Back in March I posted some MySQL benchmarks after we switched to a 1:1 threading model in -current *. I've spent a lot of time tuning the pthread library so I thought I'd post a followup. The original benchmark that I used (supersmack) now performs much better on -current that it did a few months ago, so I picked something else this time: MySQL sysbench. Most of the sysbench runs that I've seen to date have sysbench running on the same machine as the database. That's a good test but with the exception of small installations and out-of-band activity, production setups rarely look like that. So I ran sysbench itself on a seperate dual core system. Here are the results, comparing NetBSD 3 with NetBSD-current: http://www.netbsd.org/~ad/sysbench/netbsd.png And NetBSD-current compared to other systems: http://www.netbsd.org/~ad/sysbench/netbsd-and-others.png Note this is stock NetBSD-current with FreeBSD's malloc() (jemalloc) in libc. I'll be merging that some time soon. With the vmlocking CVS branch and Mindaugas' new scheduler NetBSD peaks around 500 TPS. There is a very gradual fall off in the number of TPS achieved as the number of connections begins to ramp up. I suspect that could be due to a weakness somewhere in the network stack, so I'm hopeful that a bit of time spent profiling with large numbers of connections could yield good results. Thanks, Andrew * http://mail-index.netbsd.org/tech-kern/2007/03/02/0005.html