Kirk True <kirk@movaris.com> wrote: > > I just upgraded to 2.6.3-mm2 but am still seeing a factor of two speed > slowdown between 2.4.20 and 2.6.3-mm2 for both sequential and random > memory accesses into 1024 MB allocated from malloc. 2.6 VM has problems, but is usually OK for single-task stuff. You'd need to tell us a lot about your machine, and provide sufficient information for others to reproduce what you're seeing. And run some other tests to verify that your disk system is achieving the same bandwidth under both kernels. Not `hdparm -t' please, it is crap. Something like time (dd if=/dev/zero of=/mnt/x/foo bs=1M count=2000 ; sync) umount /mnt/x mount /mnt/x time dd if=/mnt/x/foo of=/dev/null bs=1M -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
