On 5/18/05, Hubert Chan <[EMAIL PROTECTED]> wrote: > The configure flags for compiling libgc are: --disable-threads > --disable-shared --enable-cplusplus (obviously with --disable-threads > toggled for the different tests). I'm also running on a > single-processor machine.
Not a hyperthreaded Xeon, for instance? Are you running a UP kernel so that (kernel-level) spinlocks are no-ops? Note also that the libgc implementation of threading primitives on Linux was historically tied pretty closely to linuxthreads, and parsed "cpu" lines out of /proc/stat to find out whether to use UP or SMP tunings. I haven't looked at the current code yet, but you might want to make sure you are compiling specifically for NPTL and do not have USE_SPIN_LOCK defined (which forces the use of a libgc spinlock implementation that loses on NPTL). Cheers, - Michael
