Date: Fri, 2 Feb 2001 14:18:31 -0800 (PST) From: Matt Dillon <dillon@earth.backplane.com> To: Maxim Sobolev <sobomax@FreeBSD.ORG> Cc: dima@unixfreak.org (Dima Dorfman), mi@aldan.algebra.com, deischen@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: mdconfig config file (was: cvs commit: src/sys/i386/conf GENERI C) Message-ID: <200102022218.f12MIV700601@earth.backplane.com> References: <200102022129.f12LTa816954@vic.sabbo.net>
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:
:> <snip>
:>
:> if ((pid = fork()) == 0) {
:
:Probably vfork() is better here, no?
:
:-Maxim
My rule for using vfork() is: Does it improve performance in
a noticeable way? The answer, at least for mount_*, is no. If the
answer is no, you should simply use a normal fork().
fork() under FreeBSD is not all that expensive. vfork() will be faster,
but unless you are fork/exec'ing a few dozen commands a second you will
never notice the difference.
-Matt
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