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improve sizing of kmem_arena now that more allocations are made from it 

don't enforce limits if not required

ok: riz@
This commit is contained in:
para 2012-02-04 17:56:16 +00:00
parent 6c28a43a78
commit 5f319369a0
6 changed files with 30 additions and 23 deletions
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7
sys/arch/amd64/include/param.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.16 2012/01/24 20:03:36 christos Exp $ */
/* $NetBSD: param.h,v 1.17 2012/02/04 17:56:16 para Exp $ */
#ifdef __x86_64__
@ -81,11 +81,12 @@
#endif
/*
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* Minimum size of the kernel kmem_arena in PAGE_SIZE-sized
* logical pages.
* No enforced maximum on amd64.
*/
#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((1 *1024 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_UNLIMITED 1
/*
* XXXfvdl the PD* stuff is different from i386.

6
sys/arch/arm/include/arm32/param.h
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@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.16 2011/01/14 02:06:24 rmind Exp $ */
/* $NetBSD: param.h,v 1.17 2012/02/04 17:56:16 para Exp $ */
/*
* Copyright (c) 1994,1995 Mark Brinicombe.
@ -64,8 +64,8 @@
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* logical pages.
*/
#define NKMEMPAGES_MIN_DEFAULT ((6 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((7 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
/* Constants used to divide the USPACE area */

4
sys/arch/hppa/include/param.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.17 2012/01/24 20:03:36 christos Exp $ */
/* $NetBSD: param.h,v 1.18 2012/02/04 17:56:16 para Exp $ */
/* $OpenBSD: param.h,v 1.12 2001/07/06 02:07:41 provos Exp $ */
@ -83,7 +83,7 @@
* Size of kernel malloc arena in logical pages
*/
#define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
/*
* Mach derived conversion macros

4
sys/arch/i386/include/param.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.74 2012/01/24 20:03:37 christos Exp $ */
/* $NetBSD: param.h,v 1.75 2012/02/04 17:56:16 para Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -129,7 +129,7 @@
* logical pages.
*/
#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((280 * 1024 * 1024) >> PAGE_SHIFT)
/*
* Mach derived conversion macros

9
sys/arch/sparc64/include/param.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.47 2012/01/24 20:03:38 christos Exp $ */
/* $NetBSD: param.h,v 1.48 2012/02/04 17:56:16 para Exp $ */
/*
* Copyright (c) 1992, 1993
@ -193,11 +193,12 @@ extern int nbpg, pgofset, pgshift;
#define MSGBUFSIZE NBPG
/*
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* Minimum size of the kernel kmem_arena in PAGE_SIZE-sized
* logical pages.
* No enforced maximum on sparc64.
*/
#define NKMEMPAGES_MIN_DEFAULT ((6 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MIN_DEFAULT ((64 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_UNLIMITED 1
#ifdef _KERNEL
#ifndef _LOCORE

23
sys/uvm/uvm_km.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: uvm_km.c,v 1.118 2012/02/03 19:25:07 matt Exp $ */
/* $NetBSD: uvm_km.c,v 1.119 2012/02/04 17:56:17 para Exp $ */
/*
* Copyright (c) 1997 Charles D. Cranor and Washington University.
@ -120,7 +120,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_km.c,v 1.118 2012/02/03 19:25:07 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_km.c,v 1.119 2012/02/04 17:56:17 para Exp $");
#include "opt_uvmhist.h"
@ -189,10 +189,16 @@ kmeminit_nkmempages(void)
return;
}
npages = physmem;
#if defined(PMAP_MAP_POOLPAGE)
npages = (physmem / 4);
#else
npages = (physmem / 3) * 2;
#endif /* defined(PMAP_MAP_POOLPAGE) */
#ifndef NKMEMPAGES_MAX_UNLIMITED
if (npages > NKMEMPAGES_MAX)
npages = NKMEMPAGES_MAX;
#endif
if (npages < NKMEMPAGES_MIN)
npages = NKMEMPAGES_MIN;
@ -212,6 +218,7 @@ kmeminit_nkmempages(void)
void
uvm_km_bootstrap(vaddr_t start, vaddr_t end)
{
bool kmem_arena_small;
vaddr_t base = VM_MIN_KERNEL_ADDRESS;
struct uvm_map_args args;
int error;
@ -221,11 +228,8 @@ uvm_km_bootstrap(vaddr_t start, vaddr_t end)
start, end, 0,0);
kmeminit_nkmempages();
kmemsize = nkmempages * PAGE_SIZE;
/* kmemsize = MIN((((vsize_t)(end - start)) / 3),
((((vsize_t)uvmexp.npages) * PAGE_SIZE) / 2));
kmemsize = round_page(kmemsize); */
kmemsize = (vsize_t)nkmempages * PAGE_SIZE;
kmem_arena_small = kmemsize < 64 * 1024 * 1024;
UVMHIST_LOG(maphist, "kmemsize=%#"PRIxVSIZE, kmemsize, 0,0,0);
@ -301,7 +305,8 @@ uvm_km_bootstrap(vaddr_t start, vaddr_t end)
kmem_va_arena = vmem_create("kva", 0, 0, PAGE_SIZE,
vmem_alloc, vmem_free, kmem_arena,
16 * PAGE_SIZE, VM_NOSLEEP | VM_BOOTSTRAP, IPL_VM);
(kmem_arena_small ? 4 : 16) * PAGE_SIZE,
VM_NOSLEEP | VM_BOOTSTRAP, IPL_VM);
UVMHIST_LOG(maphist, "<- done", 0,0,0,0);
}