<div dir="ltr">Thanks Patrick. That's interesting. However, the exact motivation why IO500 has the 'find' command is this same intended use case; stale results therefore actually present an interesting dilemma to IO500. They are not POSIX compliant but that loss of compliance shouldn't necessarily disqualify this result...</div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 18, 2018 at 12:49 AM, Patrick Farrell <span dir="ltr"><<a href="mailto:paf@cray.com" target="_blank">paf@cray.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
Lazy SoM is not landed yet, and it won\u2019t be improving benchmark scores - it\u2019s never \u201cknown 100% correct\u201d, so it can\u2019t be used for actual POSIX ops - if a file size read out is used for a write offset, then you\u2019ve got data corruption.<br>
<br>
So for now it\u2019s strictly limited to tools that know about it (accessed via an ioctl) and can accept information that may be stale. The intended use case is scanning the FS for policy application.<br>
<br>
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<div id="m_1132425410844018439divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> John Bent <<a href="mailto:johnbent@gmail.com" target="_blank">johnbent@gmail.com</a>><br>
<b>Sent:</b> Tuesday, July 17, 2018 10:55:24 PM<br>
<b>To:</b> Patrick Farrell<br>
<b>Cc:</b> Abe Asraoui; <a href="mailto:lustre-devel@lists.lustre.org" target="_blank">lustre-devel@lists.lustre.org</a>; <a href="mailto:lustre-discuss@lists.lustre.org" target="_blank">lustre-discuss@lists.lustre.<wbr>org</a><br>
<b>Subject:</b> Re: [lustre-devel] MDT test in rel2.11</font>
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<div dir="ltr">I'm curious about how DOM improves IO500 scores. :)
<div>Also LSOM but I don't know actually whether that's in 2.11 or where.</div>
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<div class="m_1132425410844018439x_gmail_extra"><br>
<div class="m_1132425410844018439x_gmail_quote">On Tue, Jul 17, 2018 at 11:33 PM, Patrick Farrell <span dir="ltr">
<<a href="mailto:paf@cray.com" target="_blank">paf@cray.com</a>></span> wrote:<br>
<blockquote class="m_1132425410844018439x_gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br>
Abe,<br>
<br>
Any benchmarking would be highly dependent on hardware, both client and server. Is there a particular comparison (say, between versions) you\u2019re interested in or something you\u2019re concerned about?<br>
<br>
- Patrick<br>
<br>
<hr style="display:inline-block;width:98%">
<div id="m_1132425410844018439x_m_7805051326561734487divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> lustre-devel <<a href="mailto:lustre-devel-bounces@lists.lustre.org" target="_blank">lustre-devel-bounces@lists.lu<wbr>stre.org</a>>
on behalf of Abe Asraoui <<a href="mailto:AbeA@supermicro.com" target="_blank">AbeA@supermicro.com</a>><br>
<b>Sent:</b> Tuesday, July 17, 2018 9:23:10 PM<br>
<b>To:</b> <a href="mailto:lustre-devel@lists.lustre.org" target="_blank">lustre-devel@lists.lustre.org</a>;
<a href="mailto:lustre-discuss@lists.lustre.org" target="_blank">lustre-discuss@lists.lustre.or<wbr>g</a>; Abe Asraoui<br>
<b>Subject:</b> [lustre-devel] MDT test in rel2.11</font>
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<div class="m_1132425410844018439x_m_7805051326561734487PlainText">Hi All,<br>
<br>
<br>
Has anyone done any MDT testing under the latest rel2.11 and have benchmark data to share?<br>
<br>
<br>
Thanks,<br>
Abe<br>
<br>
<br>
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