[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

[linux-lvm] Re: [PATCH] per process request limits (was Re: IO scheduler, queuedepth, nr_requests)




Andrew Morton wrote:


Nick Piggin <piggin cyberone com au> wrote:

Even with this patch, it might still be a good idea to allow
pdflush to disregard the limits...


Has it been confirmed that pdflush is blocking in get_request_wait()? I guess that can happen very occasionally because we don't bother with any locking around there but if it's happening a lot then something is bust.



Miquel's analysis is pretty plausible, but I'm not sure if he's confirmed it or not, Miquel? Even if it isn't happening a lot, and something isn't bust it might be a good idea to do this.




[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]