* Copyright (c) 1980, 1986, 1989 Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* from: @(#)param.c 7.20 (Berkeley) 6/27/91
* $Id: param.c,v 1.4 1993/11/07 17:38:29 wollman Exp $
#include "machine/vmparam.h"
* System parameter formulae.
* This file is copied into each directory where we compile
* the kernel; it should be modified there to suit local taste
* Compiled with -DHZ=xx -DTIMEZONE=x -DDST=x -DMAXUSERS=xx -DMAXFDESCS=xx
int tickadj
= 240000 / (60 * HZ
); /* can adjust 240ms in 60s */
int tickadj
= TICKADJ
/* NTP users may prefer a smaller value */
struct timezone tz
= { TIMEZONE
, DST
};
#define NPROC (20 + 16 * MAXUSERS)
#define NTEXT (80 + NPROC / 8) /* actually the object cache */
#define NVNODE (NPROC + NTEXT + 100)
long desiredvnodes
= NVNODE
;
int maxfdescs
= MAXFDESCS
;
int maxfiles
= 3 * (NPROC
+ MAXUSERS
) + 80;
int ncallout
= 16 + NPROC
;
int nclist
= 60 + 12 * MAXUSERS
;
int nmbclusters
= NMBCLUSTERS
;
int fscale
= FSCALE
; /* kernel uses `FSCALE', user uses `fscale' */
* Values in support of System V compatible shared memory. XXX
#define SHMMAX (SHMMAXPGS*NBPG)
#define SHMMNI 32 /* <= SHMMMNI in shm.h */
#define SHMALL (SHMMAXPGS/CLSIZE)
struct shminfo shminfo
= {
* Values in support of System V compatible semaphores.
struct seminfo seminfo
= {
SEMMAP
, /* # of entries in semaphore map */
SEMMNI
, /* # of semaphore identifiers */
SEMMNS
, /* # of semaphores in system */
SEMMNU
, /* # of undo structures in system */
SEMMSL
, /* max # of semaphores per id */
SEMOPM
, /* max # of operations per semop call */
SEMUME
, /* max # of undo entries per process */
SEMUSZ
, /* size in bytes of undo structure */
SEMVMX
, /* semaphore maximum value */
SEMAEM
/* adjust on exit max value */
* Values in support of System V compatible messages.
struct msginfo msginfo
= {
MSGMAX
, /* max chars in a message */
MSGMNI
, /* # of message queue identifiers */
MSGMNB
, /* max chars in a queue */
MSGTQL
, /* max messages in system */
MSGSSZ
, /* size of a message segment */
/* (must be small power of 2 greater than 4) */
MSGSEG
/* number of message segments */
* These are initialized at bootstrap time
* to values dependent on memory size
* These have to be allocated somewhere; allocating
* them here forces loader errors if this file is omitted
* (if they've been externed everywhere else; hah!).
* Here so that hash table sizes can depend on MAXUSERS/NPROC.
* Hash size must be a power of two.
* NOW omission of this file will cause loader errors!
struct proc
*pidhash
[PIDHSZ
];
struct pgrp
*pgrphash
[PIDHSZ
];
int pidhashmask
= PIDHSZ
- 1;
char hostname
[MAXHOSTNAMELEN
];
char domainname
[MAXHOSTNAMELEN
];
#if defined(COMPAT_43) && (defined(vax) || defined(tahoe))