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Re: But why is the RAM gone?! [message #27031 is a reply to message #26664]

Thu, 07 February 2008 10:26

xemul
Messages: 248
Registered: November 2005

Senior Member

Well. Large amount of inactive pages coupled with a rather big buffer_head kmemcache makes me think, that there are too many pages queued for disk output, but not complete yet.

This can be an IO problem somewhere at the iosched/driver/disk side.

Which iosched do you use? If CFQ, then you may try to switch to anticipatory one (called "as" in kernel) with this command:

# echo "as" > /sys/block/<device-name>/queue/scheduler

so we will check whether this is an iosched or not (I believe it is not, but we should be sure)

As far as the driver is concerned - what kind of driver do you use - is this an out-of-tree driver, or the one provided with the kernel sources?

And I'm still worried with you driver warnings you mentioned Sad

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[Message index]

		But why is the RAM gone?! By: HubertD on Wed, 30 January 2008 11:39
		Re: But why is the RAM gone?! By: maratrus on Wed, 30 January 2008 14:34
		Re: But why is the RAM gone?! By: HubertD on Wed, 30 January 2008 15:01
		Re: But why is the RAM gone?! By: HubertD on Wed, 30 January 2008 18:41
		Re: But why is the RAM gone?! By: kir on Wed, 30 January 2008 19:39
		Re: But why is the RAM gone?! By: HubertD on Thu, 31 January 2008 08:18
		Re: But why is the RAM gone?! By: xemul on Fri, 01 February 2008 10:27
		Re: But why is the RAM gone?! By: HubertD on Fri, 01 February 2008 12:03
		Re: But why is the RAM gone?! By: xemul on Fri, 01 February 2008 12:50
		Re: But why is the RAM gone?! By: HubertD on Fri, 01 February 2008 13:03
		Re: But why is the RAM gone?! By: HubertD on Mon, 04 February 2008 11:47
		Re: But why is the RAM gone?! By: rickb on Mon, 04 February 2008 17:44
		Re: But why is the RAM gone?! By: xemul on Tue, 05 February 2008 11:46
		Re: But why is the RAM gone?! By: HubertD on Tue, 05 February 2008 15:52
		Re: But why is the RAM gone?! By: HubertD on Wed, 06 February 2008 11:58
		Re: But why is the RAM gone?! By: xemul on Wed, 06 February 2008 13:25
		Re: But why is the RAM gone?! By: HubertD on Wed, 06 February 2008 14:47
		Re: But why is the RAM gone?! By: HubertD on Wed, 06 February 2008 17:43
		Re: But why is the RAM gone?! By: xemul on Thu, 07 February 2008 10:26
		Re: But why is the RAM gone?! By: HubertD on Thu, 07 February 2008 12:52
		Re: But why is the RAM gone?! By: HubertD on Thu, 07 February 2008 22:58
		Re: But why is the RAM gone?! By: den on Fri, 08 February 2008 13:04

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