Thanks, Ross, JohnS and Lamar for your kind responses. It turned out
my friend is using 7200 RPM disk for his write-lots-of-little-files activity
so we're looking at upgrading that to 15000 RPM or getting him a FusionIO
memory card.
Thank you!
Aleksey
On Wed, Oct 20, 2010 at 2:50 PM, Lamar Owe
On Monday, October 18, 2010 09:25:41 pm Aleksey Tsalolikhin wrote:
> Hi. A friend of mine was doing real-time video decoding on
> Fedora Core 13 and he had a performance glitch (1/2 a second
> freeze) every 5-10 seconds. "top" showed flush-253:0
> process at the moment of the freeze.
[snip]
> He a
On Tue, 2010-10-19 at 16:34 -0700, Aleksey Tsalolikhin wrote:
> Still seeing the glitch every 5-20 secs after remounting with "commit=6000".
>
>
> On Tue, Oct 19, 2010 at 4:00 PM, Ross Walker wrote:
> >
> > You could also reduce the dirty interval in sysctl so it flushes sooner
> > therefore f
On Oct 19, 2010, at 7:34 PM, Aleksey Tsalolikhin
wrote:
> Still seeing the glitch every 5-20 secs after remounting with "commit=6000".
>
>
> On Tue, Oct 19, 2010 at 4:00 PM, Ross Walker wrote:
>>
>> You could also reduce the dirty interval in sysctl so it flushes sooner
>> therefore flushes
"uname -a" shows:
Linux localhost.localdomain 2.6.18-194.17.1.el5 #1 SMP Wed Sep 29
12:50:31 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
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Still seeing the glitch every 5-20 secs after remounting with "commit=6000".
On Tue, Oct 19, 2010 at 4:00 PM, Ross Walker wrote:
>
> You could also reduce the dirty interval in sysctl so it flushes sooner
> therefore flushes less data each time.
OK. It's worth a shot. Any idea what the defau
On Oct 19, 2010, at 5:33 PM, Aleksey Tsalolikhin
wrote:
> On Tue, Oct 19, 2010 at 12:48 PM, Toby Bluhm
> wrote:
>> Ext3 filesystem? Maybe altering the commit option at mount time would help:
>>
>> http://www.mjmwired.net/kernel/Documentation/filesystems/ext3.txt#49
>
> Good one, Tony! We'll
On Tue, Oct 19, 2010 at 12:48 PM, Toby Bluhm
wrote:
> Ext3 filesystem? Maybe altering the commit option at mount time would help:
>
> http://www.mjmwired.net/kernel/Documentation/filesystems/ext3.txt#49
Good one, Tony! We'll try that. Thanks!!
Aleksey
_
On 10/19/2010 3:34 PM, Aleksey Tsalolikhin wrote:
> On Mon, Oct 18, 2010 at 9:08 PM, JohnS wrote:
>>
>> On Mon, 2010-10-18 at 18:25 -0700, Aleksey Tsalolikhin wrote:
>>> Hi. A friend of mine was doing real-time video decoding on
>>> Fedora Core 13 and he had a performance glitch (1/2 a second
>>>
On Mon, Oct 18, 2010 at 9:08 PM, JohnS wrote:
>
> On Mon, 2010-10-18 at 18:25 -0700, Aleksey Tsalolikhin wrote:
>> Hi. A friend of mine was doing real-time video decoding on
>> Fedora Core 13 and he had a performance glitch (1/2 a second
>> freeze) every 5-10 seconds. "top" showed flush-253:0
>>
On Mon, 2010-10-18 at 18:25 -0700, Aleksey Tsalolikhin wrote:
> Hi. A friend of mine was doing real-time video decoding on
> Fedora Core 13 and he had a performance glitch (1/2 a second
> freeze) every 5-10 seconds. "top" showed flush-253:0
> process at the moment of the freeze.
And what is the
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