<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p><font face="Bitstream Vera Sans">Thanks for your help. I will
read the manual on tuned. <br>
</font></p>
<p><font face="Bitstream Vera Sans"><br>
</font></p>
<pre class="moz-signature" cols="72">Ben Bullard
ben79
--------------------
OpenMandriva-QA Team
</pre>
<div class="moz-cite-prefix">On 12/26/2016 07:00 PM, Tomasz Gajc
wrote:<br>
</div>
<blockquote
cite="mid:CAEkne-qP4edpG6hNf92A2zqOxB1jq-GBe0DO3D-cpm5R9RuEEw@mail.gmail.com"
type="cite">
<div dir="auto">Great then. Please be aware that tuned is doing a
lot optimizations. In my case it was setting APM to low on sata
links which reduced performance. Anyways tuned can be adjusted
with proper settings. Read manual.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">27.12.2016 12:28 AM "Ben Bullard" <<a
moz-do-not-send="true" href="mailto:benbullard79@cox.net">benbullard79@cox.net</a>>
napisał(a):<br type="attribution">
<blockquote class="quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>I tried throughput-performance, desktop, and realtime
and had same problem with all. Then I tried disabling
tuned.service and that worked in that there are no
longer drops or fluctuations in read speed under hdparm
over 10 hour time period.<br>
</p>
<div class="quoted-text">
<pre class="m_-4151017798622765672moz-signature" cols="72">Ben Bullard
ben79
--------------------
OpenMandriva-QA Team
</pre>
</div>
<div class="quoted-text">
<div class="m_-4151017798622765672moz-cite-prefix">On
12/25/2016 05:19 PM, Tomasz Paweł Gajc wrote:<br>
</div>
</div>
<blockquote type="cite">
<div class="quoted-text">
<pre>Dnia niedziela, 25 grudnia 2016 16:58:19 CET Ben Bullard pisze:
</pre>
</div>
<blockquote type="cite">
<pre>Drive in question: Model Family: Crucial/Micron
MX100/MX200/M5x0/M600 Client SSDs
Device Model: Crucial_CT500MX200SSD4
Firmware Version: MU04
Ok, this problem isn't going away. TPG, Colin, Bero, or anyone what logs
or test/commands in addition to omv-bug-report.log do I need to include
for a bug report on this.
</pre>
</blockquote>
<pre>Hard to say what may be the problem.
Maybe it's related to aggresive APM on your SATA ports.
tuned daemon may interfere here.
take a look on:
tuned-adm active
then change to diffrent profile:
tuned-adm profile throughput-performance
and then run hdparm tests
</pre>
<div class="quoted-text">
<blockquote type="cite">
<pre>There was a kernel-firmware (20161225) update
today I hoped would address this but it didn't.
</pre>
</blockquote>
</div>
<pre>kernel-firmware has nothing to do with firmware with your disk.
On my SSD Samsung EVO 840 on Lx 3.0 i got stable results:
[root@lazur tpg]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 762 MB in 3.01 seconds = 253.56 MB/sec
[root@lazur tpg]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 778 MB in 3.00 seconds = 259.29 MB/sec
[root@lazur tpg]# hdparm -t /dev/sda
/dev/sda:
Timing buffered disk reads: 778 MB in 3.01 seconds = 258.63 MB/sec
</pre>
<br>
<fieldset
class="m_-4151017798622765672mimeAttachmentHeader"></fieldset>
<br>
<pre>______________________________<wbr>_________________
OM-Cooker mailing list
<a moz-do-not-send="true" class="m_-4151017798622765672moz-txt-link-abbreviated" href="mailto:OM-Cooker@ml.openmandriva.org" target="_blank">OM-Cooker@ml.openmandriva.org</a>
<a moz-do-not-send="true" class="m_-4151017798622765672moz-txt-link-freetext" href="http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org" target="_blank">http://ml.openmandriva.org/<wbr>mailman/listinfo/om-cooker_ml.<wbr>openmandriva.org</a>
</pre>
</blockquote>
</div>
______________________________<wbr>_________________
OM-Cooker mailing list
<a moz-do-not-send="true" href="mailto:OM-Cooker@ml.openmandriva.org">OM-Cooker@ml.openmandriva.org</a>
<a moz-do-not-send="true" href="http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org" rel="noreferrer" target="_blank">http://ml.openmandriva.org/<wbr>mailman/listinfo/om-cooker_ml.<wbr>openmandriva.org</a>
</blockquote></div>
</div>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre wrap="">_______________________________________________
OM-Cooker mailing list
<a class="moz-txt-link-abbreviated" href="mailto:OM-Cooker@ml.openmandriva.org">OM-Cooker@ml.openmandriva.org</a>
<a class="moz-txt-link-freetext" href="http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org">http://ml.openmandriva.org/mailman/listinfo/om-cooker_ml.openmandriva.org</a>
</pre>
</blockquote>
</body></html>