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Change swapping policy to be a bit more aggressive about finding a

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candidate for swapout. Increased default RSS limit to a minimum of 2MB.
This commit is contained in:
David Greenman 1994-12-18 06:31:31 +00:00
parent 931bde7f72
commit dd0bd066e0
1 changed files with 6 additions and 5 deletions
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11
sys/vm/vm_glue.c
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@ -59,7 +59,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_glue.c,v 1.8 1994/10/09 01:52:08 phk Exp $
* $Id: vm_glue.c,v 1.9 1994/11/13 12:47:07 davidg Exp $
*/
#include <sys/param.h>
@ -288,8 +288,8 @@ vm_init_limits(p)
p->p_rlimit[RLIMIT_STACK].rlim_max = MAXSSIZ;
p->p_rlimit[RLIMIT_DATA].rlim_cur = DFLDSIZ;
p->p_rlimit[RLIMIT_DATA].rlim_max = MAXDSIZ;
/* limit the limit to no less than 128K */
rss_limit = max(cnt.v_free_count / 2, 32);
/* limit the limit to no less than 2MB */
rss_limit = max(cnt.v_free_count / 2, 512);
p->p_rlimit[RLIMIT_RSS].rlim_cur = ptoa(rss_limit);
p->p_rlimit[RLIMIT_RSS].rlim_max = RLIM_INFINITY;
}
@ -522,10 +522,11 @@ swapout_threads()
* If the process has been asleep for awhile and had most
* of its pages taken away already, swap it out.
*/
if ((p->p_slptime > maxslp) && (p->p_vmspace->vm_pmap.pm_stats.resident_count <= 6)) {
if (p->p_slptime > maxslp) {
swapout(p);
didswap++;
} else if ((tpri = p->p_slptime + p->p_nice * 8) > outpri) {
} else if ((tpri = p->p_slptime + p->p_nice * 8) > outpri &&
(p->p_vmspace->vm_pmap.pm_stats.resident_count <= 6)) {
outp = p;
outpri = tpri ;
}