[mythtv-users] recording drive bottle neck suggestions..

[John Drescher]

On Mon, Aug 31, 2009 at 6:35 PM,
sonofzev at iinet.net.au<sonofzev at iinet.net.au> wrote:
>
>
> On Tue Sep  1  8:00 , John Drescher  sent:
>
>>On Mon, Aug 31, 2009 at 5:49 PM,
>>sonofzev at iinet.net.ausonofzev@iinet.net.au> wrote:
>>>
>>>
>>> On Tue Sep  1  4:50 , Yeechang Lee  sent:
>>>
>>>>sonofzev at iinet.net.au sonofzev at iinet.net.au> says:
>>>>> On Sunday night I ended up having a bottle neck as it was the first
>>>>> time I ever had 5 recordings going at one (1 HD 4 SD)...
>>>>
>>>>Here's how I answered a similar question a few months back:
>>>>
>>>>http://www.gossamer-threads.com/lists/mythtv/users/369400#369400>
>>>>(read the whole thread)
>>>>
>>>>--
>>> Thanks to everyone who has responded to this.. I think I know what to do. but to
>>> answer a couple of questions
>>> 1. DVB-T tuners (1x dvico fusion lite.. 1 x dual express.. 3 tuners on 2 cards)
>>> 2. DB is on OS drive while recording is elsewhere....
>>>
>>> BTW .. commflagging was definitely occuring as looking at the schedule there were
>>> numerous shows starting and finishing .....
>>>
>>> My strategy will be
>>>
>>> Immediately
>>> 1. schedule all jobs to after 1am ... there is very little recording happening
>>> then... (i assume this includes commflagging when a window for jobs is set?)
>>>
>>> When I get a chance to migrate cases..
>>>
>>> 2.  add another 1 recording drive .. to start (I have a spare 200GB IDE )
>>>
>>> 3. load test -- see what the limits are..
>>>
>>> depending on load test I may add another drive for recording or add another drive
>>> to the RAID for general storage...
>>>
>>> thanks again everyone. it's probably a few weeks before I get time to do this...
>>> but will post my results
>>>
>>
>>One linux software RAID optimization you can do is discussed in this
>>thread (look at the second post):
>>
>>http://forums.gentoo.org/viewtopic-t-673067-highlight-raid5.html
>>
>
>
> Thanks mate.. I'll try this one as part of my first stage.... you just reminded
> me to check if you've posted any updates to your overlay.. will do that tonight..
> or maybe remotely from work.. cheers
>
>
No mythtv updates in since July since I have been following JYA's patches.

John