pcp-buddyinfo - Report statistics for buddy algorithm shown in cat /proc/buddyinfo
Contents
Description
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:
HEADERDESCRIPTION
_ _
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.
Name
pcp-buddyinfo - Report statistics for buddy algorithm shown in cat /proc/buddyinfoNotes
pcp-buddyinfo collects information from /proc/buddyinfo and aims to be command-line and output compatible
with it.
Options
-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 Environment
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).
See Also
PCPIntro(1),pcp(1),pmParseInterval(3),environ(7). Performance Co-Pilot PCP PCP-BUDDYINFO(1)
Synopsis
pcp [pcpoptions] buddyinfo [-ssamples] [-aarchive] [-Z--timezone] [-z--hostzone] [-VVersion]
