[mythtv-users] Where the bottleneck?
Mitch Gore
mitchell.gore at gmail.com
Sat Jan 26 05:56:18 UTC 2008
> I doubt it. I always hate pointing out the obvious, but have you checked
> the hdparam -d (I think) to see if DMA is enabled on all your drives? I got
> bit by this not to long ago adding a new 500GB drive to a very working
> system and found that it didn't have that enabled and caused this exact
> problem.
>
> Kevin
>
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>
Yes i have, it doesnt appear that i can set DMA on. My new system drive is
IDE but the recording drivers are SATA.
[root at mythtv ~]# hdparm /dev/sdb
/dev/sda:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 1216/255/63, sectors = 19541088, start = 0
/dev/sdb:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 60801/255/63, sectors = 976773168, start = 0
[root at mythtv ~]# hdparm /dev/sdc
/dev/sdc:
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 14589/255/63, sectors = 234375000, start = 0
[root at mythtv ~]# fdisk -l
Disk /dev/sda: 10.0 GB, 10005037056 bytes
255 heads, 63 sectors/track, 1216 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000753e4
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1037 8329671 83 Linux (New install
of F8)
/dev/sda2 1038 1215 1429785 82 Linux swap / Solaris
(Current Swap)
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0005606d
Device Boot Start End Blocks Id System
/dev/sdb1 1 1702 13671283+ 83 Linux (Old F8
install)
/dev/sdb3 * 1703 60801 474712717+ 83 Linux (Recordings)
Disk /dev/sdc: 120.0 GB, 120000000000 bytes
255 heads, 63 sectors/track, 14589 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x479eb2b7
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 14258 114527353+ 83 Linux (Recordings)
/dev/sdc2 14259 14589 2658757+ 82 Linux swap / Solaris
(OLD SWAP)
When trying to put DMA on acording to Jarods guide i get the following:
[root at mythtv ~]# hdparm -d1 /dev/sda
/dev/sda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at mythtv ~]# hdparm -d1 /dev/sdb
/dev/sdb:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
[root at mythtv ~]# hdparm -d1 /dev/sdc
/dev/sdc:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Inappropriate ioctl for device
Suggestions?
Mitchell
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