Messages in this thread | | | Subject | Re: Mysterious CFQ crash and RCU | From | Paul Bolle <> | Date | Wed, 25 May 2011 11:40:25 +0200 |
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On Wed, 2011-05-25 at 11:30 +0200, Jens Axboe wrote: > If you build CFQ modular, then all you have to do is switch to using CFQ > before starting your testing: > > # echo cfq > /sys/block/sda/queue/scheduler > > and switch sda to eg noop before you can remove cfq-iosched again. As > long as things crash, then you wont be able to remove cfq anyway and you > have to reboot to test something new anyway. So the modular nature of > cfq-iosched may not help you all that much in the end.
The main advantage I hope for is to reduce build and install time (it's much quicker to rebuild a module, copy it into /lib/modules, perhaps upgrade the initramfs, etc., than it is to rebuild an entire kernel, all its modules, etc.).
Paul
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