---
name: "pcp-slabinfo"
section: "1"
platform: "linux"
package: "pcp"
version: "7.2.2-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/pcp-slabinfo"
---

# pcp-slabinfo(1)

Report statistics for kernel slab allocator

## NAME

**pcp-slabinfo** - Report statistics for kernel slab allocator

## SYNOPSIS

**pcp** \[*pcp options*\] **slabinfo** \[**-a** *archive*\] \[**-s** *samples*\] \[**-Z** *timezone*\]

## 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** *file*, **--archive**=*file*

  Fetch /proc/slabinfo for a specified archive *file*

- **-s** *count*, **--samples**=*count*

  Get the slabinfo statistics for specified number of samples *count*

- **-V**, **--version**

  Display version number and exit.

- **-z**, **--hostzone**

  Use the local timezone of the host that is the source of the performance metrics, as identified by either the **-h** or the **-a** options. The default is to use the timezone of the local host.

- **-Z** *timezone*, **--timezone**=*timezone*

  Use *timezone* for the date and time. *Timezone* is in the format of the environment variable **TZ** as described in [**environ**(7)](/environ/7.md).

- **-?**, **--help**

  Display usage message and exit.

## NOTES

**pcp-slabinfo** collects information from */proc/slabinfo*.

## 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)](/pcp.conf/5.md).

For environment variables affecting PCP tools, see [**pmGetOptions**(3)](/pmGetOptions/3.md).

## SEE ALSO

[**PCPIntro**(1)](/PCPIntro/1.md), [**pcp**(1)](/pcp/1.md), [**pmParseInterval**(3)](/pmParseInterval/3.md), [**environ**(7)](/environ/7.md).