<div class="gmail_quote">On Mon, Jun 25, 2012 at 8:31 AM, Andreas Kurz <span dir="ltr"><<a href="mailto:andreas@hastexo.com" target="_blank">andreas@hastexo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">On 06/22/2012 09:38 PM, J.R. Lillard wrote:<br>
> Witnessed another bandwidth spike that slowed my stacked layer down.<br>
><br>
> 10: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate A r-----<br>
> ns:192538032 nr:0 dw:599650316 dr:1701817080 al:4481613 bm:43214<br>
> lo:1 pe:2050 ua:0 ap:2049 ep:1 wo:f oos:0<br>
> resync: used:0/61 hits:3274 misses:165 starving:0 dirty:0<br>
> changed:165<br>
> act_log: used:135/3833 hits:788561 misses:25007 starving:0<br>
> dirty:28 changed:24979<br>
<br>
</div>You also increased al-extents for the lower-level DRBD device of your<br>
stacked resource?<br></blockquote><div><br></div><div>Yes. They are also at 3833 now.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
Regards,<br>
Andreas<br>
<br>
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</div><div class="im">> On Fri, Jun 22, 2012 at 8:24 AM, J.R. Lillard <<a href="mailto:jlillard@ghfllc.com">jlillard@ghfllc.com</a><br>
</div><div class="im">> <mailto:<a href="mailto:jlillard@ghfllc.com">jlillard@ghfllc.com</a>>> wrote:<br>
><br>
> My starving count was pretty high. I maxed out my al-extents and<br>
> will see if that helps. Thanks.<br>
><br>
><br>
> On Fri, Jun 22, 2012 at 4:22 AM, Andreas Kurz <<a href="mailto:andreas@hastexo.com">andreas@hastexo.com</a><br>
</div><div><div class="h5">> <mailto:<a href="mailto:andreas@hastexo.com">andreas@hastexo.com</a>>> wrote:<br>
><br>
> On 06/20/2012 11:51 PM, J.R. Lillard wrote:<br>
> > I have a lower-level setup on Protocol C and a stacked layer<br>
> of Protocol<br>
> > A going through Proxy over a WAN. There are times when my<br>
> disk activity<br>
> > spikes causing the Proxy buffers to fill up a bit. While this is<br>
> > happening the Pending count on my stacked resources goes up<br>
> and causes<br>
> > my access to those resources to slow down. Is this normal? I<br>
> thought<br>
> > with Protocol A as soon as my local write was finished things<br>
> would<br>
> > continue.<br>
><br>
> You checked that you are not running out of activity log extents<br>
> for the<br>
> stacked resource?<br>
><br>
> Do an: echo 1 >/sys/module/drbd/parameters/proc_details<br>
><br>
> ... and have a look at "starving" counter in /proc/drbd ... should<br>
> ideally be 0 and definitely not increasing regularly. If it does,<br>
> increase the al-extents value for the stacked resource (max is<br>
> 3833 in<br>
> drbd 8.3 ... IIRC)<br>
><br>
> Regards,<br>
> Andreas<br>
><br>
> --<br>
> Need help with DRBD?<br>
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><br>
> ><br>
> > --<br>
> > J.R. Lillard<br>
> > System / Network Admin<br>
> > Web Programmer<br>
> > Golden Heritage Foods<br>
> > 120 Santa Fe St.<br>
> > Hillsboro, KS 67063<br>
> ><br>
> ><br>
> ><br>
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> --<br>
> J.R. Lillard<br>
> System / Network Admin<br>
> Web Programmer<br>
> Golden Heritage Foods<br>
> 120 Santa Fe St.<br>
> Hillsboro, KS 67063<br>
><br>
><br>
><br>
><br>
> --<br>
> J.R. Lillard<br>
> System / Network Admin<br>
> Web Programmer<br>
> Golden Heritage Foods<br>
> 120 Santa Fe St.<br>
> Hillsboro, KS 67063<br>
><br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>J.R. Lillard<div>System / Network Admin</div><div>Web Programmer</div><div>Golden Heritage Foods</div><div>120 Santa Fe St.</div><div>Hillsboro, KS 67063</div>
<br>