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- Path: sparky!uunet!utcsri!bonnie.concordia.ca!IRO.UMontreal.CA!thomas
- From: thomas@IRO.UMontreal.CA (Steve Thomas)
- Newsgroups: comp.unix.internals
- Subject: UNIX i/o
- Summary: bad port
- Keywords: implementation, pipes
- Message-ID: <thomas.711732794@iros1>
- Date: 21 Jul 92 15:33:14 GMT
- Sender: news@IRO.UMontreal.CA
- Organization: Universite de Montreal
- Lines: 18
-
- We are working with a port of SVR4 to a multiprocessor
- machine. It appears that i/o transfers from devices
- to memory are handled by a process (i/o daemon)
- which employs pipes.
-
- Needless to say this eats up about 66% of one cpu and
- appears to be quite wasteful. Since I do not know
- much about UNIX internals, we would be most interested
- in how i/o could best be done (i.e. in the kernel).
-
- (Disclaimer: The manufactuer did the UNIX port and we
- are simply trying to figure out how to fix this obvious
- problem.)
-
- thanks in advance
- Steve
- --
- internet: thomas@kovic.iro.umontreal.ca
-