On Tue, Jan 24, 2006 at 03:12:17PM -0600, Mark Tinguely wrote: > Have you tried to boot with the old contigmalloc using the sysctl > option "vm.old_contigmalloc=1"?
Yes. This makes an enormous difference in boot up times. With vm.old_contigmalloc=1, fxp0 probes within a few seconds. Without it, fxp0 takes more than 7 minutes to probe. > Some people are seeing slow boot/configuration with new style > vm_page_alloc_contig/contigmalloc. yep. > I am doing some profiling of vm_page_alloc_contig() and have found > that larger physical memory configurations makes these problems much worse. yep. I have 12 GB. > I identified 4-5 places that can be changed to decrease the number > of page tables that is needed to be checked before an allocating a range. > Some of the changes will only occasionally save a few page checks, but > others changes could save several hundred or more page checks on every call. If you come up with a patch, I'm more than willing to test it. -- Steve _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"