[mythtv] fix for IOBOUND - blocking in ThreadedFileWriter::Write

[Robert Tsai]

On Wed, Jul 06, 2005 at 10:27:32PM -0700, Mudit Wahal wrote:
> so which file system do you recommend ? xfs ? reiser ?

This has been covered rather thoroughly in the mythtv documentation,
with links to the mailing list archives for performance numbers. XFS,
Reiser, and JFS are all good.

> On 7/6/05, J. Donavan Stanley <jdonavan at jdonavan.net> wrote:
> > Mudit Wahal wrote:
> > 
> > >Hi,
> > >
> > >I'm running myth 0.18 release version on a 2.6.12.1 kernel. My card is
> > >HD3000 HDTV tuner card. I've one 180GB hard drive in my setup,
> > >standard knoppix myth partition. /, /root, /cache and /myth , are all
> > >ext 3.
> > >
> > >Whenever the tuner is recording a program, and I try to copy a large
> > >file, I get the following error message in the backend logs.
> > >
> > >
> > >
> > >
> > ext3 which isn't the best choice storing and moving around large files.
> > Using the write filesystem for the job would probably clear your problem
> > up without the need to make any changes to Myth.
> > 
> > >I think 2MB buffer may be fine for SD stuff, but for HD stuff, we need
> > >a bigger buffer. I'll experiment with a 12MB and 16MB buffer also. I
> > >did check the 0.18.1 code and the SVN code and the value is still 2MB.
> > >
> > >
> > >
> > I routinely copy over multi GB files while HD streams are recording
> > without issue.

--Rob
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