From: Eli Cohen <eli@mellanox.co.il>
To: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: wait_for_completion_timeout problem ???
Date: Thu, 01 Mar 2007 17:39:23 +0200 [thread overview]
Message-ID: <1172763563.25580.5.camel@mtls03> (raw)
In-Reply-To: <b647ffbd0703010714m5f8546ebw95ec607b38ba7e1@mail.gmail.com>
On Thu, 2007-03-01 at 16:14 +0100, Dmitry Adamushko wrote:
> Mea culpa. Don't know why I took it as 10 ms.. Yep, in case of seconds
> it rather becomes a mere theoretical possibility.
>
> Are you sure there are no other "waiters" being blocked on the same
> "completion" at the same time? complete_all()?
>
> Anyway, do "cat /proc/your_task_pid/status" and look at the "State: "
> field. It should be "R" in case wake_up_*() was called for this task.
>
Thanks for your good advices. Right now it seems that increasing the
timeout to 60 sec did the trick :-)
The test I was running has many threads and maybe there is starvation of
tasks. The system is also not too responsive to say the least.
next prev parent reply other threads:[~2007-03-01 15:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-01 13:32 wait_for_completion_timeout problem ??? Eli Cohen
2007-03-01 14:28 ` Dmitry Adamushko
2007-03-01 14:49 ` Eli Cohen
2007-03-01 15:14 ` Dmitry Adamushko
2007-03-01 15:39 ` Eli Cohen [this message]
2007-03-01 16:05 ` Eli Cohen
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