Date: Sun, 26 Dec 2004 07:30:36 +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 subr_trap.c Message-ID: <200412260730.iBQ7UaDI001958@repoman.freebsd.org>
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jeff 2004-12-26 07:30:36 UTC
FreeBSD src repository
Modified files:
sys/kern subr_trap.c
Log:
- Run sched_userret() after thread_userret(). Before, sched_userret() would
lower the priority of the returning thread to a user priority before
calling into thread_userret() which would call wakeup() which in turn would
cause the returning thread to eventually context switch rather than
completing its slice. Allowing this thread to complete its slice first
yields a 15% performance improvement in super-smack on my dual opteron with
4BSD.
Revision Changes Path
1.277 +4 -5 src/sys/kern/subr_trap.c
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