bsd/conf/param.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1980, 1986, 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  * (c) UNIX System Laboratories, Inc.
  27  * All or some portions of this file are derived from material licensed
  28  * to the University of California by American Telephone and Telegraph
  29  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  30  * the permission of UNIX System Laboratories, Inc.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)param.c     8.3 (Berkeley) 8/20/94
  61  */
  62
  63 #include <confdep.h>
  64 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/socket.h>
  67 #include <sys/vnode_internal.h>
  68 #include <sys/file_internal.h>
  69 #include <sys/callout.h>
  70 #include <sys/clist.h>
  71 #include <sys/mbuf.h>
  72 #include <sys/domain.h>
  73 #include <sys/kernel.h>
  74 #include <sys/quota.h>
  75 #include <ufs/ufs/inode.h>
  76 #include <miscfs/fifofs/fifo.h>
  77 #include <sys/shm_internal.h>
  78 #include <sys/aio_kern.h>
  79
  80 struct  timezone tz = { TIMEZONE, PST };
  81
  82 #define NPROC (20 + 16 * MAXUSERS)
  83 #define HNPROC (20 + 64 * MAXUSERS)
  84 int     maxproc = NPROC;
  85 __private_extern__ int hard_maxproc = HNPROC;   /* hardcoded limit */
  86 int nprocs = 0; /* XXX */
  87
  88 #define NTEXT (80 + NPROC / 8)                  /* actually the object cache */
  89 #define NVNODE (NPROC + NTEXT + 300)
  90 int     desiredvnodes = NVNODE + 700;
  91
  92 #define MAXFILES (OPEN_MAX + 2048)
  93 int     maxfiles = MAXFILES;
  94
  95 unsigned int    ncallout = 16 + 2*NPROC;
  96 int nmbclusters = NMBCLUSTERS;
  97 int     nport = NPROC / 2;
  98
  99 #define MAXSOCKETS NMBCLUSTERS
 100 int     maxsockets = MAXSOCKETS;
 101
 102 /*
 103  *  async IO (aio) configurable limits
 104  */
 105 #define AIO_MAX                         90      /* system wide limit of async IO requests */
 106 #define AIO_PROCESS_MAX         AIO_LISTIO_MAX  /* process limit of async IO requests */
 107 #define AIO_THREAD_COUNT        4       /* number of async IO worker threads created */
 108 int aio_max_requests = AIO_MAX;
 109 int aio_max_requests_per_process = AIO_PROCESS_MAX;
 110 int aio_worker_threads = AIO_THREAD_COUNT;
 111
 112 /*
 113  * These have to be allocated somewhere; allocating
 114  * them here forces loader errors if this file is omitted
 115  * (if they've been externed everywhere else; hah!).
 116  */
 117 struct  callout *callout;
 118 struct  cblock *cfree;
 119 struct  cblock *cfreelist = 0;
 120 int     cfreecount = 0;
 121 struct  buf *buf;
 122 struct  domain *domains;
 123