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- Path: sparky!uunet!nwnexus!remote!UUCP
- From: Dave.Deavours@f303.n232.z1.fidonet.org (Dave Deavours)
- Newsgroups: comp.os.linux
- Subject: Question about ISA/IDE disk throughput (pc newbie)
- Message-ID: <726137676.AA29980@remote.halcyon.com>
- Date: Tue, 29 Dec 1992 13:37:36 -0800
- Sender: UUCP@remote.halcyon.com
- Lines: 26
-
- SC> Umm...Sorry to burst your bubble, but... I have a ISA bus 486/33
- with
- SC> a generic (read $20) IDE & I/O board controlling a Seagate ST3283A.
- I
- SC> have achieved peak transfer rates of 1250KB/sec. The iozone
- benchmark
- SC> under linux (with a Minix partition) consistently does 550KB/sec
- writes
- SC> and about 640KB/sec reads. Ofcourse, I run my I/O bus at 11MHz
- instead
- SC> of the standard 8MHz but 200KB/sec is too low. A caching
- controller
- SC> with lots of memory will probably do much better, but you are
- better
-
- Isn't that benching the cache speed? I think the actual memory <-->
- disk transfer is still at ~500K/sec. Would the same benchmark give the
- same results without the cache? While the effective transfer rate is
- really that high--1250KB/sec peak-- the actual disk<-->memory transfer
- is far lower, the difference attributed to the chache performance.
-
- Dave
-
-
- * Origin: PBS BBS Node 3 (1:232/303)
-
-