Nicolas Williams wrote: > On Sun, Jan 04, 2009 at 11:26:52PM +0100, Roland Mainz wrote: > >> ksh93-integration update1 landed a few days ago and added "shcomp" (the >> shell script compiler) and a matching kernel module to recognize the >> bytecode... >> > > Or perhaps merely "porting" (to make better use of built-ins) shell > scripts to ksh93 will help the most. > > >> ... does anyone have suggestions for which scripts a compilation would >> be usefull ? >> > > You could analyze boot performance to find the SMF start method scripts > that delay the most dependents by the most time. Those would be the > scripts to target first. >
NB, a few years ago I made a lot of measurements in this area using dtrace to figure out what was going on during boot. Though more things are now becoming SMF'ed, the only serialized area of concern for the boot scripts was the legacy services. If someone wants to start this sort of analysis up again, I'll be happy to share what data I have. BTW, the basic results showed that having more than one CPU is the best thing you can do to improve boot performance. This shouldn't be too surprising... -- richard
