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| author | trasz <trasz@FreeBSD.org> | 2016-04-07 04:23:25 +0000 |
|---|---|---|
| committer | trasz <trasz@FreeBSD.org> | 2016-04-07 04:23:25 +0000 |
| commit | 825d80e01c65efad6bfe7302038a657bbc08e06a (patch) | |
| tree | 38459686f8eedbb80701f99097b1b51ee3363aa8 /sys/vm/vm_fault.c | |
| parent | cc1aaf5a1a88524a7d9ff817b98dcfb66049f5f8 (diff) | |
| download | FreeBSD-src-825d80e01c65efad6bfe7302038a657bbc08e06a.zip FreeBSD-src-825d80e01c65efad6bfe7302038a657bbc08e06a.tar.gz | |
Add four new RCTL resources - readbps, readiops, writebps and writeiops,
for limiting disk (actually filesystem) IO.
Note that in some cases these limits are not quite precise. It's ok,
as long as it's within some reasonable bounds.
Testing - and review of the code, in particular the VFS and VM parts - is
very welcome.
MFC after: 1 month
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D5080
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index a7e3d37..13a5757 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -83,6 +83,7 @@ __FBSDID("$FreeBSD$"); #include <sys/lock.h> #include <sys/mman.h> #include <sys/proc.h> +#include <sys/racct.h> #include <sys/resourcevar.h> #include <sys/rwlock.h> #include <sys/sysctl.h> @@ -994,6 +995,21 @@ vnode_locked: if (hardfault) { PCPU_INC(cnt.v_io_faults); curthread->td_ru.ru_majflt++; +#ifdef RACCT + if (racct_enable && fs.object->type == OBJT_VNODE) { + PROC_LOCK(curproc); + if ((fault_type & (VM_PROT_COPY | VM_PROT_WRITE)) != 0) { + racct_add_force(curproc, RACCT_WRITEBPS, + PAGE_SIZE + behind * PAGE_SIZE); + racct_add_force(curproc, RACCT_WRITEIOPS, 1); + } else { + racct_add_force(curproc, RACCT_READBPS, + PAGE_SIZE + ahead * PAGE_SIZE); + racct_add_force(curproc, RACCT_READIOPS, 1); + } + PROC_UNLOCK(curproc); + } +#endif } else curthread->td_ru.ru_minflt++; |
