Scheduler question

Ivan Voras ivoras at
Mon Feb 7 10:38:24 UTC 2011

On 07/02/2011 04:12, Daniel O'Connor wrote:
> On 07/02/2011, at 13:02, Ivan Voras wrote:
>>>> I'll be looking at it on Monday, I will let you know :)
>>> No luck with mlock() so it wouldn't appear to be paging is the issue :(
>> I'm also interested in raw device vs file system access!
> Oops, sorry.. I just tried that now but it doesn't improve things :(

Meaning: you still get jitter?

> I am writing directly to /dev/ad10 but stressing /dev/ad14 (sudo tar -cf /dev/null /local0)

Can you do only one of those things? I.e. leave all the file systems
alone and just do something like 'diskinfo -vt /dev/ad14'?

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