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Re: OpenVZ Crashing [message #40352 is a reply to message #40173]

Fri, 13 August 2010 16:01

MikeDVB
Messages: 12
Registered: April 2010

Junior Member

I've just experienced this as well on a node that had been running for nearly 6 months with no issues. We are using KSplice rebootless kernel updates as well so perhaps an update that was applied triggered this issue.

CentOS Release 5.5
2.6.18-164.15.1.el5.028stab068.9

http://www.screen-shot.net/2010-08-13_1144.png

I'm reluctant to go to the latest OpenVZ Kernel build as it seems as soon as we switch to Deadline the Kernel crashes with a panic however I suppose we could go back to CFQ temporarily.

In the meantime I've reduced the route cache flush down to 300 seconds instead of 600 ... while it creates additional CPU load on the system every time the route cache reloads fully I'd rather have additional CPU periodically than a total loss of responsiveness.

Edit:

Almost immediately:
http://www.screen-shot.net/2010-08-13_1217.png

[root@boreas ~]# dmesg|grep '^IP route'
IP route cache hash table entries: 524288 (order: 10, 4194304 bytes)

The server however has not become unresponsive...

[Updated on: Fri, 13 August 2010 16:19]

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[Message index]

		OpenVZ Crashing By: andre on Sat, 26 December 2009 13:51
		Re: OpenVZ Crashing By: kir on Sat, 26 December 2009 20:19
		Re: OpenVZ Crashing By: TheWiseOne on Thu, 31 December 2009 15:17
		Re: OpenVZ Crashing By: frog252 on Fri, 01 January 2010 13:23
		Re: OpenVZ Crashing By: digitallinx on Fri, 22 January 2010 17:54
		Re: OpenVZ Crashing By: TheWiseOne on Fri, 01 January 2010 15:23
		Re: OpenVZ Crashing By: AnVir on Sun, 03 January 2010 19:26
		Re: OpenVZ Crashing By: AnVir on Sun, 03 January 2010 19:29
		Re: OpenVZ Crashing By: andre on Mon, 04 January 2010 17:20
		Re: OpenVZ Crashing By: rcmc_ronny on Tue, 05 January 2010 09:58
		Re: OpenVZ Crashing By: BigLupu on Fri, 08 January 2010 08:42
		Re: OpenVZ Crashing By: andre on Mon, 18 January 2010 23:08
		Re: OpenVZ Crashing By: rcmc_ronny on Tue, 19 January 2010 08:07
		Re: OpenVZ Crashing By: kir on Wed, 20 January 2010 13:24
		Re: OpenVZ Crashing By: andre on Tue, 02 February 2010 23:54
		Re: OpenVZ Crashing By: vali.dragnuta on Mon, 26 July 2010 08:10
		Re: OpenVZ Crashing By: MikeDVB on Fri, 13 August 2010 16:01
		Re: OpenVZ Crashing By: maratrus on Fri, 13 August 2010 16:58
		Re: OpenVZ Crashing By: MikeDVB on Fri, 13 August 2010 17:03
		Re: OpenVZ Crashing By: maratrus on Fri, 13 August 2010 17:14
		Re: OpenVZ Crashing By: MikeDVB on Fri, 13 August 2010 17:17
		Re: OpenVZ Crashing By: maratrus on Fri, 13 August 2010 17:29
		Re: OpenVZ Crashing By: MikeDVB on Fri, 13 August 2010 17:38
		Re: OpenVZ Crashing By: maratrus on Fri, 13 August 2010 17:46
		Re: OpenVZ Crashing By: MikeDVB on Fri, 13 August 2010 17:57
		Re: OpenVZ Crashing By: MikeDVB on Tue, 17 August 2010 18:08

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