Re: How to improve db performance with $7K?

Yeah, 35Mb per sec is slow for a raid controller, the 3ware mirrored is
about 50Mb/sec, and striped is about 100

Dave

PFC wrote:

>
>> With hardware tuning, I am sure we can do better than 35Mb per sec. Also
>
>
> WTF ?
>
> My Laptop does 19 MB/s (reading <10 KB files, reiser4) !
>
> A recent desktop 7200rpm IDE drive
> # hdparm -t /dev/hdc1
> /dev/hdc1:
> Timing buffered disk reads: 148 MB in 3.02 seconds = 49.01 MB/sec
>
> # ll "DragonBall 001.avi"
> -r--r--r-- 1 peufeu users 218M mar 9 20:07 DragonBall
> 001.avi
>
> # time cat "DragonBall 001.avi" >/dev/null
> real 0m4.162s
> user 0m0.020s
> sys 0m0.510s
>
> (the file was not in the cache)
> => about 52 MB/s (reiser3.6)
>
> So, you have a problem with your hardware...
>
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>

--
Dave Cramer
http://www.postgresintl.com
519 939 0336
ICQ#14675561