[mythtv-users] 8 seconds to change channel on a PVR350? normal
cedelis at uillinois.edu
Mon Mar 8 10:02:24 EST 2004
On Mon, Mar 08, 2004 at 07:49:34AM -0500, jose rubio wrote:
> On Sun, 2004-03-07 at 00:38, Darren Richards wrote:
> > > I know this issue has been beaten to death so many times that it's not
> > > funny, but I just wanted to ask if a 7-8 second delay is normal for
> > > changing channels on a PVR350? Reading the archives make me believe it
> > > should be in the 2-3 seconds range... but I also find (like many others)
> > > that I simply cannot fast-forward to any point further than 4-5 seconds
> > > behind real time, which I assume is the cause of the first problem and
> > > also a safety delay for software encoders. If so, is this changeable
> > > somewhere in the settings, or defined in a header file somewhere?
> > >
> > > Of major importance here is that the 350 is hooked directly to my analogue
> > > cable, so there's no delay for external tuners.
> > >
> > > This is all on v0.14 BTW. Simply haven't had enough free time from
> > > work'n'stuff to even attempt the CVS yet. :)
> > >
> > > Also, I just read in the archives (which is a goldmine with well-hidden
> > > nuggets) that switching from ext3 (which I currently use) to f.x. ReiserFS
> > > can make a big difference here, as well as save quite a few bytes on the
> > > /mnt/myth/store partition... which will have to wait until tomorrow since
> > > it's currently 3 in the morning and experience tells me not to change
> > > filesystems on 140GB partitions when the brain is not all there. =)
> > >
> > > Sorry for rambling on, but maybe all of this can be helpful for someone
> > > else...
> > >
> > > / Niklas
> > 7-8 seconds seems a little long. I recently switched from using the pvr350
> > tv-out to a gf4mx tv-out. I'm still using the 350 for capture. With the
> > 350 tv-out, changing channels took 4-5 seconds. Now it takes about 2
> > seconds. I'm using ext3.
> > -darren
> > ----
> yeah, i don't think it's the filesystem. i've used ext2 and now ext3
> with both a 250 and a 350 together using the 350 tv-out and my channel
> change time is always been about 2-4 seconds. I run myth-cvs though...
I just switched from an ext3 filesystem to xfs and don't really notice any difference.
Maybe I need to tune it differently? (I went with the default settings).
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