I changed the scheduler to cfq, and changed back to default libmythtv0.18 (2MB buffer). I'm getting 2005-07-07 17:22:13.294 IOBOUND - blocking in ThreadedFileWriter::Write() 2005-07-07 17:22:15.468 IOBOUND - blocking in ThreadedFileWriter::Write() 2005-07-07 17:22:19.489 IOBOUND - blocking in ThreadedFileWriter::Write() 2005-07-07 17:22:23.995 IOBOUND - blocking in ThreadedFileWriter::Write() 2005-07-07 17:22:29.346 IOBOUND - blocking in ThreadedFileWriter::Write()
So, the cfq scheduler doesn't help at all. I'll revert back to 16MB buffer library. May be if i find time in the weekend, I'll change my /myth file system to jfs and try it out again with 2mb library. Thanks Mudit On 7/7/05, Torbjörn Jansson <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] <> 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. > > > > 2005-07-06 16:07:00.217 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > 2005-07-06 16:07:05.419 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > 2005-07-06 16:07:09.360 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > 2005-07-06 16:07:17.400 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > 2005-07-06 16:07:26.623 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > 2005-07-06 16:07:31.437 IOBOUND - blocking in > > ThreadedFileWriter::Write() > > > > If I stop the copy, the message will also stop. > > > > One thing you may want to try is to change the io scheduler to cfq ( > elevator=cfq argument to kernel at boot ) > That should allow each program to get equal access to the disk so one one is > starved > > I think cfq is the default for fedora. > > These 2 links may be of intrest: > http://lwn.net/Articles/22429/ > http://www.redhat.com/magazine/008jun05/features/schedulers/ > > > _______________________________________________ mythtv-dev mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
