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jc.parsers.vmstat

jc - JSON Convert vmstat command output parser

Options supported: -a, -w, -d, -t

The epoch calculated timestamp field is naive. (i.e. based on the local time of the system the parser is run on)

The epoch_utc calculated timestamp field is timezone-aware and is only available if the timezone field is UTC.

Usage (cli):

$ vmstat | jc --vmstat

or

$ jc vmstat

Usage (module):

import jc
result = jc.parse('vmstat', vmstat_command_output)

Schema:

[
  {
    "runnable_procs":                    integer,
    "uninterruptible_sleeping_procs":    integer,
    "virtual_mem_used":                  integer,
    "free_mem":                          integer,
    "buffer_mem":                        integer,
    "cache_mem":                         integer,
    "inactive_mem":                      integer,
    "active_mem":                        integer,
    "swap_in":                           integer,
    "swap_out":                          integer,
    "blocks_in":                         integer,
    "blocks_out":                        integer,
    "interrupts":                        integer,
    "context_switches":                  integer,
    "user_time":                         integer,
    "system_time":                       integer,
    "idle_time":                         integer,
    "io_wait_time":                      integer,
    "stolen_time":                       integer,
    "disk":                              string,
    "total_reads":                       integer,
    "merged_reads":                      integer,
    "sectors_read":                      integer,
    "reading_ms":                        integer,
    "total_writes":                      integer,
    "merged_writes":                     integer,
    "sectors_written":                   integer,
    "writing_ms":                        integer,
    "current_io":                        integer,
    "io_seconds":                        integer,
    "timestamp":                         string,
    "timezone":                          string,
    "epoch":                             integer,     # [0]
    "epoch_utc":                         integer      # [1]
  }
]

[0] naive timestamp if -t flag is used
[1] aware timestamp if -t flag is used and UTC TZ

Examples:

$ vmstat | jc --vmstat -p
[
  {
    "runnable_procs": 2,
    "uninterruptible_sleeping_procs": 0,
    "virtual_mem_used": 0,
    "free_mem": 2794468,
    "buffer_mem": 2108,
    "cache_mem": 741208,
    "inactive_mem": null,
    "active_mem": null,
    "swap_in": 0,
    "swap_out": 0,
    "blocks_in": 1,
    "blocks_out": 3,
    "interrupts": 29,
    "context_switches": 57,
    "user_time": 0,
    "system_time": 0,
    "idle_time": 99,
    "io_wait_time": 0,
    "stolen_time": 0,
    "timestamp": null,
    "timezone": null
  }
]

$ vmstat | jc --vmstat -p -r
[
  {
    "runnable_procs": "2",
    "uninterruptible_sleeping_procs": "0",
    "virtual_mem_used": "0",
    "free_mem": "2794468",
    "buffer_mem": "2108",
    "cache_mem": "741208",
    "inactive_mem": null,
    "active_mem": null,
    "swap_in": "0",
    "swap_out": "0",
    "blocks_in": "1",
    "blocks_out": "3",
    "interrupts": "29",
    "context_switches": "57",
    "user_time": "0",
    "system_time": "0",
    "idle_time": "99",
    "io_wait_time": "0",
    "stolen_time": "0",
    "timestamp": null,
    "timezone": null
  }
]

parse

def parse(data, raw=False, quiet=False)

Main text parsing function

Parameters:

data:        (string)  text data to parse
raw:         (boolean) unprocessed output if True
quiet:       (boolean) suppress warning messages if True

Returns:

List of Dictionaries. Raw or processed structured data.

Parser Information

Compatibility: linux

Source: jc/parsers/vmstat.py

Version 1.4 by Kelly Brazil (kellyjonbrazil@gmail.com)