After writing a software installation script to install a large software package using libtool, I noticed that the OSX fork/exec performance seems to be pretty bad. On the same hardware (dual 800MHz g4), using the same script, the elapsted time is a hair over 10 seconds on linux (2.4.18-smp). On OS-X, it is over 3 minutes! % /usr/bin/time ./GM_INSTALL <..> 181.25 real 5.58 user 293.31 sys lmbench shows an order of magnitude difference in fork time, and nearly as bad in exec: g4.local. Darwin 6.0 powerpc-apple-darwin6.0 797 g4 Linux 2.4.18- powerpc-linux-gnu 799 Processor, Processes - times in microseconds - smaller is better ---------------------------------------------------------------- Host OS Mhz null null open selct sig sig fork exec sh call I/O stat clos TCP inst hndl proc proc proc --------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ---- g4.local. Darwin 6.0 797 1.47 2.73 17.2 20.7 27.2 3.00 10.5 7517 17.K 41.K g4 Linux 2.4.18- 799 0.42 0.69 2.52 3.79 33.6 1.23 3.08 659. 2642 12.K Are there any plans to do something about this? Or do I just avoid shell scripts in general, and libtool in particular? Thanks, Drew _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.