On Sunday 07 December 2003 9:48 am, Jakub Jelinek wrote: > On Sun, Dec 07, 2003 at 06:48:56AM -0800, Steve Snyder wrote: > > On Sunday 07 December 2003 1:29 am, Klaasjan Brand wrote: > > > On Sun, 2003-12-07 at 08:04, Steve Snyder wrote: > > > > It seems that the current GLibC package for RHL v9 is noticably > > > > slower than the lastest GLibC for RHL v7.3. > > > > > > > > I can't think of any reason for the performance difference other > > > > than the version of GlibC libraries used. For both versions of > > > > RHL the i686 versions of the respective GLibC RPMs are installed > > > > and running on a Pentium4 machine. The same version of the Linux > > > > kernel is used in bother environments. > > > > > > Then you are not running "official" Red Hat Linux... do you get the > > > performance difference also using the latest versions of the Red > > > Hat kernels for both distributions? > > > > True. I'm running the same plain-vanilla 2.4.23 kernel in both > > instances. > > Don't. You're then testing performance of libraries which are not > developed anymore (i.e. LinuxThreads). LinuxThreads are included just > to support old and buggy software or to support old kernels. > Please use RHL kernels or 2.6.0-testN if you want to do performance > testing. After sending that last message I tried my program with the current RH-released kernel for RHL 9 (2.4.20-24.9). My program took twice as long to execute. See, the problem is that my machine is a very new notebook system, and needs the ACPI support in the 2.4.23 kernel. It's not that I'm in love with the latest kernel, but that the not-fully-baked ACPI suport in RH's kernels won't work with my hardware. I tried the RH kernel, then tried it again when the glibc-2.3.2-27.9.6 release refused to work with a standard Linux kernel. Now I'm running glibc-2.3.2-27.9.7 with the 2.4.23 kernel because that's what it takes to enumerate all my hardware devices. That said, thanks for the answer to the question I originally posed. It seems that the performance difference is due to tighter integration of the kernel and GLibC in RHL 9. I'll try 2.6.0-test11 and see how that works. -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list
