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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120621213235.GF4642@google.com \
--to=tj@kernel.org \
--cc=axboe@kernel.dk \
--cc=joshhunt00@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rni@google.com \
--cc=vgoyal@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.