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- Add system wide page faults requiring I/O counter.

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Reviewed by:	alc
MFC after:	2 weeks
This commit is contained in:
Andrey Zonov 2013-01-28 12:54:53 +00:00
parent 536368691a
commit b3a01bdf1f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=246032
3 changed files with 5 additions and 2 deletions
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1
sys/sys/vmmeter.h
View file

@ -61,6 +61,7 @@ struct vmmeter {
* Virtual memory activity.
*/
u_int v_vm_faults; /* (p) address memory faults */
u_int v_io_faults; /* (p) page faults requiring I/O */
u_int v_cow_faults; /* (p) copy-on-writes faults */
u_int v_cow_optim; /* (p) optimized copy-on-writes faults */
u_int v_zfod; /* (p) pages zero filled on demand */

5
sys/vm/vm_fault.c
View file

@ -939,9 +939,10 @@ RetryFault:;
* Unlock everything, and return
*/
unlock_and_deallocate(&fs);
if (hardfault)
if (hardfault) {
PCPU_INC(cnt.v_io_faults);
curthread->td_ru.ru_majflt++;
else
} else
curthread->td_ru.ru_minflt++;
return (KERN_SUCCESS);

1
sys/vm/vm_meter.c
View file

@ -283,6 +283,7 @@ VM_STATS_SYS(v_syscall, "System calls");
VM_STATS_SYS(v_intr, "Device interrupts");
VM_STATS_SYS(v_soft, "Software interrupts");
VM_STATS_VM(v_vm_faults, "Address memory faults");
VM_STATS_VM(v_io_faults, "Page faults requiring I/O");
VM_STATS_VM(v_cow_faults, "Copy-on-write faults");
VM_STATS_VM(v_cow_optim, "Optimized COW faults");
VM_STATS_VM(v_zfod, "Pages zero-filled on demand");