[mythtv-users] Terrible drive performance on frontend

[John Drescher]

>
> > The bottom number is not bad considering that your drive is a 3 to 4
> > year old model. The top number is the one I would worry about. 164
> > MB /s is absolutely abysmal for any current computer. I get 10 to 20
> > times that on my mythbox. What are your system specs?
> >
> > John
>
> It's an AMD 1400+, 1 GB RAM. Motherboard is a K7SEM+, I think. (might be
> K7SOM). This PC definitely has not had these issues before.
>
> Anything else?
>
>
Sorry, this is so bad I am not sure what to suggest. In my department we
have a 10 year old P2 box that gets a better score on the first number:

dns pri # hdparm -tT /dev/hda

/dev/hda:
 Timing cached reads:   420 MB in  2.00 seconds = 209.51 MB/sec
 Timing buffered disk reads:   38 MB in  3.03 seconds =  12.55 MB/sec
dns pri # cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 5
model name      : Pentium II (Deschutes)
stepping        : 2
cpu MHz         : 350.850
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov
pat pse36 mmx fxsr
bogomips        : 692.22



I know your system is many times faster than that as we do have a lot of
athlons in our department. My problem with the first hdparm score is this
has more to do with system performance (cpu / memory) than raw disk
performance. If your numbers were off by a few percentage points I would
suggest removing your memory so that you had only 1 dimm installed as
running multiple double sided dimms on a lot of motherboards slows down the
memory timings but it can't be this much.

John
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