<div dir="ltr">I changed the default config some time ago, but I forgot to close ISPN-3334.<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Oct 11, 2013 at 4:35 PM, Ray Tsang <span dir="ltr"><<a href="mailto:saturnism@gmail.com" target="_blank">saturnism@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">also, don't forget this one: <a href="https://issues.jboss.org/browse/ISPN-3334" target="_blank">https://issues.jboss.org/browse/ISPN-3334</a></div>
<div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Oct 11, 2013 at 9:22 AM, Erik Salter <span dir="ltr"><<a href="mailto:an1310@hotmail.com" target="_blank">an1310@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Radim,<br>
<br>
If you're using VMs, this may be of use. I actually experienced a JGroups<br>
lockup in production with FC in decrementCredits. What happened in my case<br>
is that virtualization tools had actually screwed with the system clock --<br>
it was reported that JBoss took ~1 year to start.<br>
<br>
<a href="http://www.vmware.com/pdf/vmware_timekeeping.pdf" target="_blank">http://www.vmware.com/pdf/vmware_timekeeping.pdf</a><br>
<br>
The upshot is that I had to take FC out of my stack going forward.<br>
<span><font color="#888888"><br>
Erik<br>
</font></span><div><div><br>
-----Original Message-----<br>
From: <a href="mailto:infinispan-dev-bounces@lists.jboss.org" target="_blank">infinispan-dev-bounces@lists.jboss.org</a><br>
[mailto:<a href="mailto:infinispan-dev-bounces@lists.jboss.org" target="_blank">infinispan-dev-bounces@lists.jboss.org</a>] On Behalf Of Radim Vansa<br>
Sent: Friday, October 11, 2013 8:41 AM<br>
To: <a href="mailto:infinispan-dev@lists.jboss.org" target="_blank">infinispan-dev@lists.jboss.org</a><br>
Subject: [infinispan-dev] Is anyone else experiencing JGRP-1675<br>
<br>
Hi,<br>
<br>
since Infinispan moved to JGroups 3.4, we're experiencing occassional<br>
deadlocks in some tests - most of threads that send anything over JGroups<br>
are waiting in JGroups' FlowControl.decrementCredits. The problem sometimes<br>
goes away after several seconds, but it produces some ugly spikes in our<br>
througput/response time charts. Originally this affected just some RadarGun<br>
tests but this is appearing in some client-server tests as well (we've<br>
recently investigated an issue where this appeared in a regular soak test).<br>
I was looking into that [1] for some time but haven't really figured out the<br>
cause. The workaround is to set up MFC and UFC credits high enough (I use<br>
10M) and stuff works then. I was trying to reproduce that on pure JGroups,<br>
but unsuccessfully.<br>
I am not asking anyone to dig into that, but I wanted to know whether QA is<br>
alone experiencing that or if there are more of us.<br>
<br>
Radim<br>
<br>
[1] <a href="https://issues.jboss.org/browse/JGRP-1675" target="_blank">https://issues.jboss.org/browse/JGRP-1675</a><br>
<br>
--<br>
Radim Vansa <<a href="mailto:rvansa@redhat.com" target="_blank">rvansa@redhat.com</a>><br>
JBoss DataGrid QA<br>
<br>
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