On Tue, 2 Mar 1999, David Mansfield wrote:
> I am concerned that these stats for bonnie are in fact pretty poor for the
> hardware involved. Could someone running SW RAID5 on similar hardware
> comment on your bonnie findings?
>
> I have a DAC960:
>
> DAC960: ** DAC960 RAID Driver Version 2.2.0 Beta4 of 13 January 1999 **
> DAC960: Copyright 1998-1999 by Leonard N. Zubkoff <[EMAIL PROTECTED]>
> DAC960#0: Configuring Mylex DAC960PG PCI RAID Controller DAC960#0:
> Firmware Version: 4.06-0-00, Channels: 2, Memory Size: 8MB DAC960#0: PCI
> with 6 UW Quantum Viking II 4.5GB drives, three on each channel,
> configured (by VA Research) into a Raid5 volume. The system is a dual PII
> 450Mhz, running linux kernel 2.2.2 (a RedHat 5.1 + upgrades system), with
> -------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
> 500 3742 46.8 4623 6.7 2604 7.9 6614 72.9 13314 14.6 183.4 3.2
That does seem kind of slow for the given hardware. I've seen much better
numbers posted from the DAC960PJ, which I think is "top of the line" for
Mylex while the PG is the next step down. I wonder if increasing the
controller RAM (8mb seems skimpy compared to the rest of the system) would
help or if there's any other tuning that can be done on the Mylex.
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