On Tue, 2009-02-24 at 10:54 -0500, erik quanstrom wrote: > > about 5 years ago i took a class on performance tuning Solaris. > > > > The instructor claimed that fork was expensive because accounting is never > > really turned off, just piped to /dev/null. there is no accounting > > overhead for threads. > > > > I never bothered to verify this, but now that this comes up, I'd tempted. > > there's no need to guess. here's the source code. > > http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/os/fork.c > > cfork is ~525 lines long and seems to take the curious tack of > forking all the lwps associated with a process.
that would be forkall(), not fork1()/fork() Thanks, Roman.
