Messages in this thread |  | | | Date | Tue, 7 Dec 2004 23:30:27 -0800 | | From | Andrew Morton <> | | Subject | Re: Time sliced CFQ io scheduler |
Jens Axboe <axboe@suse.de> wrote: > > I think we need to end up with something that sets the machine profile > for the interesting disks. Some things you can check for at runtime > (like the writes being extremely fast is a good indicator of write > caching), but it is just not possible to cover it all. Plus, you end up > with 30-40% of the code being convoluted stuff added to detect it.
We can detect these things from userspace. Parse the hdparm/scsiinfo output, then poke numbers into /sys tunables.
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