Blathering for Thursday, 06 December 2007

    18:52: Ubuntu's month RAID check is causing jerky video playback on MythTV
    18:52: Specifically, /etc/cron.d/mdadm kicks off a RAID array check on the first Sunday of the month
    18:53: But with no IO limits
    18:53: echo 10000 > /proc/sys/dev/raid/speed_limit_max doesn't seem to actually reduce the amount of disk IO the check is causing though
    18:53: Which makes me sad
    18:57: Ahhh, I was misreading the units for the /proc file
    18:57: Reducing the minimum to 100 and the maximum to 500 fixes the video
    18:57: But does bad things to how long the check will take
    18:58: Now to experiment with upping the maximum speed, while keeping the minimum low
    18:58: Hopefully that will result in it using idle disk time to sync, but not breaking video playback

    Tags for this post: blather

posted at: 18:58 | path: /blather | permanent link to this entry