RAppArmor (version 1.0.0)

rlimit_nice: Limit nice value.

Description

Specifies a ceiling to which the process's nice value can be raised using setpriority(2) or nice(2).

Usage

rlimit_nice(hardlim, softlim = hardlim, pid = 0,
    verbose = FALSE)

Arguments

hardlim

priority value between -20 and 20

softlim

priority value between -20 and 20

pid

id of the target process

verbose

print some C output (TRUE/FALSE)

Details

Specifies a ceiling to which the process's nice value can be raised using setpriority(2) or nice(2). The actual ceiling for the nice value is calculated as 20 - rlim_cur. (This strangeness occurs because negative numbers cannot be specified as resource limit values, since they typically have special meanings. For example, RLIM_INFINITY typically is the same as -1.)

References

Jeroen Ooms (2013). The RAppArmor Package: Enforcing Security Policies in {R} Using Dynamic Sandboxing on Linux. Journal of Statistical Software, 55(7), 1-34. http://www.jstatsoft.org/v55/i07/.

Ubuntu Manpage: getrlimit, setrlimit - get/set resource limits. http://manpages.ubuntu.com/manpages/precise/man2/getrlimit.2.html.

See Also

Other rlimit: rlimit_as, rlimit_core, rlimit_cpu, rlimit_data, rlimit_fsize, rlimit_memlock, rlimit_msgqueue, rlimit_nofile, rlimit_nproc, rlimit_rtprio, rlimit_rttime, rlimit_sigpending, rlimit_stack

Examples

#load lib
library(RAppArmor)

#current limit
rlimit_as();

#set hard limit
rlimit_as(1e9);

#set separate hard and soft limit. 
rlimit_as(1e9, 1e8);

#soft limits can be elevated
rlimit_as(soft = 1e7);
rlimit_as(soft = 1e9);

#set other limits
rlimit_core(1e9);
rlimit_data(1e9);
rlimit_fsize(1e9);
rlimit_memlock(10000);
rlimit_msgqueue(1e5);
rlimit_nofile(10);
rlimit_nproc(100);
rlimit_rttime(1e9);
rlimit_sigpending(1e4);
rlimit_stack(1000);
rlimit_cpu(60);