> I have noticed some performance discrepancies with ULE and 4BSD in > RELENG_7, specifically with ffmpeg. I have all the kernel debugging > options disabled, and as I understand it, the userland debugging is > all off by default in RELENG_7.
Here are a couple of additional benchmarks comparing the schedulers on my system: make -j8 -DNOCLEAN buildkernel 4BSD: 3:25.56 ULE: 3:39.20 Difference: -6.6 % ubench (CPU): 4BSD: 1705258 ULE: 1713510 Difference: +0.48 % super-smack (select-key 10 10000): 4BSD: 55044.38 ULE: 68085.21 Difference: +23.69 % super-smack (update-select 10 10000): 4BSD: 16734.15 ULE: 17631.43 Difference: +5.36 % So at least for the MySQL super-smack benchmark (I know it's a rather contrived benchmark), ULE is significantly faster for select-key and a decent improvement for update-select. ubench is about the same, but building a kernel is also slower with ULE. Was ULE tuned with MySQL in mind, without considering other workloads? Are there other benchmarks for "real" workloads I can run to compare (e.g. Apache benchmarks, etc)? I'd like to help in any way I can, so folks can choose the right scheduler for their usage model. Regards, Josh _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
