-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Alexey Popov wrote: > Hi > > Robert Watson wrote: >> Evidence in-hand seems to suggest that 8 core systems work very well >> for most users, and reflect a significant performance increase with >> 7.0 over previous FreeBSD releases. > I disagree with that. Heavily loaded Apache, MySQL, Postgres does not > work well.
There is another report for such problems: http://blog.insidesystems.net/articles/2007/04/09/what-did-i-do-wrong > >>>> The right path forwawrd at this point is to diagnosis the problems >>>> and work on fixing them in 8-CURRENT, and assuming they are not >>>> highly disruptive, MFC them for FreeBSD 7.1. >>> >>> I believe at least the bug with lockmgr contention should be fixed >>> before release. >> Could you point me at the specific proposed change in question? I >> don't think I've seen it come across re@ as a potential merge >> request. Changing locking primitives close to a release is, FYI, a >> risky business, as while it may improve performance in specific cases, >> we may not have a lot of information about more general cases. We >> also risk opening up previously nascent race conditions in lock >> consumers. > Kris sent me proof of concept patch that helped much against high > lockmgr contention. After applying this patch 8-core server become > faster that 4-core. But, again, it's still slower than Linux. > > Here's the patch: > http://lists.freebsd.org/pipermail/freebsd-stable/2007-November/038449.html > > Here's Kris saying that it helps: > http://lists.freebsd.org/pipermail/freebsd-stable/2007-November/038672.html > > I'm not sure it will help to MySQL and Prostgres, but symptoms are > mostly identical. > > With best regards, > Alexey Popov > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFHVTFwxJBWvpalMpkRAjX0AJ4otHVzAzVqVRKJxUlD4Y9ENdD5PACgq/eZ ptzb/VC56JFh/Iiepy+bK/s= =wpdw -----END PGP SIGNATURE----- _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
