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- Newsgroups: comp.os.msdos.programmer
- Path: sparky!uunet!gatech!destroyer!ubc-cs!newsserver.sfu.ca!sfu.ca!gay
- From: gay@selkirk.sfu.ca (Ian D. Gay)
- Subject: Re: Fast floppy writing techniques
- Message-ID: <gay.716251008@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University, Burnaby, B.C., Canada
- References: <BuFK8q.71s@DMI.USherb.CA>
- Date: Fri, 11 Sep 1992 22:36:48 GMT
- Lines: 12
-
- famus2@DMI.USherb.CA (Projet2 Famus) writes:
-
- >>>Hi, I was wondering if anyone has C code for fast file writing to floppies.
- >>>The application that I'm writing compresses the data before writing to disk,
- >>>but the bottleneck is the floppy. I'm currently trying to optimize disk
- >>>writing by using a technique similar to XCOPY, but if I had code that
- >>>resembled XCOPY already written that might help me meet my deadline.
- >
- You didn't say what compiler you were using, or how you were doing the
- writes. I have found stream i/o (fopen() etc) to go about 3x faster to
- floppies with Turbo C, using setvbuf() to set a 4k buffer, instead of taking
- the default. I would expect the gain to be less using open() and friends.
-