Tim Vanderhoek scribbled this message on Jul 29: > On Thu, Jul 29, 1999 at 07:05:57PM -0400, James Howard wrote: > > > > <warning type="Anything said here wrong is my fault, not DES's"> > > > > DES tells me he has a new version (0.10) which mmap()s. It supposedly > > cuts the run time down significantly, I do not have the numbers in front > > of me. > > I do. Still far too slow. I'll work on this tomorrow, since that > seems the only way to convince people that mmap is not such a big > win. :-(
I just managed to get a five time speed increase by removing an uncessary copy... and now, grep spends 50% of it's time in regexc, 37.2% of it's time in mmfgetln, and this is because of the scanning for a new line character... > Hmm... Maybe I'll even turn-out to be wrong. ;-) I really believe > mmap falls into the category of "might be nice, but not necessary and > does complicate things..." I think it is a big win... it shaved off around a half second from 3 seconds down to 2 and a half seconds... -- John-Mark Gurney Voice: +1 541 684 8449 Cu Networking P.O. Box 5693, 97405 "The soul contains in itself the event that shall presently befall it. The event is only the actualizing of its thought." -- Ralph Waldo Emerson To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-hackers" in the body of the message
