[mythtv-users] hard drive read benchmarks

Jesse Dhillon tobor at berkeley.edu
Tue Dec 19 07:13:37 UTC 2006


Henry A Harper III wrote:
> Mythfrontend showing NBC SNF HD @1.5x speed, no recordings active:
> /dev/sda:
>  Timing cached reads:   2604 MB in  2.00 seconds = 1302.30 MB/sec
>  Timing buffered disk reads:  214 MB in  3.01 seconds =  71.15 MB/sec
>
> Mythfrontend idle in root menu (Iulius theme):
> /dev/sda:
>  Timing cached reads:   3480 MB in  2.00 seconds = 1740.60 MB/sec
>  Timing buffered disk reads:  230 MB in  3.02 seconds =  76.11 MB/sec
>
> Box is mythtv 0.20 (svn 11166) FE+BE, FC5 smp, Athlon 4600+ x2 (65W), 1GB
> RAM, 2x SATA2 Seagate 750GB (SW RAID1, LVM), 3x hd5500 set up for OTA ATSC
> only, 7600gs w/8774. Mobo is a Gigabyte GA-M55plus-S3G

Henry, which chipset is on your mobo? Also, were you able to enable DMA 
on your SATA drives? I have no idea how/whether it can be enabled. As 
you can see, my performance drops drastically when I am watching TV.

Jesse.


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