[Asterisk-Dev] Seeking advice on choppy demo voice issue.

[Bruno Hertz]

OK, I'm coming to think this is a 2.6.8-1 kernel issue. As said, I have
Debian Sarge and FC3 on one machine, where Debian behaves badly. Now,
after booting Debian, I mounted the FC3 partition and chrooted into it.
And guess what, asterisk running in this chroot gives choppy sound too,
while running alright on the FC3 kernel.

I'd rather go and file this on the Debian list.

Regards, Bruno.


On Sun, 2004-12-19 at 23:20 +0100, Bruno Hertz wrote:
> On Sun, 2004-12-19 at 14:15 -0600, Steven Critchfield wrote:
> 
> > It just occurred to me that debian doesn't by default tune up your
> > harddrive. You might want to use hdparm and verify you have DMA and 32
> > bit turned on. if not it is options -c1 and -d1.
> 
> Good pointer, but I already checked that. I'm running a 2 disk RAID1
> setup actually, and one of my first ideas was that throughput might
> be bad.
> 
> Anyway, Debian per default enabled dma on both disks, and I then enabled
> 32bit IO, too. Changed nothing though.
> 
> Can't say if the raid layer adds to this, but I guess that shouldn't be
> a bottleneck.
> 
> # hdparm -tT /dev/hda
> 
> /dev/hda:
>  Timing cached reads:   360 MB in  2.00 seconds = 179.85 MB/sec
>  Timing buffered disk reads:   88 MB in  3.03 seconds =  29.04 MB/sec
> 
> and similar for hdc.
> 
> Especially the cached reads aren't that great, but it should suffice
> and, as said, the same hardware works flawlessly with FC3.
> 
> Thanks, Bruno.
> 
> 
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