[mythtv-users] Playback problem -- random short pauses

[Steven Adeff]

On Wed, Jul 6, 2011 at 4:09 PM, Kenneth Emerson
<kenneth.emerson at gmail.com> wrote:
>> > Last Friday I switched from .24-fixes to master and I have yet to
>> > experience
>> > any of the pauses I was complaining about.  I'll give it another week
>> > and
>> > report back, but this is the best experience with playback I have had in
>> > about six months.
>> >
>> > -- Ken E
>>
>> Ken, any updates on the three playback issues while running from trunk?
>>
>> --
>> SteveThe issue isn't nearly as bad as it was when I was on 24-fixes
>> (caveat: there have been many backports of changes made from master to
>> 24-fixes that I have not tested).
>> Almost all pauses that I see now (but not all) occur when a recording is
>> starting or ending.  The pause is very short (one second or less).  There
>> are occasional (guessing once for every 3 or 4 hours of watching recordings)
>> pauses that don't coincide with other recordings starting/stopping.  They
>> are also very short in duration.  I've never seen a correlation between the
>> random pauses and high disk or CPU activity.
>> I'm not sure I can give you accurate information (regarding the original
>> problem) since I have since changed my hardware configuration significantly.
>>  My cpu went from a quad-core 2.6gHz to a quad-core 3.3gHz.  I changed my
>> recording drive from LVM on four 1TB drives in a RAID5 configuration to 5
>> 1TB drives in a RAID6 configuration. My  motherboard is different (still
>> Asus).
>> In my opinion, this shouldn't have affected the problems I was seeing, but
>> it adds confusion.
>> You can notice the pauses but they are not so distracting as to cause
>> complaints (WAF back to normal, acceptable levels ;-) )
>> -- Ken E.

yea, if the changes are indeed due to VDPAU none of that would make
difference, except maybe for the start/end of recordings hiccups.
doesn't sound like the dev's have nailed down what's causing it yet
though.

thanks for the update!

is there a reason you're not using storage groups for your recording
drives? (I ask because I ran RAID5 across 6 disks and when I went to
storage groups instead I noticed a substantial decrease in my i/o wait
times and a perceived increase in speed).

-- 
Steve
http://www.mythtv.org/wiki/User:Steveadeff
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