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<p>Hi,</p>
<p>Stats - vdb is the data disk.</p>
<p>I think this looks ok - 67% idle and 3% iowait...</p>
<p>Ian</p>
<p><br /></p>
<div><span>root@sflow:~# iostat --dec=0 -y vda vdb</span></div>
<div><span>Linux 5.10.0-23-amd64 (sflow.lonap.net) 24/06/23 _x86_64_ (4 CPU)</span></div>
<div><span> </span></div>
<div><span>avg-cpu: %user %nice %system %iowait %steal %idle</span></div>
<div><span> 14 0 16 3 0 67</span></div>
<div><span> </span></div>
<div><span>Device tps kB_read/s kB_wrtn/s kB_dscd/s kB_read kB_wrtn kB_dscd</span></div>
<div><span>vda 2 34 25 0 3960421 2915740 0</span></div>
<div><span>vdb 5866 14013 16371 0 1654383830 1932780751 0</span></div>
<div><span> </span></div>
<div><span> </span></div>
<div><span>root@sflow:~# hdparm -t /dev/vdb</span></div>
<div><span> </span></div>
<div><span>/dev/vdb:</span></div>
<div><span> Timing buffered disk reads: 2788 MB in 3.00 seconds = 928.81 MB/sec</span></div>
<p><br /></p>
<p id="reply-intro">On 2023-06-24 11:24, Nick Hilliard (INEX) wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0">
<div id="replybody1">
<div>for reference, inex's cache flushes take ~2-3 seconds. It may be happening that you're i/o bound on your RRD spool disk. If you have cache flushes which take longer to run than the flush timeout, for sure this would cause problems. What's the i/o load looking like on the disk? Assuming your partition is /dev/sda$something, e.g.<br /># iostat --dec=0 -y sda 1 | grep --line-buffered sda<br />The first column will give TPS with 1s granularity.</div>
</div>
</blockquote>
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