Date: Thu, 19 Jul 2007 20:03:15 +0000 (UTC) From: Jeff Roberson <jeff@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern sched_ule.c Message-ID: <200707192003.l6JK3FnH038700@repoman.freebsd.org>
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jeff 2007-07-19 20:03:15 UTC
FreeBSD src repository
Modified files:
sys/kern sched_ule.c
Log:
- Refine the load balancer to improve buildkernel times on dual core
machines.
- Leave the long-term load balancer running by default once per second.
- Enable stealing load from the idle thread only when the remote processor
has more than two transferable tasks. Setting this to one further
improves buildworld. Setting it higher improves mysql.
- Remove the bogus pick_zero option. I had not intended to commit this.
- Entirely disallow migration for threads with SRQ_YIELDING set. This
balances out the extra migration allowed for with the load balancers.
It also makes pick_pri perform better as I had anticipated.
Tested by: Dmitry Morozovsky <marck@rinet.ru>
Approved by: re
Revision Changes Path
1.202 +29 -47 src/sys/kern/sched_ule.c
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