On Tue, 2007-12-04 at 13:00 +0100, Ivan Voras wrote: > Krassimir Slavchev wrote: > > > There is another report for such problems: > > > > http://blog.insidesystems.net/articles/2007/04/09/what-did-i-do-wrong > > Of course - FreeBSD 6.x is really bad at SMP where number of CPUs is > larger then about 2 and the loads include much kernel work (e.g. IO, > context switches). Numeric tasks (SSL) don't depend on the kernel and so > they scale ok. See > http://people.freebsd.org/~kris/scaling/Scalability%20Update.pdf for > details. > > Another issue is interesting in this thread: that apparently 7.0 also > has a well defined workload where it fails. >
There is also his follow up to that post, comparing postgres on 6.2 with 7.0 (ULE and 4BSD schedulers). http://blog.insidesystems.net/articles/2007/04/11/postgresql-scaling-on-6-2-and-7-0 I'm very excited about getting some 7.0 servers into testing prior to deployment as production mysql boxes. Having run 7-CURRENT on my lappy for best part of 15 months, I think its supersmashinggreat :) Tom
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