[mythtv-users] Lag while browsing over network?

Steven Adeff adeffs.mythtv at gmail.com
Wed Mar 14 21:35:03 UTC 2007


On 3/14/07, Josh <TwoOneSix at thatclothingco.com> wrote:
> Steven Adeff wrote:
> > On 3/12/07, Josh <TwoOneSix at thatclothingco.com> wrote:
> >
> >> William Pettersson wrote:
> >>
> >>> So, I've recently implemented my latest remote frontend (connected to
> >>> 27" LCD TV, finally my first frontend that is only a myth frontend).
> >>> However, I feel that the frontend is laggy.  That is, if I'm browsing
> >>> through the menus (just menus, and any menu from file browsers to
> >>> setting up videos), everything has a 1-2 second lag.  Videos play fine
> >>> over my network (100mbit), and I've tested it and can sustain 10.2MB/s.
> >>> It's an AMD Athlon(tm) XP 2600+ with 256MB of RAM.  I'll admit it's a
> >>> bit low on RAM, but it's currently (idling since I'm at work) and using
> >>> just on 93MB
> >>>
> >>> enigma at mythbox ~ $ free -m
> >>>               total       used       free     shared    buffers    cached
> >>> Mem:           249        154         95          0          4        56
> >>> -/+ buffers/cache:         93        156
> >>> Swap:          980        325        654
> >>>
> >>> As to hard drive speeds, I get the following
> >>> mythbox enigma # hdparm -tT /dev/hda
> >>>
> >>> /dev/hda:
> >>>   Timing cached reads:   1476 MB in  2.00 seconds = 736.31 MB/sec
> >>>   Timing buffered disk reads:  102 MB in  3.05 seconds =  33.49 MB/sec
> >>>
> >>> Not magnificent, but decent enough (I'd think) for running mythtv.
> >>>
> >>> The only slightly degraded performance factor that I can see is the
> >>> video card, which is a 9600Pro running on the open-source Radeon drivers
> >>> (ATI ones are crashing as usual for me).
> >>>
> >>> So, anyone know of any reason why this frontend would have slight lag
> >>> while navigating menus?  My other frontend that is on the 100mbit
> >>> network is noticably faster, and the only main differences are that is a
> >>> beefier machine.  Any ideas?
> >>>
> >>>
> >>> Also, anyone have a script that can take "screenshots" of movies, then
> >>> set the screenshots as covers?  I've got a bunch of video clips (music
> >>> videos) that I'd like to do this too.
> >>>
> >>>
> >>> William
> >>>
> >>>
> >> I actually have a similar issue, only in reverse... the beefier machine
> >> is the one with the lag. Both are connected at 1000/full to the same 8
> >> port GB switch. One is a Dell and the other is a VIA, the VIA lags and
> >> the Dell doesn't... neither are running a backend. I guess I have just
> >> learned to deal with it... my NFS and MySQL settings are "optimal" so
> >> it's a weird (not crippling) issue... I'll follow this thread and hope
> >> you figure something out.
> >>
> >>
> >
> > I just noticed my main frontend menu was slow due to logging being
> > done in the backend. I lowered the amount of logging going on and the
> > menu sped up. for some reason it never affected the frontend in my
> > bedroom.
> >
> > it also got live TV working on both again...
> >
> >
> Where/How did you disable the logging?

its in my init.d launch script. its part of the command line used to
launch mythbackend.

-- 
Steve
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