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Re: D-state processes on i2o servers [message #8004 is a reply to message #7991]

Thu, 02 November 2006 18:47

iurly
Messages: 2
Registered: October 2006

Junior Member

Hi,

thanks for your support.
I tried upgrading and switch to cfq scheduling policy, but
I noticed that the MTRR feature is not enabled anymore.
Is this correct?

My general feeling is that write-caching on the disk is disabled, so when the I/O pressure is high the impact on machine responsiveness is noticeable.

How could I check if this is the case or not? I mean, how can I measure disk I/O throughput when there are several concurrent accesses?

Also, could the overhead of vzfs be (at least partially) responsible?

As a side note, on the hardware node we are using an ext3 filesystem, and our VPSes make heavy use of LOTS of small files and LOTS of symlinks. Should we use a different filesystem to improve performance?

Thanks again!
Gerlando

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[Message index]

		D-state processes on i2o servers By: iurly on Sun, 29 October 2006 23:48
		Re: D-state processes on i2o servers By: Vasily Tarasov on Mon, 30 October 2006 06:46
		Re: D-state processes on i2o servers By: vaverin on Thu, 02 November 2006 10:04
		Re: D-state processes on i2o servers By: iurly on Thu, 02 November 2006 18:47
		Re: D-state processes on i2o servers By: vaverin on Wed, 08 November 2006 09:13

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