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Add mibs to hold the number of forks since boot. New mibs are:

Browse Source 
vm.stats.vm.v_forks
	vm.stats.vm.v_vforks
	vm.stats.vm.v_rforks
	vm.stats.vm.v_kthreads
	vm.stats.vm.v_forkpages
	vm.stats.vm.v_vforkpages
	vm.stats.vm.v_rforkpages
	vm.stats.vm.v_kthreadpages

Submitted by:	Paul Herman <pherman@frenchfries.net>
Reviewed by:	alfred
This commit is contained in:
Hajimu UMEMOTO 2001-01-23 14:32:01 +00:00
parent f2334c4082
commit 5d22597f3a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=71429
4 changed files with 50 additions and 0 deletions
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15
sys/kern/kern_fork.c
View File

@ -65,6 +65,7 @@
#include <vm/vm_extern.h>
#include <vm/vm_zone.h>
#include <sys/vmmeter.h>
#include <sys/user.h>
static MALLOC_DEFINE(M_ATFORK, "atfork", "atfork callback");
@ -517,6 +518,20 @@ fork1(p1, flags, procp)
*/
vm_fork(p1, p2, flags);
if (flags == (RFFDG | RFPROC)) {
cnt.v_forks++;
cnt.v_forkpages += p2->p_vmspace->vm_dsize + p2->p_vmspace->vm_ssize;
} else if (flags == (RFFDG | RFPROC | RFPPWAIT | RFMEM)) {
cnt.v_vforks++;
cnt.v_vforkpages += p2->p_vmspace->vm_dsize + p2->p_vmspace->vm_ssize;
} else if (p1 == &proc0) {
cnt.v_kthreads++;
cnt.v_kthreadpages += p2->p_vmspace->vm_dsize + p2->p_vmspace->vm_ssize;
} else {
cnt.v_rforks++;
cnt.v_rforkpages += p2->p_vmspace->vm_dsize + p2->p_vmspace->vm_ssize;
}
/*
* Both processes are set up, now check if any loadable modules want
* to adjust anything.

11
sys/sys/vmmeter.h
View File

@ -92,6 +92,17 @@ struct vmmeter {
u_int v_pageout_free_min; /* min number pages reserved for kernel */
u_int v_interrupt_free_min; /* reserved number of pages for int code */
u_int v_free_severe; /* severe depletion of pages below this pt */
/*
* Fork/vfork/rfork activity.
*/
u_int v_forks; /* number of fork() calls */
u_int v_vforks; /* number of vfork() calls */
u_int v_rforks; /* number of rfork() calls */
u_int v_kthreads; /* number of fork() calls by kernel */
u_int v_forkpages; /* number of VM pages affected by fork() */
u_int v_vforkpages; /* number of VM pages affected by vfork() */
u_int v_rforkpages; /* number of VM pages affected by rfork() */
u_int v_kthreadpages; /* number of VM pages affected by fork() by kernel */
};
#ifdef _KERNEL

16
sys/vm/vm_meter.c
View File

@ -323,6 +323,22 @@ SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_interrupt_free_min, CTLFLAG_RD, &cnt.v_interrupt_free_min, 0, "");
SYSCTL_INT(_vm_stats_misc, OID_AUTO,
zero_page_count, CTLFLAG_RD, &vm_page_zero_count, 0, "");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_forks, CTLFLAG_RD, &cnt.v_forks, 0, "Number of fork() calls");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_vforks, CTLFLAG_RD, &cnt.v_vforks, 0, "Number of vfork() calls");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_rforks, CTLFLAG_RD, &cnt.v_rforks, 0, "Number of rfork() calls");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_kthreads, CTLFLAG_RD, &cnt.v_kthreads, 0, "Number of fork() calls by kernel");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_forkpages, CTLFLAG_RD, &cnt.v_forkpages, 0, "VM pages affected by fork()");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_vforkpages, CTLFLAG_RD, &cnt.v_vforkpages, 0, "VM pages affected by vfork()");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_rforkpages, CTLFLAG_RD, &cnt.v_rforkpages, 0, "VM pages affected by rfork()");
SYSCTL_UINT(_vm_stats_vm, OID_AUTO,
v_kthreadpages, CTLFLAG_RD, &cnt.v_kthreadpages, 0, "VM pages affected by fork() by kernel");
#if 0
SYSCTL_INT(_vm_stats_misc, OID_AUTO,
page_mask, CTLFLAG_RD, &page_mask, 0, "");

8
usr.bin/vmstat/vmstat.c
View File

@ -600,6 +600,10 @@ dosum()
(void)printf("%9u software interrupts\n", sum.v_soft);
(void)printf("%9u traps\n", sum.v_trap);
(void)printf("%9u system calls\n", sum.v_syscall);
(void)printf("%9u kernel threads created\n", sum.v_kthreads);
(void)printf("%9u fork() calls\n", sum.v_forks);
(void)printf("%9u vfork() calls\n", sum.v_vforks);
(void)printf("%9u rfork() calls\n", sum.v_rforks);
(void)printf("%9u swap pager pageins\n", sum.v_swapin);
(void)printf("%9u swap pager pages paged in\n", sum.v_swappgsin);
(void)printf("%9u swap pager pageouts\n", sum.v_swapout);
@ -617,6 +621,10 @@ dosum()
(void)printf("%9u zero fill pages prezeroed\n", sum.v_ozfod);
(void)printf("%9u intransit blocking page faults\n", sum.v_intrans);
(void)printf("%9u total VM faults taken\n", sum.v_vm_faults);
(void)printf("%9u pages affected by kernel thread creation\n", sum.v_kthreadpages);
(void)printf("%9u pages affected by fork()\n", sum.v_forkpages);
(void)printf("%9u pages affected by vfork()\n", sum.v_vforkpages);
(void)printf("%9u pages affected by rfork()\n", sum.v_rforkpages);
(void)printf("%9u pages freed\n", sum.v_tfree);
(void)printf("%9u pages freed by daemon\n", sum.v_dfree);
(void)printf("%9u pages freed by exiting processes\n", sum.v_pfree);