Date: Thu, 22 Aug 1996 09:17:10 -0700 From: Darryl Okahata <darrylo@hpnmhjw.sr.hp.com> To: Glen Foster <gfoster@gfoster.com> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: SCSI again: Asus SC200 vs. Adaptec 2940 ... Message-ID: <9608221617.AA29219@hpmwtd.sr.hp.com> In-Reply-To: Your message of "Thu, 22 Aug 1996 08:50:50 EDT." <199608221250.IAA02195@tbd.gfoster.com>
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> A couple of data points with Adaptec 2940s:
>
> ***** Bonnie:
> -------Sequential Output-------- ---Sequential Input-- --Random--
> -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
> Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
> P166 100 1414 23.8 1356 5.1 700 4.3 1736 27.5 2081 7.7 42.7 1.9
Well, if we're including "slow" disks, here are a few more
benchmarks on my NCR/Symbios 815-based controller:
-------------------------------------------------------------------------------
***** Bonnie:
-------Sequential Output-------- ---Sequential Input-- --Random--
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks---
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
PCI/Q4.0 256 3350 66.8 3387 14.8 2027 15.9 4671 90.0 6065 24.6 87.5 4.1
PCI/1280 256 4267 86.3 4393 19.2 1207 8.3 4118 77.9 4620 17.8 56.8 2.5
PCI/L730 200 2639 52.1 2594 11.0 933 6.1 2417 45.6 2564 9.8 46.4 2.0
***** IOZONE:
Read Write
PCI/Q4.0 6176476 3464032
PCI/1280 4724936 4276790
PCI/L730 2823778 2757160
-------------------------------------------------------------------------------
Where:
"PCI/Q4.0" refers to a 4GB Quantum Atlas (34300S). 7200RPM,
8.5ms seek (not access).
"PCI/1280" refers to a 1.2GB Quantum Fireball 1280. 5400RPM,
12ms seek (not access).
"PCI/L730" refers to a 700MB Quantum Lightning 730. 4500RPM,
11ms seek (not access).
All of these were done on the same system:
P133
Asus P55T2P4 motherboard w/512K PB cache
64MB 60ns parity FPM DRAM
DTC 3130B SCSI controller (815-based)
2.2-snap-080196
-- Darryl Okahata
Internet: darrylo@sr.hp.com
DISCLAIMER: this message is the author's personal opinion and does not
constitute the support, opinion, or policy of Hewlett-Packard, or of the
little green men that have been following him all day.
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