[CentOS] pdflush kernel thread pops up every 10 seconds or so and video decoding grinds to a halt for 1/2 a second
jses27 at gmail.com
Tue Oct 19 00:08:08 EDT 2010
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 Priority of it running at? How many Cores also?
> He also tried CentOS 5.5, and saw a "pdflush" process popping
> up with the same frequency, and resulting in a similar glitch.
> Any other suggestions?
I would not even be concerned. ATM I am seeing pdflush on a server pop
load average: 4.51, 3.41, 3.51
I would only be concerned with the Freeze. What's uname -a on the
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