<div dir="ltr"><div><div><div>Mihai:<br><br></div>Yes - your right its the systemd unit called x2goserver, and it does appear to just start x2gocleansessions script. I will do some testing with older kernels to see if the problem is still present.<br><br></div>Thanks for the quick response.<br><br></div>Rett Walters<br><div><div><br><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 1, 2015 at 3:11 PM, Mihai Moldovan <span dir="ltr"><<a href="mailto:ionic@ionic.de" target="_blank">ionic@ionic.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Rett,<br>
<br>
<br>
On 01.04.2015 08:38 PM, Rett Walters wrote:<br>
> I have two machines running Archlinux with x2goserver running from<br>
> arch repository packages that both exhibit abnormally high CPU usage<br>
> in ksoftirqd/x (where x=the cpu core #). Here is an example top<br>
> output showing the usage while idle - ksoftirqd is always the top user<br>
> of CPU when the system is idle:<br>
><br>
> [...]<br>
><br>
> If I stop the x2goserver process, the ksoftirqd processes drop down to<br>
> almost nothing. This seems to coincide with the 3.18 and 3.19 linux<br>
> kernel series.<br>
><br>
> Could this be some sort of interaction between x2goserver and the kernel?<br>
<br>
What process are you talking about specifically? "x2goserver" as such<br>
has no daemon process, aside from the "x2gocleansessions" script that is<br>
meant to cleanup after sessions terminated etc.<br>
<br>
If you mean the daemon started via the x2goserver systemd unit, that's<br>
likely x2gocleansessions. It should be running consistently, but not<br>
cause high CPU stress due to the fact it's only running its main loop<br>
every two seconds. Maybe that needs to be raised, but I doubt it.<br>
<br>
Did you ever see this behavior change, i.e., did older kernel versions<br>
not exhibit this behavior?<br>
<br>
My Gentoo-based box running 3.19.0 doesn't show this problem. ksoftirq<br>
is, if at all, causing 0.5% CPU load with x2gocleansessions running. But<br>
my hardware is, naturally, different from your's, too.<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
Mihai<br>
<br>
</font></span></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div>Rett Walters<br></div><a href="http://www.linuxpoweruser.com" target="_blank">www.linuxpoweruser.com</a><br></div></div>
</div>