Date: Sun, 21 Nov 2010 00:45:19 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r215598 - in stable/8/sys: sparc64/include vm Message-ID: <201011210045.oAL0jJQE031300@svn.freebsd.org>
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Author: marius Date: Sun Nov 21 00:45:18 2010 New Revision: 215598 URL: http://svn.freebsd.org/changeset/base/215598 Log: MFC: r215093 Enable reservation-based physical memory allocation. Even without the creation of large page mappings in the pmap, it can provide modest performance benefits. In particular, for a "buildworld" on a 2x 1GHz Ultrasparc IIIi it reduced the wall clock time by 2.2% and the system time by 12.6%. Tested by: marius@ Modified: stable/8/sys/sparc64/include/vmparam.h stable/8/sys/vm/vm_reserv.c Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) stable/8/sys/dev/xen/xenpci/ (props changed) Modified: stable/8/sys/sparc64/include/vmparam.h ============================================================================== --- stable/8/sys/sparc64/include/vmparam.h Sat Nov 20 22:30:09 2010 (r215597) +++ stable/8/sys/sparc64/include/vmparam.h Sun Nov 21 00:45:18 2010 (r215598) @@ -121,10 +121,17 @@ #define VM_NFREEORDER 12 /* - * Disable superpage reservations. + * Enable superpage reservations: 1 level. */ #ifndef VM_NRESERVLEVEL -#define VM_NRESERVLEVEL 0 +#define VM_NRESERVLEVEL 1 +#endif + +/* + * Level 0 reservations consist of 512 pages. + */ +#ifndef VM_LEVEL_0_ORDER +#define VM_LEVEL_0_ORDER 9 #endif /* Modified: stable/8/sys/vm/vm_reserv.c ============================================================================== --- stable/8/sys/vm/vm_reserv.c Sat Nov 20 22:30:09 2010 (r215597) +++ stable/8/sys/vm/vm_reserv.c Sun Nov 21 00:45:18 2010 (r215598) @@ -197,7 +197,7 @@ sysctl_vm_reserv_partpopq(SYSCTL_HANDLER } mtx_unlock(&vm_page_queue_free_mtx); sbuf_printf(&sbuf, "%5d: %6dK, %6d\n", level, - unused_pages * (PAGE_SIZE / 1024), counter); + unused_pages * ((int)PAGE_SIZE / 1024), counter); } sbuf_finish(&sbuf); error = SYSCTL_OUT(req, sbuf_data(&sbuf), sbuf_len(&sbuf));
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