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From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: Christoph Hellwig <hch@infradead.org>
Cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: [xfs-masters] xfs deadlock in stable kernel 3.0.4
Date: Wed, 21 Sep 2011 18:48:29 +0200	[thread overview]
Message-ID: <4E7A155D.9060703@profihost.ag> (raw)
In-Reply-To: <20110921122649.GA16602@infradead.org>

Hi,

Am 21.09.2011 14:26, schrieb Christoph Hellwig:
> What is also strange is that we allocate a xfs_ail_wq, but don't
> actually use it, although it would have the same idea.  Stefan,
> can you try the following patch?  This moves the ail work to it's
> explicit queue, and makes sure we never have the same work item
> (= same fs to be pushed) concurrently.

Sorry, but with your patch everything is awfully slow. Just the sequ. 
file creation takes on an SSD extremely long. I interrupted the test.

i/o top from an SSD:
Total DISK READ: 0 B/s | Total DISK WRITE: 9.88 M/s
   PID USER      DISK READ  DISK WRITE   SWAPIN    IO>    COMMAND 

  1377 root           0 B/s       0 B/s  0.00 % 99.99 % [xfsbufd/sda3]
  2219 root           0 B/s       0 B/s  0.00 % 99.99 % [flush-8:0]
  2746 root           0 B/s    9.88 M/s  0.00 %  0.00 % bonnie++ -u root 
-s 0 -n 1024:32768:0:1024:4096 -d /mnt

Stefan

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  parent reply	other threads:[~2011-09-21 16:48 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-10 12:23 xfs deadlock in stable kernel 3.0.4 Stefan Priebe
2011-09-12 15:21 ` Christoph Hellwig
2011-09-12 16:46   ` Stefan Priebe
2011-09-12 20:05     ` Christoph Hellwig
2011-09-13  6:04       ` Stefan Priebe - Profihost AG
2011-09-13 19:31         ` Stefan Priebe - Profihost AG
2011-09-13 20:50         ` Christoph Hellwig
2011-09-13 21:52           ` [xfs-masters] " Alex Elder
2011-09-13 21:58             ` Alex Elder
2011-09-13 22:26               ` Christoph Hellwig
2011-09-14  7:26           ` Stefan Priebe - Profihost AG
2011-09-14  7:48             ` Stefan Priebe - Profihost AG
2011-09-14  8:49               ` Stefan Priebe - Profihost AG
2011-09-14 14:30                 ` Christoph Hellwig
2011-09-14 14:30               ` Christoph Hellwig
2011-09-14 16:06                 ` Stefan Priebe - Profihost AG
2011-09-18  9:14                 ` Stefan Priebe - Profihost AG
2011-09-18 20:04                   ` Christoph Hellwig
2011-09-19 10:54                     ` Stefan Priebe - Profihost AG
2011-09-18 23:02                   ` Dave Chinner
2011-09-20  0:47                     ` Stefan Priebe
2011-09-20  1:01                       ` Stefan Priebe
2011-09-20 10:09                     ` Stefan Priebe - Profihost AG
2011-09-20 16:02                       ` Christoph Hellwig
2011-09-20 17:23                         ` Stefan Priebe - Profihost AG
2011-09-20 17:24                           ` Christoph Hellwig
2011-09-20 17:35                             ` Stefan Priebe - Profihost AG
2011-09-20 22:30                               ` Christoph Hellwig
2011-09-21  2:11                                 ` [xfs-masters] " Dave Chinner
2011-09-21  7:40                                   ` Stefan Priebe - Profihost AG
2011-09-21 11:42                                     ` Dave Chinner
2011-09-21 11:55                                       ` Stefan Priebe - Profihost AG
2011-09-21 12:26                                       ` Christoph Hellwig
2011-09-21 13:42                                         ` Stefan Priebe
2011-09-21 16:48                                         ` Stefan Priebe - Profihost AG [this message]
2011-09-21 17:26                                           ` Stefan Priebe - Profihost AG
2011-09-21 19:01                                         ` Stefan Priebe - Profihost AG
2011-09-21 23:07                                         ` Dave Chinner
2011-09-22 14:14                                           ` Christoph Hellwig
2011-09-22 21:49                                             ` Dave Chinner
2011-09-22 22:01                                               ` Christoph Hellwig
2011-09-23  5:28                                                 ` Stefan Priebe - Profihost AG
2011-09-22  0:53                                       ` Dave Chinner
2011-09-22  5:27                                         ` Stefan Priebe - Profihost AG
2011-09-22  7:52                                           ` Stefan Priebe - Profihost AG
2011-09-21  7:36                                 ` Stefan Priebe - Profihost AG
2011-09-21 11:39                                   ` Christoph Hellwig
2011-09-21 13:39                                     ` Stefan Priebe
2011-09-21 14:17                                       ` Christoph Hellwig

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