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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | PCP ENVIRONMENT | SEE ALSO | COLOPHON |
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PCP-SLABINFO(1) General Commands Manual PCP-SLABINFO(1)
pcp-slabinfo - Report statistics for kernel slab allocator
statistics
pcp [pcp options] slabinfo [-s samples] [-a archive] [-Z
--timezone] [-z --hostzone] [-V Version]
The pcp-slabinfo command is used for viewing different stats
related to slab. It helps users analyze useful information
related to the slab allocator. The information includes the
total number of objects that are currently active, allocated
objects, pages per slab, etc. By default, pcp-slabinfo reports
live data for the local host.
The statistics shown are as follows:
HEADER DESCRIPTION
──────────────────────────────────────────────────────────────────
active_objs The number of objects that are currently active
(i.e., in use)
num_objs The total number of allocated objects (i.e.
objects that are both in use and not in use).
objsize The size of objects in this slab, in bytes.
objperslab The number of objects stored in each slab.
pagesperslab The number of pages allocated for each slab
active_slabs The number of active slabs.
num_slabs The total number of slabs.
-a, --archive
Fetch /proc/slabinfo for a specified archive file
-s, --samples
Get the slabinfo 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-slabinfo collects information from /proc/slabinfo 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 2023-12-22.
(At that time, the date of the most recent commit that was found
in the repository was 2023-12-16.) 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-SLABINFO(1)
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HTML rendering created 2023-12-22 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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