Tim Traver wrote:
Kris Kennaway wrote:Robert, ok, I looked and it looks like the port compiles statically, and I was able to grab the binary from the old disk and move it over to the new one... here is info now on how it is linked : [root ~]# ldd ubench.5.4 ubench.5.4: libm.so.3 => /usr/local/lib/compat/libm.so.3 (0x2807e000) libc.so.5 => /usr/local/lib/compat/libc.so.5 (0x28099000) [root ~]# ldd /usr/local/bin/ubench /usr/local/bin/ubench: libm.so.5 => /lib/libm.so.5 (0x2807f000) libc.so.7 => /lib/libc.so.7 (0x28094000) where ubench is the locally compiled one... For reference, here are the old stats FreeBSD 5.4 - CPU 112,721 - MEM - 146,483 FreeBSD 7.0 - CPU 177,339 - MEM - 95,920 And here is the run of the ubench.5.4 binary: FreeBSD 7.0 - CPU 139,623 - MEM - 207,180 And a rerun of the FreeBSD 7.0 ubench making sure there is absolutely no activity on the box FreeBSD 7.0 - CPU 200,562 - MEM - 107,695 That run is a little better than the previous one, but there seems to still be quite a difference in the memory tests... Does that show anything ????It shows that if there is a difference it is probably in userland, not the kernel. The obvious guess is the new malloc in 7.0. As for whether it indicates a bug, someone would have to look more closely at what ubench does. The author's description of his benchmark doesn't inspire confidence: it does "rather senseless memory allocation and memory to memory copying operations for another 3 mins concurrently using several processes". KrisKris, ok, so is there anything I can do to help????? or, I noticed you cc'ed some of the other performance guys...they going to check it out?
jasone is the je in jemalloc, so maybe he will be able to comment on whether whatever the heck ubench does is an abnormally pessimal case for it, or something.
Kris _______________________________________________ freebsd-performance_(_at_)_freebsd_(_dot_)_org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-performance To unsubscribe, send any mail to "freebsd-performance-unsubscribe_(_at_)_freebsd_(_dot_)_org"