4fbd563eb8
from 1 megabyte of ram per user to 2 megabytes of ram per user, and reduce the cap from 512 to 384. 512 leaves around 240 MB of KVM available while 384 leaves 270 MB of KVM available. Available KVM is important in order to deal with zalloc and kernel malloc area growth. Reviewed by: mckusick MFC: either before 4.5 if re's agree, or after 4.5
165 lines
5.1 KiB
C
165 lines
5.1 KiB
C
/*
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* Copyright (c) 1980, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)param.c 8.3 (Berkeley) 8/20/94
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* $FreeBSD$
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*/
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#include "opt_param.h"
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#include "opt_maxusers.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <machine/vmparam.h>
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/*
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* System parameter formulae.
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*/
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#ifndef HZ
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#define HZ 100
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#endif
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#define NPROC (20 + 16 * maxusers)
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#ifndef NBUF
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#define NBUF 0
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#endif
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#ifndef MAXFILES
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#define MAXFILES (maxproc * 2)
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#endif
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int hz;
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int tick;
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int tickadj; /* can adjust 30ms in 60s */
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int maxusers; /* base tunable */
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int maxproc; /* maximum # of processes */
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int maxprocperuid; /* max # of procs per user */
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int maxfiles; /* sys. wide open files limit */
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int maxfilesperproc; /* per-proc open files limit */
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int ncallout; /* maximum # of timer events */
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int nbuf;
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int nswbuf;
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int maxswzone; /* max swmeta KVA storage */
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int maxbcache; /* max buffer cache KVA storage */
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u_quad_t maxtsiz; /* max text size */
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u_quad_t dfldsiz; /* initial data size limit */
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u_quad_t maxdsiz; /* max data size */
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u_quad_t dflssiz; /* initial stack size limit */
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u_quad_t maxssiz; /* max stack size */
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u_quad_t sgrowsiz; /* amount to grow stack */
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/*
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* These have to be allocated somewhere; allocating
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* them here forces loader errors if this file is omitted
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* (if they've been externed everywhere else; hah!).
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*/
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struct buf *swbuf;
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/*
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* Boot time overrides that are not scaled against main memory
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*/
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void
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init_param1(void)
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{
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hz = HZ;
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TUNABLE_INT_FETCH("kern.hz", &hz);
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tick = 1000000 / hz;
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tickadj = howmany(30000, 60 * hz); /* can adjust 30ms in 60s */
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#ifdef VM_SWZONE_SIZE_MAX
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maxswzone = VM_SWZONE_SIZE_MAX;
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#endif
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TUNABLE_INT_FETCH("kern.maxswzone", &maxswzone);
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#ifdef VM_BCACHE_SIZE_MAX
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maxbcache = VM_BCACHE_SIZE_MAX;
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#endif
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TUNABLE_INT_FETCH("kern.maxbcache", &maxbcache);
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maxtsiz = MAXTSIZ;
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TUNABLE_QUAD_FETCH("kern.maxtsiz", &maxtsiz);
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dfldsiz = DFLDSIZ;
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TUNABLE_QUAD_FETCH("kern.dfldsiz", &dfldsiz);
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maxdsiz = MAXDSIZ;
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TUNABLE_QUAD_FETCH("kern.maxdsiz", &maxdsiz);
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dflssiz = DFLSSIZ;
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TUNABLE_QUAD_FETCH("kern.dflssiz", &dflssiz);
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maxssiz = MAXSSIZ;
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TUNABLE_QUAD_FETCH("kern.maxssiz", &maxssiz);
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sgrowsiz = SGROWSIZ;
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TUNABLE_QUAD_FETCH("kern.sgrowsiz", &sgrowsiz);
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}
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/*
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* Boot time overrides that are scaled against main memory
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*/
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void
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init_param2(int physpages)
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{
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/* Base parameters */
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if ((maxusers = MAXUSERS) == 0) {
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maxusers = physpages / (2 * 1024 * 1024 / PAGE_SIZE);
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if (maxusers < 32)
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maxusers = 32;
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if (maxusers > 384)
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maxusers = 384;
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}
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TUNABLE_INT_FETCH("kern.maxusers", &maxusers);
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/*
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* The following can be overridden after boot via sysctl. Note:
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* unless overriden, these macros are ultimately based on maxusers.
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*/
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maxproc = NPROC;
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TUNABLE_INT_FETCH("kern.maxproc", &maxproc);
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maxfiles = MAXFILES;
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TUNABLE_INT_FETCH("kern.maxfiles", &maxfiles);
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maxprocperuid = (maxproc * 9) / 10;
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maxfilesperproc = (maxfiles * 9) / 10;
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/*
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* Cannot be changed after boot.
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*/
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nbuf = NBUF;
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TUNABLE_INT_FETCH("kern.nbuf", &nbuf);
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ncallout = 16 + maxproc + maxfiles;
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TUNABLE_INT_FETCH("kern.ncallout", &ncallout);
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}
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