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Annotation of 41BSD/sys/h/vmsystm.h, revision 1.1.1.1

1.1       root        1: /*     vmsystm.h       4.1     11/9/80 */
                      2: 
                      3: /*
                      4:  * Miscellaneous virtual memory subsystem variables and structures.
                      5:  */
                      6: 
                      7: 
                      8: #ifdef KERNEL
                      9: int    freemem;                /* remaining blocks of free memory */
                     10: int    avefree;                /* moving average of remaining free blocks */
                     11: int    deficit;                /* estimate of needs of new swapped in procs */
                     12: int    nscan;                  /* number of scans in last second */
                     13: int    multprog;               /* current multiprogramming degree */
                     14: int    desscan;                /* desired pages scanned per second */
                     15: 
                     16: /* writable copies of tunables */
                     17: int    maxpgio;                /* max paging i/o per sec before start swaps */
                     18: int    maxslp;                 /* max sleep time before very swappable */
                     19: int    lotsfree;               /* max free before clock freezes */
                     20: int    minfree;                /* minimum free pages before swapping begins */
                     21: int    desfree;                /* no of pages to try to keep free via daemon */
                     22: int    saferss;                /* no pages not to steal; decays with slptime */
                     23: #endif
                     24: 
                     25: /*
                     26:  * Fork/vfork accounting.
                     27:  */
                     28: struct forkstat
                     29: {
                     30:        int     cntfork;
                     31:        int     cntvfork;
                     32:        int     sizfork;
                     33:        int     sizvfork;
                     34: };
                     35: #ifdef KERNEL
                     36: struct forkstat forkstat;
                     37: #endif
                     38: 
                     39: /*
                     40:  * Swap kind accounting.
                     41:  */
                     42: struct swptstat
                     43: {
                     44:        int     pteasy;         /* easy pt swaps */
                     45:        int     ptexpand;       /* pt expansion swaps */
                     46:        int     ptshrink;       /* pt shrinking swaps */
                     47:        int     ptpack;         /* pt swaps involving spte copying */
                     48: };
                     49: #ifdef KERNEL
                     50: struct swptstat swptstat;
                     51: #endif

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