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Length: 2216 (0x8a8)
Types: TextFile
Notes: UNIX file
Names: »tuneable.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/tuneable.h«
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
/* The copyright notice above does not evidence any */
/* actual or intended publication of such source code. */
#ident "@(#)tuneable.h 1.3"
typedef struct tune {
int t_gpgslo; /* If freemem < t_getpgslow, then start */
/* to steal pages from processes. */
int t_gpgshi; /* Once we start to steal pages, don't */
/* stop until freemem > t_getpgshi. */
int t_gpgsmsk; /* Mask used by getpages to determine */
/* whether a page is stealable. The */
/* page is stealable if pte & t_gpgsmsk */
/* is == 0. Possible values for this */
/* mask are: */
/* 0 - steal any valid page. */
/* PG_REF - steal page if not */
/* referenced in */
/* t_vhandr seconds. */
/* mask = 0x00000001 */
/* PG_REF|PG_NDREF - steal page if not */
/* referenced in 2 * */
/* t_vhandr seconds. */
/* mask = 0x08000001 */
int t_vhandr; /* Run vhand once every t_vhandr seconds*/
/* if freemem < t_vhandl. */
int t_vhandl; /* Run vhand once every t_vhandr seconds*/
/* if freemem < t_vhandl. */
int t_maxsc; /* The maximum number of pages which */
/* will be swapped out in a single */
/* operation. Cannot be larger than */
/* MAXSPGLST in getpages.h. */
int t_maxfc; /* The maximum number of pages which */
/* will be saved up and freed at once. */
/* Cannot be larger than MAXFPGLST in */
/* getpages.h. */
int t_maxumem; /* The maximum size of a user's virtual */
/* address space in pages. */
int t_bdflushr; /* The rate at which bdflush is run in */
/* seconds. */
int t_minarmem; /* The minimum available resident (not */
/* swapable) memory to maintain in */
/* order to avoid deadlock. In pages. */
int t_minasmem; /* The minimum available swapable */
/* memory to maintain in order to avoid */
/* deadlock. In pages. */
} tune_t;
extern tune_t tune;
/* The following is the default value for t_gpgsmsk. It cannot be
* defined in /etc/master or /etc/system due to limitations of the
* config program.
*/
#define GETPGSMSK PG_REF|PG_NDREF