;" class="">
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