/* * Copyright (c) 1982, 1986 Regents of the University of California. * All rights reserved. The Berkeley software License Agreement * specifies the terms and conditions for redistribution. * * @(#)vmsystm.h 7.1 (Berkeley) 6/4/86 */ /* * Miscellaneous virtual memory subsystem variables and structures. */ #ifdef KERNEL int freemem; /* remaining blocks of free memory */ int avefree; /* moving average of remaining free blocks */ int avefree30; /* 30 sec (avefree is 5 sec) moving average */ int deficit; /* estimate of needs of new swapped in procs */ int nscan; /* number of scans in last second */ int multprog; /* current multiprogramming degree */ int desscan; /* desired pages scanned per second */ /* writable copies of tunables */ int maxpgio; /* max paging i/o per sec before start swaps */ int maxslp; /* max sleep time before very swappable */ int lotsfree; /* max free before clock freezes */ int minfree; /* minimum free pages before swapping begins */ int desfree; /* no of pages to try to keep free via daemon */ int saferss; /* no pages not to steal; decays with slptime */ int slowscan; /* slowest scan rate, clusters/second */ int fastscan; /* fastest scan rate, clusters/second */ #endif /* * Fork/vfork accounting. */ struct forkstat { int cntfork; int cntvfork; int sizfork; int sizvfork; }; #ifdef KERNEL struct forkstat forkstat; #endif /* * Swap kind accounting. */ struct swptstat { int pteasy; /* easy pt swaps */ int ptexpand; /* pt expansion swaps */ int ptshrink; /* pt shrinking swaps */ int ptpack; /* pt swaps involving spte copying */ }; #ifdef KERNEL struct swptstat swptstat; #endif