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I have CentOS 6.x Linux server with kernel 2.6.32-573.8.1.el6.x86_64.

I did some checks today and I found that disk elevator is "deadline".

[root@srv ~]# cat /sys/block/sda/queue/scheduler 
noop anticipatory [deadline] cfq

I have almost same server, but installed 4 mo ago. it is with kernel 2.6.32-573.3.1.el6.x86_64. It's scheduler is "cfq" as expected.

Is there some changes in the kernel, or just my hosting company did it?

I also can not find where this is set - /etc/sysctl.conf is stock.

Nils
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Nick
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1 Answers1

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It's possible to set on the kernel command line with e.g. elevator=deadline. I don't know for sure, but I consider it very unlikely that the default changed between 573.3.1 and 573.8.1 of Red Hat's 2.6.32 kernel.

You can inspect your kernel command line by reading /proc/cmdline.

Charley
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