table of contents
| PCP-SLABINFO(1) | General Commands Manual | PCP-SLABINFO(1) |
NAME¶
pcp-slabinfo - Report statistics for kernel slab allocator statistics
SYNOPSIS¶
pcp [pcp options] slabinfo [-s samples] [-a archive] [-Z --timezone] [-z --hostzone] [-V Version]
DESCRIPTION¶
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. |
OPTIONS¶
- -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.
NOTES¶
pcp-slabinfo collects information from /proc/slabinfo and aims to be command-line and output compatible with it.
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¶
| PCP | Performance Co-Pilot |