Larry Rosenman wrote: > On Thu, 2002-08-29 at 18:53, Alvaro Herrera wrote: > > En Thu, 29 Aug 2002 19:35:13 -0400 (EDT) > > Bruce Momjian <[EMAIL PROTECTED]> escribi?: > > > > > In your results it seems to suggest that memset() gets slower for longer > > > buffer lengths, and a for loop starts to win at longer sizes. Should I > > > pull out my Solaris kernel source and see what memset() is doing? > > > > No, because memset() belongs to the libc AFAICS... Do you have source > > code for that? > and if you do, what vintage is it? I believe Solaris has mucked with > stuff over the last few rev's.
OK, I am not permitted to discuss the contents of the source with anyone except other Solaris source licensees, but I can say that there isn't anything fancy in the source. There is nothing that would explain the slowdown of memset >512 bytes compared to MemSet. All lengths 64, 128, ... use the same algorithm in the memset code. I got the source from the now-cancelled Solaris Foundation Source Program: http://wwws.sun.com/software/solaris/source/ -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])