Date: Sat, 25 Apr 1998 04:17:45 -0400 (EDT) From: Robert Watson <robert@cyrus.watson.org> To: freebsd-hackers@FreeBSD.ORG Subject: Context switch time Message-ID: <Pine.BSF.3.96.980425041329.28708A-100000@fledge.watson.org>
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Hi, I was wondering what the average context switch time across a syscall invocation is, also, how long it takes to switch in a different process. Presumably just on a Pentium 100ish processor. Is this data I can retrieve from the kernel profiler? mi_switch and tsleep both appear in the profiling data, but it is not clear to me that this includes the time for the switch to kernel context, etc. Thanks, Robert N Watson ---- Carnegie Mellon University http://www.cmu.edu/ Trusted Information Systems http://www.tis.com/ SafePort Network Services http://www.safeport.com/ robert@fledge.watson.org http://www.watson.org/~robert/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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