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Sluggishness after a while [message #29891]

Mon, 28 April 2008 22:57

ugob
Messages: 271
Registered: March 2007

Senior Member

Hi,

I'm running 2.6.18-53.1.13.el5.028stab053.10PAE on one of my server and once in a while, it starts becoming slow and unresponsive, and it comes back to normal after a reboot. That is really weird. One symptom is that when I execute "top" it takes a very long while to load, while "ps aux" is instant. No failcnt in user_beancounters.

Any idea?

HW: HP lpr2000 2x PIII Tualatin 1.13, 1.750 MB RAM.

Regards,
Ugo

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: Sluggishness after a while [dies after a while] [message #29938 is a reply to message #29891]

Wed, 30 April 2008 16:40

jergendutch
Messages: 16
Registered: April 2008

Junior Member

I see this on CentOS 5.1 as host. I can't get past entering my username. I have enabled magic sysrq to debug it.

2.6.18-53.1.13.el5.028stab053.10

[Updated on: Wed, 30 April 2008 16:41]

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Re: Sluggishness after a while [dies after a while] [message #29939 is a reply to message #29938]

Wed, 30 April 2008 16:51

ugob
Messages: 271
Registered: March 2007

Senior Member

Mine is a Centos 4.x host.

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: Sluggishness after a while [message #29956 is a reply to message #29891]

Thu, 01 May 2008 16:07

TheWiseOne
Messages: 66
Registered: September 2005
Location: Pennsylvania

Member

Do you see anything related to "unregister_netdevice" in the kernel messages log?

Matt Ayres
TekTonic

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Re: Sluggishness after a while [message #29958 is a reply to message #29956]

Thu, 01 May 2008 17:20

ugob
Messages: 271
Registered: March 2007

Senior Member

/var/log/messages:Apr 28 06:05:16 hnlubik01 kernel: ibm_acpi: Unknown symbol backlight_device_unregister
/var/log/messages.1.gz:Apr 26 08:04:28 hnlubik01 kernel: ibm_acpi: Unknown symbol backlight_device_unregister

That is all I got about "unregister". It was at boot.

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

[Updated on: Thu, 01 May 2008 17:33]

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Re: Sluggishness after a while [message #30008 is a reply to message #29958]

Mon, 05 May 2008 14:49

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hi,

And what does "top" show? Anything strange? Processor or disk activity.
Nothing in logs or in dmesg?

P.S. May be it worth checking your server?

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Re: Sluggishness after a while [message #30060 is a reply to message #29891]

Wed, 07 May 2008 12:40

jergendutch
Messages: 16
Registered: April 2008

Junior Member

I would try a hardware test and bugzilla this.

http://wiki.openvz.org/Hardware_testing

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Re: Sluggishness after a while [message #30176 is a reply to message #29891]

Wed, 14 May 2008 07:52

jergendutch
Messages: 16
Registered: April 2008

Junior Member

Try booting with "noacpi":

1. At the grub boot screen type "a" for append
2. Type " noacpi" (space acpi), press enter
3. Press enter again or "b" for boot.

WFM.

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