proc_pid_timerslack_ns(5) File Formats Manual proc_pid_timerslack_ns(5)
NAME
/proc/pid/timerslack_ns - timer slack in nanoseconds
DESCRIPTION
/proc/pid/timerslack_ns (since Linux 4.6)
This file exposes the process's "current" timer slack value, ex-
pressed in nanoseconds. The file is writable, allowing the
process's timer slack value to be changed. Writing 0 to this
file resets the "current" timer slack to the "default" timer
slack value. For further details, see the discussion of
PR_SET_TIMERSLACK in prctl(2).
Initially, permission to access this file was governed by a
ptrace access mode PTRACE_MODE_ATTACH_FSCREDS check (see
ptrace(2)). However, this was subsequently deemed too strict a
requirement (and had the side effect that requiring a process to
have the CAP_SYS_PTRACE capability would also allow it to view
and change any process's memory). Therefore, since Linux 4.9,
only the (weaker) CAP_SYS_NICE capability is required to access
this file.
SEE ALSO
proc(5)
Linux man-pages 6.9.1 2024-05-02 proc_pid_timerslack_ns(5)
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