JuNix
Apprentice
Joined: 05 Mar 2003
Posts: 226
Location: Sheffield
|
 Posted: Mon May 22, 2006 11:56 am Post subject: Determine optimum chunk size for md raid 0? |
 |
|
Hi,
I have 2 relatively speedy SATA drives making a 300Gb software raid0. I have always wondered if this is set up as optimally as possible, because of the large on board cache on the drives. Is a 32k chunk size optimal I wonder, and if not, how could I find out otherwise?
| Code: | # mdadm --detail /dev/md3
/dev/md3:
Version : 00.90.03
Creation Time : Sun Jun 20 05:26:57 2004
Raid Level : raid0
Array Size : 299017600 (285.17 GiB 306.19 GB)
Raid Devices : 2
Total Devices : 2
Preferred Minor : 3
Persistence : Superblock is persistent
Update Time : Sun Jun 20 05:26:57 2004
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
Chunk Size : 32K
UUID : 72ede46d:b829ea98:0034b740:54d187cc
Events : 0.1
Number Major Minor RaidDevice State
0 8 4 0 active sync /dev/sda4
1 8 20 1 active sync /dev/sdb4 |
Thanks  |
|
Kernel & Hardware
