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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PCP-BUDDYINFO(1) General Commands Manual PCP-BUDDYINFO(1)
pcp-buddyinfo - Report statistics for buddy algorithm shown in
cat /proc/buddyinfo
pcp [pcp options] buddyinfo [-s samples] [-a archive] [-Z
--timezone] [-z --hostzone] [-V Version]
The pcp-buddyinfo command is used for viewing different stats
related to buddyinfo. It helps users analyze useful information
related to the buddy algorithm. The information includes the
total number of zones that are currently active, order pages etc.
By default, pcp-buddyinfo reports live data for the local host.
The statistics shown are as follows:
HEADER DESCRIPTION
_ _
Normal zones available
Nodes available nodes
Order0 available pages of order 0
Order1 available pages of order 1
Order2 available pages of order 2
Order3 available pages of order 3
Order4 available pages of order 4
Order5 available pages of order 5
Order6 available pages of order 6
Order7 available pages of order 7
Order8 available pages of order 8
Order9 available pages of order 9
Order10 available pages of order 10
Each column represents the number of pages of a certain order (a
certain size) that are available at any given time. For example,
for zone DMA (direct memory access), there are 90 of
2^(0*PAGE_SIZE) chunks of memory. Similarly, there are 6 of
2^(1*PAGE_SIZE) chunks, and 2 of 2^(2*PAGE_SIZE) chunks of memory
available.
The DMA row references the first 16 MB on a system, the HighMem
row references all memory greater than 4 GB on a system, and the
Normal row references all memory in between.
-a, --archive
Fetch /proc/buddyinfo for a specified archive file
-s, --samples
Get the buddyinfo for the specified number of samples
count
-z, --hostzone
Set the reporting timezone to the local time of metrics
source
-Z, --timezone
Set the reporting timezone
-V, --version
Display the version number and exit.
-?, --help
Display the usage message and exit.
pcp-buddyinfo collects information from /proc/buddyinfo and aims
to be command-line and output compatible with it.
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to
specify an alternative configuration file, as described in
pcp.conf(5).
For environment variables affecting PCP tools, see
pmGetOptions(3).
PCPIntro(1), pcp(1), pmParseInterval(3), environ(7).
This page is part of the PCP (Performance Co-Pilot) project.
Information about the project can be found at
⟨http://www.pcp.io/⟩. If you have a bug report for this manual
page, send it to pcp@groups.io. This page was obtained from the
project's upstream Git repository
⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
(At that time, the date of the most recent commit that was found
in the repository was 2024-06-14.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Performance Co-Pilot PCP PCP-BUDDYINFO(1)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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