diff options
| author | Jamie Liu <jamieliu@google.com> | 2018-10-17 15:48:55 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-10-17 15:50:02 -0700 |
| commit | b2a88ff4713325fca736f6a3bf200be02d2d72a7 (patch) | |
| tree | 489e54828c2bfe0bf326976920e5d5e612f877a0 /pkg/sentry/syscalls/linux/sys_rlimit.go | |
| parent | 6922eee6499212a009fdc254224f916bd1c46f29 (diff) | |
Check thread group CPU timers in the CPU clock ticker.
This reduces the number of goroutines and runtime timers when
ITIMER_VIRTUAL or ITIMER_PROF are enabled, or when RLIMIT_CPU is set.
This also ensures that thread group CPU timers only advance if running
tasks are observed at the time the CPU clock advances, mostly
eliminating the possibility that a CPU timer expiration observes no
running tasks and falls back to the group leader.
PiperOrigin-RevId: 217603396
Change-Id: Ia24ce934d5574334857d9afb5ad8ca0b6a6e65f4
Diffstat (limited to 'pkg/sentry/syscalls/linux/sys_rlimit.go')
| -rw-r--r-- | pkg/sentry/syscalls/linux/sys_rlimit.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/pkg/sentry/syscalls/linux/sys_rlimit.go b/pkg/sentry/syscalls/linux/sys_rlimit.go index 481e79eaa..d806b58ab 100644 --- a/pkg/sentry/syscalls/linux/sys_rlimit.go +++ b/pkg/sentry/syscalls/linux/sys_rlimit.go @@ -111,7 +111,7 @@ func prlimit64(t *kernel.Task, resource limits.LimitType, newLim *limits.Limit) } if resource == limits.CPU { - t.ThreadGroup().SetCPUTimer(newLim) + t.NotifyRlimitCPUUpdated() } return oldLim, nil } |