On Sunday 27 October 2002 16:16, Colin Watson wrote: > On Sun, Oct 27, 2002 at 07:43:02PM -0400, Oleg wrote: > > Colin Watson wrote: > > > You get most of the speed increases by recompiling a very small number > > > of things. > > > > This is true for applications in the following wording "you get most > > of the speed increase by optimizing small parts of the program". For > > something like Debian however, you can't possibly know in advance > > where the users' bottleneck will happen to be. BTW, Gentoo users say > > their systems "feel" a lot faster overall. > > That's probably because they're using gcc 3.2 and ELF prelinking already > (at a guess). This is coming to Debian, but requires more transitional > work. > > Anyway, "feel" doesn't wash. Every time this comes up the answer is to > request a real benchmark: to my knowledge the only time someone's ever > provided one is in the case of openssl, which nowadays in unstable has > versions optimized for a number of processes. >
You also have to find out what options they compiled with and against what libraries. Debian may link in more functionality or use a slighlty less optimized (for CPU anyway) version. I have also seen that Mandrake (and perhaps others) use the optimized glibc we used to ship. We found it to cause stability problems. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
