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From: bbaker@na.novell.com (Brad Baker)
Newsgroups: comp.os.os2.misc,comp.os.os2.programmer
Subject: Efficiency of DosDevioctl
Message-ID: <2441@excelan.COM>
Date: 30 Nov 90 17:50:34 GMT
Sender: news@excelan.COM
Reply-To: bbaker@na.novell.com (Brad Baker)
Followup-To: comp.os.os2
Organization: Novell, San Jose, CA.
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I have a question for the gurus up at Microsoft (Letwin?).

If one was to create a callgate entry point in the fast-path of 
a protocol stack, say the Netbios driver's entry point,    
what kind of throughput increase, if any, could we see?

I have no idea what the kernel may be doing during a DevIOCtl
call, save fuct. and cat. demuxing and ring transition.       


Inquiring minds want to know.

Brad Baker
bbaker@novell.com