>>> Regarding the long fsyncs, here's a trace...
>>>
>>> I upgraded to a more recent kernel - 2.6.18.6 - and ran it on a
>>workstation.
>>> This particular box has In this case the elevator is CFQ.
>>>
>>> This sample came from a stall that lasted about 2.5 minutes(!) - the
longest
>>> one I've
Regarding the long fsyncs, here's a trace...
I upgraded to a more recent kernel - 2.6.18.6 - and ran it on a
workstation.
This particular box has In this case the elevator is CFQ.
This sample came from a stall that lasted about 2.5 minutes(!) - the
longest
one I've seen yet. The box is a
On Mon, 29 Jan 2007 17:02:14 -0500
"Matthew Kirk" <[EMAIL PROTECTED]> wrote:
> Regarding the long fsyncs, here's a trace...
>
> I upgraded to a more recent kernel - 2.6.18.6 - and ran it on a workstation.
> This particular box has In this case the elevator is CFQ.
>
> This sample came from a
+0x0/0x37
[] kthread+0x85/0xaa
[] kthread+0x0/0xaa
[] kernel_thread_helper+0x5/0xb
-Original Message-
From: Andrew Morton [mailto:[EMAIL PROTECTED]
Sent: Friday, January 26, 2007 6:17 AM
To: Matthew Kirk
Cc: linux-kernel@vger.kernel.org
Subject: Re: fsync occasionally very slow
On Fri
Subject: Re: fsync occasionally very slow
On Fri, 26 Jan 2007 05:37:38 -0500
Matthew Kirk [EMAIL PROTECTED] wrote:
I am working on an application that fsync(2) files and directories as
needed.I’m seeing intermittent stalls on fsync that can last many
seconds.
Please generate an all-task
On Mon, 29 Jan 2007 17:02:14 -0500
Matthew Kirk [EMAIL PROTECTED] wrote:
Regarding the long fsyncs, here's a trace...
I upgraded to a more recent kernel - 2.6.18.6 - and ran it on a workstation.
This particular box has In this case the elevator is CFQ.
This sample came from a stall that
On Fri, 26 Jan 2007 14:33:36 -0500
"Matthew Kirk" <[EMAIL PROTECTED]> wrote:
> Sorry, this will show my ignorance... my system is lacking
> /proc/sysrq-trigger. I can find how to build a kernel with the magic sysrq
> key (CONFIG_MAGIC_SYSRQ=y), and have done so, but I still don't have
>
that's what's missing. Presumably it's something in
.config I'm just not seeing?
Thanks again!
Matt
-Original Message-
From: Andrew Morton [mailto:[EMAIL PROTECTED]
Sent: Friday, January 26, 2007 6:17 AM
To: Matthew Kirk
Cc: linux-kernel@vger.kernel.org
Subject: Re: fsync occasionally
On Fri, 26 Jan 2007 05:37:38 -0500
"Matthew Kirk" <[EMAIL PROTECTED]> wrote:
> I am working on an application that fsync(2) files and directories as
> needed.I’m seeing intermittent stalls on fsync that can last many
> seconds.
Please generate an all-task backtrace during the stall via:
Hi
I am working on an application that fsync(2) files and directories as
needed.I’m seeing intermittent stalls on fsync that can last many
seconds. The file system is mounted ext3, however I have reproduced the
problem with ext2. The as scheduler is in use. I have also tried
deadline. I
Hi
I am working on an application that fsync(2) files and directories as
needed.I’m seeing intermittent stalls on fsync that can last many
seconds. The file system is mounted ext3, however I have reproduced the
problem with ext2. The as scheduler is in use. I have also tried
deadline. I
On Fri, 26 Jan 2007 05:37:38 -0500
Matthew Kirk [EMAIL PROTECTED] wrote:
I am working on an application that fsync(2) files and directories as
needed.I’m seeing intermittent stalls on fsync that can last many
seconds.
Please generate an all-task backtrace during the stall via:
dmesg -n 8
that's what's missing. Presumably it's something in
.config I'm just not seeing?
Thanks again!
Matt
-Original Message-
From: Andrew Morton [mailto:[EMAIL PROTECTED]
Sent: Friday, January 26, 2007 6:17 AM
To: Matthew Kirk
Cc: linux-kernel@vger.kernel.org
Subject: Re: fsync occasionally
On Fri, 26 Jan 2007 14:33:36 -0500
Matthew Kirk [EMAIL PROTECTED] wrote:
Sorry, this will show my ignorance... my system is lacking
/proc/sysrq-trigger. I can find how to build a kernel with the magic sysrq
key (CONFIG_MAGIC_SYSRQ=y), and have done so, but I still don't have
/proc/sysrq-*
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