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</head><body text="#485663"><span>Ian Chilton wrote on 24/06/2023 16:27:</span><br>
<blockquote type="cite"
cite="mid:6f4f8888f3d0830f3ec347445d43ff27@lonap.net" style="font-size:
10pt; font-family: Verdana,Geneva,sans-serif">
<div><span>vdb 5866 14013 16371
0 1654383830 1932780751 0</span></div>
</blockquote>
<br>
5866 looks fairly high for the average tps since boot, but you need more
granular output than this. You can get a time series sample of the 1s
tps using e.g.<br>
<br>
# iostat --dec=0 <span style="display: inline; font-size: inherit;
padding: 0px;" class="__postbox-detected-content
__postbox-detected-date"
__postbox-detected-content="__postbox-detected-date">-y</span> vdb 1 |
grep --line-buffered vdb<br>
<br>
I'd check out several hours of this - maybe throw it into a graph and
see what's going on.<br>
<br>
Presumably the partition is mounted with performance tuning options,
e.g. "<span class="lang:default decode:true crayon-inline">noatime,delalloc"?</span><br>
<br>
We use freebsd for our sflow collector - the i/o performance was
significantly better when we benchmarked it several years ago.<br>
<br>
Nick<br>
<br>
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