<div dir="ltr">Lroc only needs a StatCache object as it 'compacts' a full open File object (maxFilesToCache) to a StatCache Object when it moves the content to the LROC device. <div>therefore the only thing you really need to increase is maxStatCache on the LROC node, but you still need maxFiles Objects, so leave that untouched and just increas maxStat</div><div><br></div><div>Olaf's comment is important you need to make sure your manager nodes have enough memory to hold tokens for all the objects you want to cache, but if the memory is there and you have enough its well worth spend a lot of memory on it and bump maxStatCache to a high number. i have tested maxStatCache up to 16 million at some point per node, but if nodes with this large amount of inodes crash or you try to shut them down you have some delays , therefore i suggest you stay within a 1 or 2 million per node and see how well it does and also if you get a significant gain. </div><div>i did help Bob to setup some monitoring for it so he can actually get comparable stats, i suggest you setup Zimon and enable the Lroc sensors to have real stats too , so you can see what benefits you get. </div><div><br></div><div>Sven<br><br><div class="gmail_quote"><div dir="ltr">On Tue, Dec 20, 2016 at 8:13 PM Matt Weil <<a href="mailto:mweil@wustl.edu">mweil@wustl.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000" class="gmail_msg">
<p class="gmail_msg">as many as possible and both<br class="gmail_msg">
</p>
<p class="gmail_msg">have maxFilesToCache 128000</p>
<p class="gmail_msg">and maxStatCache 40000</p>
<p class="gmail_msg">do these effect what sits on the LROC as well? Are those to
small? 1million seemed excessive.<br class="gmail_msg">
</p></div><div bgcolor="#FFFFFF" text="#000000" class="gmail_msg">
<br class="gmail_msg">
<div class="m_-1449668302988743008moz-cite-prefix gmail_msg">On 12/20/16 11:03 AM, Sven Oehme wrote:<br class="gmail_msg">
</div>
<blockquote type="cite" class="gmail_msg">
<div dir="ltr" class="gmail_msg">how much files do you want to cache ?
<div class="gmail_msg">and do you only want to cache metadata or also data
associated to the files ?</div>
<div class="gmail_msg"><br class="gmail_msg">
</div>
<div class="gmail_msg">sven</div>
<div class="gmail_msg"><br class="gmail_msg">
<div class="gmail_msg"><br class="gmail_msg">
</div>
</div>
</div>
<br class="gmail_msg">
<div class="gmail_quote gmail_msg">
<div dir="ltr" class="gmail_msg">On Tue, Dec 20, 2016 at 5:35 PM Matt Weil <<a href="mailto:mweil@wustl.edu" class="gmail_msg" target="_blank">mweil@wustl.edu</a>>
wrote:<br class="gmail_msg">
</div>
<blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><a href="https://www.ibm.com/developerworks/community/wikis/home?lang=en#%21/wiki/General%20Parallel%20File%20System%20%28GPFS%29/page/Flash%20Storage" rel="noreferrer" class="gmail_msg" target="_blank">https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/General%20Parallel%20File%20System%20(GPFS)/page/Flash%20Storage</a><br class="gmail_msg">
<br class="gmail_msg">
Hello all,<br class="gmail_msg">
<br class="gmail_msg">
Are there any tuning recommendations to get these to cache
more metadata?<br class="gmail_msg">
<br class="gmail_msg">
Thanks<br class="gmail_msg">
<br class="gmail_msg">
Matt<br class="gmail_msg">
<br class="gmail_msg">
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