From: Tejun Heo <tj@kernel.org>
To: Josh Hunt <joshhunt00@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>, Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, rni@google.com
Subject: Re: multi-second application stall in open()
Date: Thu, 21 Jun 2012 14:32:35 -0700 [thread overview]
Message-ID: <20120621213235.GF4642@google.com> (raw)
In-Reply-To: <CAKA=qzaFRubzvyjJQzgThRLsxLDc8NMdZy6WVZMFrF7ohsyjHw@mail.gmail.com>
Hello,
On Thu, Jun 21, 2012 at 04:28:24PM -0500, Josh Hunt wrote:
> When you say the code has diverged from upstream, do you mean from 3.0
> to 3.5?
It's based on something diverged from 2.6.X, so an ancient thing.
> Or maybe I'm misunderstanding what you're getting at. Also, if
> you have any links to the watchdog timer code you're referring to I
> would appreciate it.
Rakesh is the one who observed the bug and wrote the watchdog code.
Rakesh, I think Josh is seeing similar cfqq hang issue. Did the
watchdog code reveal why that happened? Or was it mainly to just kick
the queue and keep it going?
Thanks.
--
tejun
next prev parent reply other threads:[~2012-06-21 21:32 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-06 21:56 multi-second application stall in open() Josh Hunt
2012-03-07 13:43 ` Josh Hunt
2012-03-07 16:28 ` Vivek Goyal
2012-03-07 18:56 ` Jens Axboe
2012-03-07 19:56 ` Vivek Goyal
2012-03-07 21:08 ` Josh Hunt
2012-03-08 22:22 ` Josh Hunt
2012-03-08 23:40 ` Vivek Goyal
[not found] ` <CAKA=qzbsL9UVYLZ3=hoT-1jfp=v=_Sr=h+YeHu0qAA=Ko_7P6w@mail.gmail.com>
2012-06-21 19:26 ` Josh Hunt
2012-06-21 20:32 ` Vivek Goyal
2012-06-21 20:36 ` Tejun Heo
2012-06-21 21:28 ` Josh Hunt
2012-06-21 21:32 ` Tejun Heo [this message]
2012-06-21 21:48 ` Rakesh Iyer
[not found] ` <CAOT6A4-a49wLHcQepUxJCDxOxfnSTEWa72OweLsmrea85OyrCg@mail.gmail.com>
2012-06-22 14:15 ` Vivek Goyal
2012-06-21 21:11 ` Josh Hunt
2012-06-22 14:12 ` Vivek Goyal
2012-06-22 20:05 ` Josh Hunt
2012-06-22 20:22 ` Josh Hunt
2012-06-22 20:42 ` Vivek Goyal
2012-06-22 20:53 ` Josh Hunt
2012-06-22 20:57 ` Josh Hunt
2012-06-22 21:34 ` Josh Hunt
2012-06-25 13:30 ` Vivek Goyal
2012-06-25 16:22 ` Josh Hunt
2012-06-25 21:18 ` Vivek Goyal
2012-06-25 23:05 ` Josh Hunt
2012-06-26 4:01 ` Josh Hunt
2012-06-26 12:59 ` Vivek Goyal
2012-06-26 15:18 ` Josh Hunt
2012-06-26 15:53 ` Vivek Goyal
2012-06-26 20:37 ` Josh Hunt
2012-06-26 20:56 ` Tejun Heo
[not found] ` <CAKA=qzbBtteDjHiPogCvN5jOSiPrDxx=vn96p02bXUy=6=jAgA@mail.gmail.com>
2012-06-26 23:44 ` Josh Hunt
2012-06-27 17:21 ` Josh Hunt
2012-06-27 17:38 ` Tejun Heo
2012-06-27 17:44 ` Josh Hunt
2012-06-27 17:54 ` Tejun Heo
2012-06-27 17:59 ` Josh Hunt
2012-06-29 23:02 ` Tejun Heo
2012-06-30 0:37 ` Josh Hunt
2012-07-04 1:12 ` Tejun Heo
2012-07-18 17:48 ` Tejun Heo
2012-06-26 20:43 ` Tejun Heo
2012-06-25 17:26 ` Tejun Heo
2012-03-07 19:47 ` Josh Hunt
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