Date: Tue, 07 Jun 2016 12:34:50 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 210098] Refine slightly search of highest priority thread on the queue(sleepq_signal). Message-ID: <bug-210098-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210098 Bug ID: 210098 Summary: Refine slightly search of highest priority thread on the queue(sleepq_signal). Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: bltsrc@mail.ru Created attachment 171139 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D171139&action= =3Dedit patch loop by eliminating otherwise redundant comparisons besttd against NU= LL. File: kern/subr_sleepqueue.c File revision: r300109 Slightly optimise searching of highest priority thread=20 on the queue by initializing besttd to first element on the tailq=20 and then iterating over sq_blocked[queue] starting from second element, thus utilizing TAILQ_FOREACH_FROM. Also catch empty queue of blocked threads by early testing besttd after first assignment. --=20 You are receiving this mail because: You are the assignee for the bug.=
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