Re: Dell Perc 5/i Performance issues

From: Chuck Swiger <cswiger_at_mac.com>
Date: Thu, 17 Jun 2010 16:55:31 -0700
On Jun 17, 2010, at 4:50 PM, oizs wrote:
> I've bought a Dell Perc 5/i because I couldn't make the onboard marvell 88sx7042 work with 8.0/8.1 or current, but as lucky as I am, the best I can do with 4x1.5tb samsung in raid5 is 60MB/s writes and 90MB/s reads, with bbu/write-back/adaptive-read-ahead.
> 
> I was expecting at least twice of that, and I'm not sure what can I do to get that speed. (I've read man 7 tuning with no success)

Switch to using RAID-10 rather than RAID-5.  It's normal for RAID-5 to have worse write performance than that of a single drive.

Regards,
-- 
-Chuck
Received on Thu Jun 17 2010 - 21:55:32 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:04 UTC