Date: Fri, 03 Apr 2015 19:55:38 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 199151] speed up pagezero assembly on Xeon Message-ID: <bug-199151-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199151 Bug ID: 199151 Summary: speed up pagezero assembly on Xeon Product: Base System Version: 11.0-CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: lidl@pix.net Created attachment 155167 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=155167&action=edit diff to sys/amd64/amd64/support.S - pagezero function The attached patch gives a consistant 1% decrease in system time when doing something that forks a bunch of jobs, like buildworld or buildkernel, when running with modestly high -j values (-j 24 or -j 32). We have been running this in production for a couple of months. -- You are receiving this mail because: You are the assignee for the bug.
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