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Text File  |  1992-11-22  |  844 b   |  22 lines
  1. Newsgroups: comp.sys.next.sysadmin
  2. Path: sparky!uunet!decwrl!parc!mdixon
  3. From: mdixon@parc.xerox.com (Mike Dixon)
  4. Subject: Re: SUMMARY: cpu usage of unused but enabled serial port
  5. Message-ID: <mdixon.722483881@thelonius>
  6. Sender: news@parc.xerox.com
  7. Organization: Xerox PARC
  8. References: <1992Nov17.142613.27644@news.th-darmstadt.de> <1992Nov18.110002.17869@pilhuhn.ka.sub.org>
  9. Date: 23 Nov 92 01:58:01 GMT
  10. Lines: 10
  11.  
  12. hwr@pilhuhn.ka.sub.org (Heiko W.Rupp) writes:
  13.  
  14.     [ ... ]
  15.  
  16. you've misunderstood the original posting.  the problem isn't that serial
  17. port communications generate interrupts and consume cpu time when they're
  18. being used; it's that they generate interrupts and consume *more* cpu time
  19. when they're not being used (under some circumstances; see my previous
  20. posting for details).
  21.                                              .mike.
  22.