[mythtv] [mythtv-commits] Ticket #8962: playbackbox.cpp:extract_job_state() inefficient

Jean-Yves Avenard jyavenard at gmail.com
Fri May 8 04:18:28 UTC 2015

Potential for 0.27 backport prio 0.27.5 then?

On 8 May 2015 at 00:12, Lennart Sorensen <lsorense at csclub.uwaterloo.ca> wrote:
> On Thu, May 07, 2015 at 06:18:33AM -0700, Jim Stichnoth wrote:
>> On Wed, May 6, 2015 at 2:12 PM, Yeechang Lee <ylee at columbia.edu> wrote:
>> > Jim Stichnoth <jstichnoth@?> wrote on code.mythtv.org:
>> > >  This is essentially a cherry-pick of b43b11ca.
>> >
>> > Jim, thank you very much for your work on #8962. I am still on 0.26
>> > but your 0.27 backport applies to it, and on my older frontend makes a
>> > *very* noticeable difference when entering and, especially, scrolling
>> > through Watch Recordings. I have not noticed any delay from the
>> > background jobqueue reload.
>> That's good to hear!  I'm actually a bit surprised to hear that it makes
>> any substantial difference on *entering* the Watch Recordings screen, since
>> pretty much all that can be done there was done in #10161 which was in
>> 0.26.  An BTW, I think I have noticed a once-every-15-seconds flicker of
>> the screen while a recording listed on the screen is in-progress, but
>> likely the flicker was there before this change (but maybe more frequent).
> I applied the patch to my 0.27 frontend yesterday.  So far it seems
> to have made navigating around the recordings screen much much more
> responsive.  Previously it would often hang for seconds at a time when
> you moved to a new entry.
> I do run the connection between the frontend and backend over 802.11n
> 5GHz, and it is sometimes a bit flacky, but I frequently have been
> rebooting the machine just to get the menu response back to something
> sane.  And the frontend machine is a 6GB Core i7-920, so it is NOT under
> powered (the backend is more insanely overkill).
> So far the patch appears to be making a huge difference, but I will keep
> an eye on it for a few days to see if it has actually elliminated the
> degradation in menu performance that was happening after a few hours
> of use.
> --
> Len Sorensen
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