[vdr] [ANNOUNCE] improved LIRC remote for VDR-1.5.12
rnissl at gmx.de
Sat Jan 12 14:23:30 CET 2008
Ville Skyttä schrieb:
>> I think, the LIRC protocol misses a timestamp for each button
>> press. Or an even more favorable solution would be to put the
>> timeout and frequency processing into LIRC and have VDR to
>> process each key as it arrives, just like with the KBD remote.
> Would using liblirc_client instead of the current "homebrew" implementation
> help out with this?
When liblirc_client uses the same interface of lircd, then I
don't think that it will help.
> Also, somewhat off topic: when running powertop on my VDR box, I see lircd
> waking up the CPU from idle about 1000 times a second while VDR is connected
> to it:
> Top causes for wakeups:
> 54.3% (988.1) lircd : schedule_timeout (process_timeout)
> 28.5% (518.4) vdr : futex_wait (hrtimer_wakeup)
> I already tried adding some cCondWait::SleepMs's to VDR's lirc action loop but
> it didn't seem to have any effect. Any ideas whether this is something that
> VDR could do anything about, or if it's a LIRC internal thing?
Well VDR's lirc action loop uses a timeout only when it needs to
generate a keyup event after a key repeat event. Otherwise it
blocks in cFile::FileReady's select() until a button gets pressed
on the remote.
Try running irw instead of VDR and check powertop again.
Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl at gmx.de
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