An os_mon replacement.

• monarch:machine()

    #{'machine'  => :: binary(),     % ex. <<"x86_64">>
      'memsize'  => :: integer(),    % ex. 17179869184
      'model'    => :: binary(),     % ex. <<"iMac12,2">>
      'ncpu'     => :: integer(),    % ex. 4
      'pagesize' => :: integer()}    % ex. 4096

• monarch:memory()

    #{'active'   => integer(),    % ex. 1436594176,
      'free'     => integer(),    % ex. 14308564992,
      'inactive' => integer(),    % ex. 227401728,
      'total'    => integer(),    % ex. 17177673728,
      'wired'    => integer()}    % ex. 1205112832

• monarch:cpu_util()

    #{'soft_irq'  => float(),    % ex.  0.018104462
      'hard_irq'  => float(),    % ex.  0.0
      'kernel'    => float(),    % ex.  0.226
      'nice_user' => float(),    % ex.  0.00901
      'steal'     => float(),    % ex.  0.0
      'user'      => float(),    % ex.  0.869
      'steal'     => float(),    % ex.  0.0
      'wait'      => float(),    % ex. 98.08
      'idle'      => float()}    % ex.  0.78

• monarch:disks()

    [#{'bfree'      => integer(),  % ex. 45058684
       'blocks'     => integer(),  % ex. 243980744
       'mountpoint' => binary()}]  % ex. <<"/">>

• monarch:processes()

    [#{'name'      => binary(),    % ex. <<"beam.smp">>
       'pid'       => integer(),   % ex. 54426
       'pgid'      => integer(),   % ex. 54426
       'ppid'      => integer(),   % ex. 18665
       'starttime' => integer(),   % ex. 1427997920
       'state'     => integer(),   % ex. 2
       'uid'       => integer(),   % ex. 501
       'user'      => binary()}]   % ex. <<"egil">>

os_mon feature areas:

• cpu_sup - CPU load and utilization supervision (Unix)
• memsup - Memory supervision (Unix, Windows, VxWorks)
• disksup - Disk supervision(Unix, Windows)
• os_sup - Interface to OS system messages (Solaris, Windows)

Previous OS_Mon Interface:

• nprocs() -> integer() | {error, Reason :: term()}

• avg1() -> SystemLoad :: float() | {error, Reason :: term()}

• avg5() -> SystemLoad :: float() | {error, Reason :: term()}

• avg15() -> SystemLoad :: float() | {error, Reason :: term()}

• util() -> CpuUtil | {error, Reason}

• util(Opts) -> UtilSpec | {error, Reason}

Previous OS_Mon Interface:

• get_memory_data() -> {Total :: integer(), Allocated :: integer(), Worst :: {pid(), integer()}

• get_system_memory_data() -> [{ 'total_memory' | 'free_memory' .. , integer()}

• get_wordsize() -> 32 | 64 | unsupported_os

• get_check_interval() -> MS :: integer()

• set_check_interval(Minutes :: non_neg_integer()) -> ok

• get_procmem_high_watermark() -> integer()

• set_procmem_high_watermark(Float :: float()) -> ok

• get_helper_timeout() -> Seconds :: integer()

• set_helper_timeout(Seconds :: integer()) -> ok

Previous OS_Mon Interface:

• get_disk_data() -> [{Id :: string(), KByte :: integer(), Capacity :: integer()}]
• get_check_interval() -> MS :: non_neg_integer()
• get_almost_full_threshold() -> Percent :: 0..100
• set_almost_full_threshold(Float :: float()) -> ok

• Load Average
• Runnable
• CPU Utilization
• Per-CPU Utilization
• Context Switches

• Memory Utilization
• Page Faults

• Disk IOPS
• Disk Throughput
• Disk Utilization
• Disk Latency

• Network Drops
• TCP Retransmits
• TCP Connections
• Network Throughput
• Network Packets