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- Newsgroups: comp.os.linux
- Path: sparky!uunet!microsoft!wingnut!satishc
- From: satishc@microsoft.com (Satish Chittamuru)
- Subject: Re: Question about ISA/IDE disk throughput (pc newbie)
- Message-ID: <1992Dec30.080654.24811@microsoft.com>
- Date: 30 Dec 92 08:06:54 GMT
- Organization: Microsoft Corporation
- References: <dmw.724992752@teal>
- Lines: 40
-
- In article <dmw.724992752@teal> dmw@teal.csn.org (Dave Warner) writes:
- >
- > [stuff deleted]
- >
- > My experience differs.
- > Here's an iozone benchmark on a Gateway dx2-66v, 8MB ram with
- > local bus and a WD IDE drive (Pirhana, I think) with linux.0.99 -- output
- > from 'free' included to show cache size:
-
- Is the IDE controller on the local bus or on the ISA bus? Also what's the
- drive speed (RPM or rotational latency and track-to-track seek time). If
- it is an ISA controller, could you let me know the name of the controller
- board? Thanks..
-
- > [more stuff deleted]
- >
- > IOZONE writes a 16 Megabyte sequential file consisting of
- > 32768 records which are each 512 bytes in length.
- >
- > Writing the 16 Megabyte file, 'iozone.tmp'...22.610000 seconds
- > Reading the file...17.770000 seconds
- >
- > IOZONE performance measurements:
- > 742026 bytes/second for writing the file
- > 944131 bytes/second for reading the file
-
- Hmm. These number are really good. Beats mine by quite a margin
- (550000 and 640000 respectively). My ISA/IDE controller is a generic one
- (The 'manual' says it is an AB-757; doesn't say who manufactures it).
- Are there better controller on the market? If so, could someone lemme
- know which ones are good? The above figures are on a 11MHz bus. Increasing
- it to 13MHz drops (yes, drops) the performance by about 200000 bytes/sec.
-
- > | Dave Warner | e-mail: dmw@csn.org |
- > | 151 Sky Trail Road | USWest: 443-9589 |
- > | Boulder, CO 80302 | FAX: 443-6791 |
-
-
- --
- Satish K. Chittamuru satishc@microsoft.com
- =====
- Disclaimer: The opinions expressed herein, either stated or implied, are
- solely my own and do not reflect Microsoft's views in any manner.
-