[3701] in linux-scsi channel archive
Re: ncr53c8xx-2.6 feature freeze. Need testers.
daemon@ATHENA.MIT.EDU (Gerard Roudier)
Wed Apr 15 17:19:40 1998
Date: Wed, 15 Apr 1998 22:17:42 +0200 (MET DST)
From: Gerard Roudier <groudier@club-internet.fr>
To: "Larry M. Augustin" <lma@varesearch.com>
cc: linux-scsi@vger.rutgers.edu
In-Reply-To: <199804101747.KAA08514@cray.varesearch.com>
Hello Larry,
Thanks a lot for sending us your first results with Ultra2.
I just made available 2.6i-to-2.6j ncr53c8xx driver patch.
I did fix 2 bugs in 2.6i, incorporate PPC and SPARC changes and ...
my personal changes for 2.1.9X/SMP in 2.6j ;-).
On Fri, 10 Apr 1998, Larry M. Augustin wrote:
> Gerard,
>
> Here are first-cut numbers with Bonnie and Iozone with the '895 and
> Atlas III running at 80MB/sec.
>
> Mem: 62852K av, 25992K used, 36860K free, 2444K shrd, 17140 buff
> Swap: 130748K av, 0K used, 130748K free
>
> Bonnie --------Sequential Output---------- ---Sequential Input---- ---Random--
> -Per Char-- ---Block--- --Rewrite-- -Per Char-- ---Block--- ---Seeks---
> Directory MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> /u1/tmp 244 8972 93.4 9226 23.3 3704 17.0 11442 81.8 12633 19.9 85.3 2.4
> /u1/tmp 244 8880 92.8 9501 24.5 3714 18.2 11194 78.7 12630 20.1 85.6 4.6
> /u1/tmp 244 8848 92.0 9602 24.9 3689 17.1 11139 79.0 12604 18.9 88.2 6.9
> /u1/tmp 244 8811 92.2 9278 24.0 3726 18.3 11365 80.5 12649 19.8 85.0 9.4
> /u1/tmp 244 8900 92.9 9552 24.9 3750 18.1 11211 80.2 12615 20.7 85.6 11.7
> Average 244 8882 92.7 9431 24.3 3716 17.7 11270 80.1 12626 19.9 86.0 7.0
Reads are significantly faster than writes. With the Atlas II they are
very similar using Bonnie.
> Iozone Size Rec Length Read Rate Write Rate
> Directory Mbytes bytes Kbytes/sec Kbytes/sec
> /u1/tmp 244 512 11477.08 11254.77
> /u1/tmp 244 512 11341.62 11055.58
> /u1/tmp 244 512 11254.77 11367.42
> /u1/tmp 244 512 11300.59 11011.72
> /u1/tmp 244 512 11259.85 11139.37
> /u1/tmp 244 512 11239.59 11119.54
> /u1/tmp 244 512 11305.70 11099.78
> /u1/tmp 244 512 11487.63 11055.58
> Average 244 512 11333.35 11137.97
More that 11 MB/sec sustained data rate. Quite good for a 7200 rpm HD.
> This is using driver 2.6i on a Pentium-II 266MHz system. No problems
> so far. I want to try multiple drives simultaneously next, and then
> try the dual 400MHz PII to see what difference the CPU speed makes. I
> also have the Ultra2 Cheetahs to test.
I am very interested in results using this beast. Should be interesting
to run benchmarks on the both disks at the same time.
Would suggest linux-2.1.96 SMP + latest driver 2.6j using 32 tags.
Regards,
Gerard.
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