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CPU times of the process

Source: R/low-level.R
ps_cpu_times.Rd

All times are measured in seconds:

  • user: Amount of time that this process has been scheduled in user mode.

  • system: Amount of time that this process has been scheduled in kernel mode

  • children_user: On Linux, amount of time that this process's waited-for children have been scheduled in user mode.

  • children_system: On Linux, Amount of time that this process's waited-for children have been scheduled in kernel mode.

Usage

ps_cpu_times(p = ps_handle())

Arguments

p

Process handle.

Value

Named real vector or length four: user, system, children_user, children_system. The last two are NA on non-Linux systems.

Details

Throws a zombie_process() error for zombie processes.

See also

Other process handle functions: ps_children(), ps_cmdline(), ps_connections(), ps_create_time(), ps_cwd(), ps_descent(), ps_environ(), ps_exe(), ps_handle(), ps_interrupt(), ps_is_running(), ps_kill(), ps_memory_info(), ps_name(), ps_num_fds(), ps_num_threads(), ps_open_files(), ps_pid(), ps_ppid(), ps_resume(), ps_send_signal(), ps_shared_libs(), ps_status(), ps_suspend(), ps_terminal(), ps_terminate(), ps_uids(), ps_username()

Examples

p <- ps_handle()
p
#> <ps::ps_handle> PID=6015, NAME=R, AT=2024-10-29 08:51:51.83
ps_cpu_times(p)
#>            user          system   children_user children_system 
#>            7.00            0.50            1.17            0.87 
proc.time()
#>    user  system elapsed 
#>   8.187   1.378  12.445