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38 * @(#)param.c 8.3 (Berkeley) 8/20/94
42 #include "opt_param.h"
44 #include <sys/param.h>
47 * System parameter formulae.
49 * This file is copied into each directory where we compile
50 * the kernel; it should be modified there to suit local taste
53 * Compiled with -DMAXUSERS=xx
60 int tick = 1000000 / HZ;
61 int tickadj = howmany(30000, 60 * HZ); /* can adjust 30ms in 60s */
62 #define NPROC (20 + 16 * MAXUSERS)
64 #define MAXFILES (NPROC*2)
66 int maxproc = NPROC; /* maximum # of processes */
67 int maxprocperuid = NPROC-1; /* max # of procs per user */
68 int maxfiles = MAXFILES; /* sys. wide open files limit */
69 int maxfilesperproc = MAXFILES; /* per-proc open files limit */
70 int ncallout = 16 + NPROC + MAXFILES; /* maximum # of timer events */
73 * These may be set to nonzero here or by patching.
74 * If they are nonzero at bootstrap time then they are
75 * initialized to values dependent on the memory size.
85 * These have to be allocated somewhere; allocating
86 * them here forces loader errors if this file is omitted
87 * (if they've been externed everywhere else; hah!).
92 * Total number of shared mutexes to protect all lockmgr locks.
97 int lock_nmtx = LOCKMUTEX;