Re: 3ware IDE Raid. SCSI killer?

[ Available lists | Index of freebsd-chat | Month of Aug 2000 | Week of 11 Aug 2000 | Raw email | View thread | Wrap long lines | Reply | Tag ]
From
Brad Knowles <blk@skynet.be>
Date
11 Aug 2000 04:10:58
Subject
Re: 3ware IDE Raid. SCSI killer?
Message-ID
v04220806b5b984967c40@[195.238.1.121]

In reply to
References to

[ Hide this part ]
At 3:26 AM +0000 2000/8/11, Mike Tancsa wrote:

> ------Sequential Output-------- ---Sequential Input-- --Random--
> Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> 300 18638 97.0 36388 73.0 11448 26.0 13001 98.6 46468 45.3 341.9 4.0
> 300 17829 93.8 18565 32.7 8792 20.3 12535 95.4 22437 21.2 200.6 2.2

These numbers don't look particularly impressive to me -- look at
how much CPU you're chewing up, and how little benefit there is.

> First is RAID0, second is the same drive on the Intel PIIX4 ATA33
> controller by itself.

In that case, these numbers do not look at all impressive.

--
These are my opinions -- not to be taken as official Skynet policy
======================================================================
Brad Knowles, <blk@skynet.be> || Belgacom Skynet SA/NV
Systems Architect, Mail/News/FTP/Proxy Admin || Rue Colonel Bourg, 124
Phone/Fax: +32-2-706.13.11/12.49 || B-1140 Brussels
http://www.skynet.be || Belgium

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, Historical Review of Pennsylvania.


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-chat" in the body of the message



Elapsed time: 0.061 seconds