On 06/17/04 01:07, Brad Knowles wrote: > At 1:31 AM -0400 2004-06-17, Robert Watson wrote: >> - Removing Giant from UNIX domain sockets > > Out of curiosity, is this something that could be relatively safely > done in general? Any ideas on what the plan is for doing this as the > default on -CURRENT? Wasn't this already done? See this commit: http://lists.freebsd.org/pipermail/cvs-src/2004-June/025082.html >> - Disabling HTT - Using ADAPTIVE_MUTEXES > > These both sound like typical improvements, based on what I've seen > on this list. Any ideas on when they might become the default? ADAPTIVE_MUTEXES was already enabled by default on amd64. See this commit (read thread for discussion): http://lists.freebsd.org/pipermail/cvs-src/2004-June/025234.html It appears no comprehensive testing has been done to check whether it really does improve performance. Many signs do point that way, though. >> - Running with SCHED_4BSD instead of SCHED_ULE > > This is the only one that really concerns me. This shows that we > clearly need more work on ULE. Is there one particular thing that we > seem to be tripping up on, or is it a multitude of things? I think I'll switch to 4BSD until I see more work being done on ULE (I read cvs-src as a hobby already so I'll know when to switch back). I noticed a performance drop from 5.2.1-p8 (with 4BSD) to -CURRENT (with ULE) when I upgraded, but I attributed it to other things. However, the system still feels slower than before despite having since disabled INVARIANTS, WITNESS, and userspace malloc debugging flags. Jon Noack _______________________________________________ freebsd-threads_at_freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-threads To unsubscribe, send any mail to "freebsd-threads-unsubscribe_at_freebsd.org"Received on Fri Jun 18 2004 - 16:49:25 UTC
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