Sat Aug 29 20:08:08 2020 UTC ()
Bump UBC_WINSHIFT to 16 (64KB), and UBC_NWINS to 4096 (256MB total).
Alpha has plenty of KVA to use for this.


(thorpej)
diff -r1.38 -r1.39 src/sys/arch/alpha/include/vmparam.h
cvs diff -r1.38 -r1.39 src/sys/arch/alpha/include/vmparam.h (expand / switch to unified diff)

--- src/sys/arch/alpha/include/vmparam.h 2012/12/10 16:12:19 1.38
+++ src/sys/arch/alpha/include/vmparam.h 2020/08/29 20:08:08 1.39
@@ -1,14 +1,14 @@ @@ -1,14 +1,14 @@
1/* $NetBSD: vmparam.h,v 1.38 2012/12/10 16:12:19 chs Exp $ */ 1/* $NetBSD: vmparam.h,v 1.39 2020/08/29 20:08:08 thorpej Exp $ */
2 2
3/* 3/*
4 * Copyright (c) 1988 University of Utah. 4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993 5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved. 6 * The Regents of the University of California. All rights reserved.
7 * 7 *
8 * This code is derived from software contributed to Berkeley by 8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer 9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell. 10 * Science Department and Ralph Campbell.
11 * 11 *
12 * Redistribution and use in source and binary forms, with or without 12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions 13 * modification, are permitted provided that the following conditions
14 * are met: 14 * are met:
@@ -48,26 +48,37 @@ @@ -48,26 +48,37 @@
48/* 48/*
49 * Machine dependent constants for Alpha. 49 * Machine dependent constants for Alpha.
50 */ 50 */
51 51
52/* 52/*
53 * All systypes currently supported by NetBSD/alpha have an 8K pages. 53 * All systypes currently supported by NetBSD/alpha have an 8K pages.
54 * Override the PAGE_* definitions to be compile-time constants. 54 * Override the PAGE_* definitions to be compile-time constants.
55 */ 55 */
56#define PAGE_SHIFT 13 56#define PAGE_SHIFT 13
57#define PAGE_SIZE (1 << PAGE_SHIFT) 57#define PAGE_SIZE (1 << PAGE_SHIFT)
58#define PAGE_MASK (PAGE_SIZE - 1) 58#define PAGE_MASK (PAGE_SIZE - 1)
59 59
60/* 60/*
 61 * Defaults for Unified Buffer Cache parameters.
 62 */
 63
 64#ifndef UBC_WINSHIFT
 65#define UBC_WINSHIFT 16 /* 64KB */
 66#endif
 67#ifndef UBC_NWINS
 68#define UBC_NWINS 4096 /* for a total of 256MB */
 69#endif
 70
 71/*
61 * USRSTACK is the top (end) of the user stack. 72 * USRSTACK is the top (end) of the user stack.
62 * 73 *
63 * Digital UNIX (formerly DEC OSF/1) places the stack below the 74 * Digital UNIX (formerly DEC OSF/1) places the stack below the
64 * text segment (i.e. growing downward from 4G). We may want to 75 * text segment (i.e. growing downward from 4G). We may want to
65 * consider doing that at some point, but it might require changes 76 * consider doing that at some point, but it might require changes
66 * to the exec code. 77 * to the exec code.
67 */ 78 */
68#define USRSTACK ((vaddr_t)0x0000000200000000) /* 8G */ 79#define USRSTACK ((vaddr_t)0x0000000200000000) /* 8G */
69 80
70/* 81/*
71 * Virtual memory related constants, all in bytes 82 * Virtual memory related constants, all in bytes
72 */ 83 */
73#ifndef MAXTSIZ 84#ifndef MAXTSIZ