[vdr] LVM not fast enough?

[Lauri Pesonen <lauri.pesonen@firsthop.com>]

Hi,

I tried searching the archives, but all I got were positive experiences
with LVM :-/

I got a new IBM 60GB disk and decided to add it to my existing VDR
installation with LVM enabled so that I could add more disks easily in
the future. Everything went fine after having some trouble with devfs
and symlinks and I moved my existing recordings to the newly created LVM
logical volume. 

To make sure everything worked fine, I tried doing two recordings at the
same time. The result was that the ringbuffers kept over flowing and VDR
restarded itself. Also, when I tried replaying an existing recording the
replay was not smooth the way it should be and it contained audio
glitches. 

Based on other people's posts, LVM seems to be useable with VDR. So is
it a CPU issue then, I'm running my VDR on a K6-2/300? Any comments? 

vdr root # hdparm /dev/hdc

/dev/hdc:
 multcount    = 16 (on)
 I/O support  =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    = 32 (on)
 geometry     = 119150/16/63, sectors = 120103200, start = 0
 busstate     =  1 (on)
vdr root # hdparm -Tt /dev/hdc

/dev/hdc:
 Timing buffer-cache reads:   128 MB in  4.20 seconds = 30.48 MB/sec
 Timing buffered disk reads:  64 MB in 21.32 seconds =  3.00 MB/sec

br, Lauri