Article View: comp.os.os2
Article #57Re: OS/2, real-time, question
From: bnathan
Date: Tue, 31 Oct 1989 15:31
Date: Tue, 31 Oct 1989 15:31
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1568 bytes
In article <864@metaphor.Metaphor.COM> philf@xymox.metaphor.com (Phil Fernandez) writes: >First, there's little information about system performance, either in >documentation or through developers' tools. AMEN (do it yourself. Don't ask, I can't give it out.) >or inter-tread communication, etc. Also, it's difficult to understand >"second order" effects, e.g., what's the effect on performance of >creating one more thread. DITTO >Second, some key services are slow -- thread creation among them. So, >in applications that depend on "cheap" threads, OS/2 is perhaps not a >great idea. I believe threads are cheaper than UNIX processes (though I may be proved wrong by REAL experts), and for the times when I needed a quick thread, I just "pre-created" it and made it wait on a ram-semaphore. Clearing a ram semaphore gets an existing thread going real quick. -bob (Standard disclaimer: I said "I", not "WE") r.nathan@Atlanta.NCR.COM (404)441-8143 5555 Oakbrook #140; Norcross GA 30093
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!ncrlnk!ncratl!scotty!bnathanReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!cs.utexas.edu!uunet!ncrlnk!ncratl!scotty!bnathan From: bnathan@scotty.Atlanta.NCR.COM (bnathan) Newsgroups: comp.os.os2,comp.realtime Subject: Re: OS/2, real-time, question Keywords: OS/2, real-time, question Message-ID: <1033@scotty.Atlanta.NCR.COM> Date: 31 Oct 89 15:31:41 GMT References: <34689@beta.lanl.gov> <1028@ncratl2.Atlanta.NCR.COM> <864@metaphor.Metaphor.COM> Reply-To: r.nathan@Atlanta.NCR.COM Distribution: usa Organization: NCR Corporation, E&M Atlanta Lines: 18