Date: Thu, 5 Feb 2009 15:09:42 +0000 (UTC) From: Doug Rabson <dfr@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r188153 - user/dfr/xenhvm/6/sys/amd64/conf Message-ID: <200902051509.n15F9gCj030370@svn.freebsd.org>
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Author: dfr Date: Thu Feb 5 15:09:42 2009 New Revision: 188153 URL: http://svn.freebsd.org/changeset/base/188153 Log: Adaptive mutex spinning turns out to be very slightly slower on Xen, probably due to scheduling conflicts with other guests within the same hypervisor. Modified: user/dfr/xenhvm/6/sys/amd64/conf/XENHVM Modified: user/dfr/xenhvm/6/sys/amd64/conf/XENHVM ============================================================================== --- user/dfr/xenhvm/6/sys/amd64/conf/XENHVM Thu Feb 5 15:09:04 2009 (r188152) +++ user/dfr/xenhvm/6/sys/amd64/conf/XENHVM Thu Feb 5 15:09:42 2009 (r188153) @@ -59,7 +59,8 @@ options SYSVMSG # SYSV-style message options SYSVSEM # SYSV-style semaphores options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions options KBD_INSTALL_CDEV # install a CDEV entry in /dev -options ADAPTIVE_GIANT # Giant mutex is adaptive. +options NO_ADAPTIVE_MUTEXES +#options ADAPTIVE_GIANT # Giant mutex is adaptive. options KDB options DDB @@ -69,6 +70,7 @@ device atpic # 8259A compatability # Linux 32-bit ABI support options LINPROCFS # Cannot be a module yet. +options SMP # Bus support. device acpi
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