Re: IO scheduler

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On 10/10/2013 22:55, David Nellans wrote:
[...]
init 1 is overkill. In a previous life doing a lot of measuring of flash - I found that simply making sure the machine was "idle" you could get easily get repeatability within 1% for devices doing several hundred thousand IOPS, even those with on-load architectures that were sensitive to CPU usage.
On my side, I've been creating a specific ramfs that does the fio testing I want. This way I'm sure that nothing else is running on my system (like daemons or gui stuff).

That's a little bit extreme but it insures the same OS & environment to be used over & over making all my tests much more comparable over time.

My 2 cents,

Erwan,
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