Arch Linux

nomadpenguin

Member

Registered: 2014-07-24

Posts: 15

How can I diagnose a total system lockup?

When I run chromium and a game (Dota 2 or CS:GO) simultaneously, my system sometimes completely freezes, and I am unable to do anything including switch to a different tty. I can usually run these at the same time, and my memory usage is about 55%. However, sometimes, the lockup occurs and the disk led goes crazy. How would I go about diagnosing this problem? Which logs should I check?  Thanks!

Spider.007

Member

Registered: 2004-06-20

Posts: 1,175

Re: How can I diagnose a total system lockup?

Start with your journal(ctl), you could also try starting an ssh-server, so you might be able to login remotely when it locks up

nomadpenguin

Member

Registered: 2014-07-24

Posts: 15

Re: How can I diagnose a total system lockup?

The only logs from the time the lockup occurred is this:

Feb 22 12:19:37 xanadu systemd-timesyncd[265]: interval/delta/delay/jitter/drift 2048s/-0.020s/0.070s/0.022s/+29ppm
Feb 22 12:53:45 xanadu systemd-timesyncd[265]: interval/delta/delay/jitter/drift 2048s/-0.009s/0.071s/0.022s/+27ppm

The kernel logs also show nothing interesting. Is there something else I should check?

Alad

Wiki Admin/IRC Op

From: Bagelstan

Registered: 2014-05-04

Posts: 2,413

Website

Re: How can I diagnose a total system lockup?

When you say "the disk led goes crazy", do you mean it stays on, or does it keep blinking?

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nomadpenguin

Member

Registered: 2014-07-24

Posts: 15

Re: How can I diagnose a total system lockup?

It stays on or blinks really quickly. I can hear/feel the disk whirring hard.

lucke

Member

From: Poland

Registered: 2004-11-30

Posts: 4,018

Re: How can I diagnose a total system lockup?

Have a look at https://bbs.archlinux.org/viewtopic.php?id=190669 and https://bbs.archlinux.org/viewtopic.php?id=190247.

You could run "dstat -cdnmgs --top-io --top-bio --top-cpu --top-mem" and try to catch its output before the freeze.

Last edited by lucke (2015-02-22 21:12:33)