Anyone running tmux and observing weird CPU usage?
I run a constant tmux session, which is basically only used for irssi. Every week day, I re-attach to my tmux session around 8AM. That's when the CPU usage slowly starts to build. I disconnect at around 3PM and my CPU usage drops back down to zero. I observe that behaviour every day.
Here's what my monthly CPU usage looks like :
~~http://imgur.com/s98xS.png
(I don't have a daily graph to better illustrate this, I went back to screen for the moment.)
I started keeping an eye on my CPU usage using htop. I don't see a constant CPU usage; just a peak ever 30 seconds or so.
This is tmux 1.3 on Ubuntu 10.10 x86. I was previously running Debian testing x86, same tmux version. I was observing the same behaviour.
I'm just curious to know if I'm the only one seeing this. I checked tmux's bugtracker and the mailing list but I don't see anything close to this. Some people have reported constant CPU usage @ 100% in version 1.2, but nothing close to what I am experiencing.
I also tried the CVS HEAD version of tmux last night, same behaviour.
Thanks!~~
9 Replies
Kinda gave up at the moment and went back to screen because the pacakge in Ubuntu/Debian has the vertical split patch included.
I'm using tmux 1.3-2+squeeze1 under Debian 6.0.3.
~~http://ompldr.org/vYnBmYg/fuck_the_tmux.jpg
At some time between 22h and 0h I detached the session and around 9 I reattached to it.
Have you guys solved your problem some way?
Thanks!~~
Running tmux 1.5-3 on a Debian Testing node using the latest Latest 3.0 kernel.
Are you using the 3.x series kernel, or a 2.6 kernel?
@Kint:
I moved back from Ubuntu to Debian Testing some time ago, and the problem has disappeared.
Running tmux 1.5-3 on a Debian Testing node using the latest Latest 3.0 kernel.
Are you using the 3.x series kernel, or a 2.6 kernel?
I'm running debian stable, so i'm on a 2.6 kernel and with an older tmux. Will try to get the newer one and test with it before upgrading the whole system (which I'll try to avoid).
Thanks for your answer!
I think tmux 1.5 solved it for me.
@Kint:
If you want to stick with Squeeze, try grabbing the latest tmux sources and making a simple Debian package with CheckInstall.
https://help.ubuntu.com/community/CheckInstall I think tmux 1.5 solved it for me.
Thanks a lot for the CheckInstall suggestion, wasn't aware of it and it's really nice.
Upgrading to tmux 1.5 solved the problem.
Thanks again!
@marc0s:
I'm running debian stable, so i'm on a 2.6 kernel and with an older tmux.
It's better to use Squeeze-Backports (less troubles when upgrading). I.E.:
Besides, you can run 3.x kernel with Squeeze. I'm currently running 3.0.4-linode38 with it.
@advocatux:
@marc0s:I'm running debian stable, so i'm on a 2.6 kernel and with an older tmux.
It's better to use Squeeze-Backports (less troubles when upgrading). I.E.:
http://packages.debian.org/squeeze-backports/tmux
I totally forgot about backports… Didn't either mind to check if tmux was available there… Probably it's a better idea as you say regarding upgrades.
Thanks