Is this good software raid performance for a
Dual celeron 500 mhz
128 mb ram
abit bp6 mb
using the htp66 controller in dma 33 mode
2 x 18 gig ibm dma 33 drives
Running kernel 2.2.13ac1, big ide patch (latest as of today), 2.2.14pre1
as well..
Its a raid 1 mirror with each disk alone on its own ide channel (one 3,
one 4). OS is on a different drive and controller.
-------Sequential Output-------- ---Sequential Input----Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block----Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
400 7644 98.3 15585 23.1 7000 21.1 7861 92.5 17368 12.4 145.4 3.2
> hdparm -Tt /dev/md0
/dev/md0:
Timing buffer-cache reads: 64 MB in 0.85 seconds =75.29 MB/sec
Timing buffered disk reads: 32 MB in 1.87 seconds =17.11 MB/sec
I can understand the write performance but I would think the read
performance would be better given that it should be reading from both
halves of the mirror? I am using a 4096 block size on these drives
if that helps. Basically I will be storing a lot of big files,
database..etc. Any tuning suggestions? Basically looking for the
MAXimum performance out of this thing. I am sure more ram will
help which is my next purchase.
Thanks, Mike
--
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