[vdr] vdr on system with raid during resync bus loading

Timothy D. Lenz tlenz at vorgon.com
Mon Mar 8 01:25:53 CET 2010

I have been working on 2 vdr computers, both using raid and last night I 
noticed a problem. I saw the drive light was on steady shortly after I 
updated xine. So I checked to see if there was a problem and found the 
video was freezing for 10-20secs every 10-20 secs. I logged in through 
ssh and found the system very un-slugish. I it's once a month that mdadm 
checks the drives to make sure they are in sync. I stopped vdr/xine/x 
and it was still very slow to respond. It's an Athlon64 x2 and was still 
at 1000Mhz (lowest speed) with the operation using ~64% cpu. Since these 
cpus also slow down the bus as low speed, I changed the up point from 
the default 95% to 50%. But I don't know how much that will help. It was 
late so I wait till today to make the change.

This resync operation had an eta of ~75 minutes. What I'm wondering is 
how much it would effect any recording vdr might be doing when that 
starts? Clearly it messes up xine/vdpau.  The array on that computer is 
2 sata drives each with 3 partitions creating 3 raid1 arrays.

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