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- Newsgroups: comp.sys.sgi.bugs
- Path: sparky!uunet!mcsun!sun4nl!dutrun!donau!dutecai!reinoud
- From: reinoud@dutecai.et.tudelft.nl (R. Lamberts)
- Subject: Fix for 4.0.1 / 8M RAM slow disk writes
- Message-ID: <1992Dec24.013446.26848@donau.et.tudelft.nl>
- Originator: reinoud@dutecai.et.tudelft.nl
- Sender: news@donau.et.tudelft.nl (UseNet News System)
- Nntp-Posting-Host: dutecai.et.tudelft.nl
- Reply-To: reinoud@dutecai.et.tudelft.nl (R. Lamberts)
- Organization: Delft University of Technology, Dept. of Electrical Engineering
- Date: Thu, 24 Dec 1992 01:34:46 GMT
- Lines: 34
-
-
- OK guys, don't laugh. I still have 8 meg and IRIX 4.0.1,
- and was getting sick of the slow disk write bug. If you
- are in the same situation (8 meg / 4.0.1), this crazy
- fix may be of interest to you.
-
- It appears that doing a file system sync 20 times a second
- increases disk write speed enormously, without giving too
- much overhead. So compile something like this:
-
- main()
- {
- do
- {
- sync();
- sginap(5);
- }
- while (1);
- }
-
- (Please don't whine about this not being the best example
- of software engineering. ;-)
-
- If you use applications that write to disk at very high
- rates, you may try to decrease the sginap argument, but
- that results in a noticeable system load. Most tools
- run at maximum write speed with the code shown above.
-
- Run this thingy in the background and you'll actually start
- enjoying large cp or file un-tar actions...
-
- - Reinoud
-
-
-