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NextPVR Forums Public Add-ons (3rd party plugins, utilities and skins) Old Stuff (Legacy) GB-PVR Support (legacy) v
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Sloooooow channel switching...

 
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Sloooooow channel switching...
lif
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Posts: 155
Threads: 76
Joined: Dec 2004
#11
2005-01-12, 01:18 PM
I have ASUS Pundit-R with 2,93GHz Celeron D (model 340). 512MB RAM (PC3200) and SATA HDD. Solely dedicated to GBPVR! With WinTV 2k it takes about 1-2 sec to change channel, but in GBPVR in Live-TV it takes about 10 sec to change channel, this is extremely annoying! :-( Also in Config I've using 50ms as Live TV pre buffer. GBPVR version is latest stable (If I'm right version is 2312).

Any suggestions?
--- GBPVR system ---
Server: homemade (ASUS MB, AMD x2 5200+, 4G RAM, 3.2TB RAID5, 1Gbit) + DVB-T Hauppauge HVR1300 (h264 TS) + IPTV
Clients: ASUS Pundit-R (P4 3.2GHz Northwood!, 1G RAM, zero HDD - netboot, WinLIRC to use Hauppauge remote on system without Hauppauge devices) + IBM ThinkPad T42 (pvr over 802.11g) + FSC N560 WM6 (802.11g) + etc Smile
povarotti
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Posts: 70
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Joined: Dec 2004
#12
2005-01-12, 07:51 PM
[b Wrote:Quote[/b] (lif @ Jan. 12 2005,08:18)]I have ASUS Pundit-R with 2,93GHz Celeron D (model 340). 512MB RAM (PC3200) and SATA HDD. Solely dedicated to GBPVR! With WinTV 2k it takes about 1-2 sec to change channel, but in GBPVR in Live-TV it takes about 10 sec to change channel, this is extremely annoying! :-( Also in Config I've using 50ms as Live TV pre buffer. GBPVR version is latest stable (If I'm right version is 2312).

Any suggestions?
i have a very similar setup to you, and have noted the same huge delays when channel changing. i posted something to this effect in another thread (Service Priority). my system is an asus pundit-r, dedicated to gbpvr, with a p4 celeron d 2.66, 512 MB ram (PC3200) and a sata hd. i was experiencing, on average, 10 second delays when channel changing. in task manager, i noticed cpu spikes (to 100% cpu usage) during channel changes, so i took it upon myself to change the priority of the gbpvr app.

at first, i decided to give a higher priority (AboveNormal)...this was even worse. the pc became essentially unusable, and the first (and only) channel change basically froze my computer. so then i tried BelowNormal, and that works much better. when running at BelowNormal priority, i now average about 3 seconds for channel change. per Huw's instructions in the previously mentioned thread, i have a batch file that launches the gbpvr app at BelowNormal priority at startup.

hth,
pov.



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#13
2005-01-16, 03:32 AM
I think Disk I/O is a common bottle neck.... i couldnt even get the LiveTV button to work until I switched the live buffer over to a seperate SCSI disk. Then everything started working better.
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