[mythtv-users] Upgrading backend, need recommendations

gibble gibble at gmail.com
Thu Nov 8 22:43:42 UTC 2007




Bill Omer-2 wrote:
> 
>> > >
>> > > If the delay is when you go to the watch recordings screen, could it
>> not be
>> > > the network?  Or the front end that's causing the delay rather than
>> the
>> > > backend?
>> > >
> 
> 
> The load on the frontend seems good.  On the backend though, looks
> like I have some io wait.  Here's a snippet from iostat, looks like my
> second drive (the one for recordings) is being hit constantly.
> Running iostat 1, the blk read/wrtn is pretty close to the same
> figures constantly.   I'm willing to bet by biggest slow down is this
> ide drive.
> 
> 
> avg-cpu:  %user   %nice %system %iowait  %steal   %idle
>            0.00    0.00   20.20   19.19    0.00   60.61
> 
> Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
> hda               0.00         0.00         0.00          0          0
> hdc              51.52      8727.27      2294.95       8640       2272
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> 

Is DMA enabled on that drive?

http://knoppmythwiki.org/index.php?page=Optimize+Hard+Drive+Performance
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