DMesgLineList - command dmesg

DMesgLineList is a simple parser that is based on the LogFileOutput parser class.

It provides one additional helper method not included in LogFileOutput:

  • has_startswith - does the log contain any line that starts with the given string?

Sample input:

[    0.000000] Linux version 3.10.0-327.36.3.el7.x86_64 ( (gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC) ) #1 SMP Thu Oct 20 04:56:07 EDT 2016
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-327.36.3.el7.x86_64 root=/dev/RHEL7CSB/Root ro rd.luks.uuid=luks-96c66446-77fd-4431-9508-f6912bd84194 crashkernel=auto vconsole.keymap=us vconsole.font=latarcyrheb-sun16 rhgb quiet LANG=en_GB.utf8
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] x86/fpu: xstate_offset[2]: 0240, xstate_sizes[2]: 0100
[    0.000000] xsave: enabled xstate_bv 0x7, cntxt size 0x340
[    0.000000] AGP: Checking aperture...
[    0.000000] AGP: No AGP bridge found
[    0.000000] Memory: 15918544k/17274880k available (6444k kernel code, 820588k absent, 535748k reserved, 4265k data, 1632k init)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=1
[    0.000000] Hierarchical RCU implementation.


>>> dmesg = shared[DmesgLineList]
>>> 'BOOT_IMAGE' in dmesg
>>> dmesg.get('AGP')
['[    0.000000] AGP: Checking aperture...', '[    0.000000] AGP: No AGP bridge found']
class insights.parsers.dmesg.DmesgLineList(context, extra_bad_lines=None)[source]

Bases: insights.core.CommandParser, insights.core.LogFileOutput

Class for reading output of dmesg using the LogFileOutput parser class.


Please refer to its super-class insights.core.LogFileOutput

get_after(timestamp, s=None)[source]

Find all the (available) logs that are after the given time stamp.

If s is not supplied, then all lines are used. Otherwise, only the lines contain the s are used. s can be either a single string or a strings list. For list, all keywords in the list must be found in the line.


The time stamp is the floating point number of seconds after the boot time, and is not related to an actual datetime. If a time stamp is not found on the line between square brackets, then it is treated as a continuation of the previous line and is only included if the previous line’s timestamp is greater than the timestamp given. Because continuation lines are only included if a previous line has matched, this means that searching in logs that do not have a time stamp produces no lines.

  • timestamp (float) -- log lines after this time are returned.

  • s (str or list) -- one or more strings to search for. If not supplied, all available lines are searched.


Log lines with time stamps after the given time.


TypeError -- The timestamp should be in float type, otherwise a TypeError will be raised.


prefix (str) -- The prefix of the line to look for. Ignores any timestamp before the message body.


Does any line start with the given prefix?

Return type



prefix (str) -- The prefix of the line to look for. Ignores any timestamp.


All logs start with the given prefix without timestamp.

Return type