---
name: "pcp-numastat"
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-numastat"
---

# pcp-numastat(1)

report on NUMA memory allocation

## NAME

**pcp-numastat** - report on NUMA memory allocation

## SYNOPSIS

**pcp** \[*pcp options*\] **numastat** \[**-mnV?**\] \[**-w** *width*\] \[**-p** \[*process* ...\]\]

## DESCRIPTION

**pcp-numastat** displays NUMA allocation statistics from the kernel memory allocator. Each process has NUMA policies that specify on which node pages are allocated. The performance counters in the kernel track on which nodes memory is allocated and these values are sampled and reported by **pcp-numastat**.

Counters are maintained individually for each NUMA node. Details of the semantics of each reported metric can be retrieved using the following command:

```
# pminfo ‐dt mem.numa.alloc
```

## OPTIONS

`When invoked via the` [**pcp**(1)](/pcp/1.md) `command, the` **-h**/ **--host**, **-a**/ **--archive**, **-O**/ **--origin**, **-Z**/ **--timezone** `and several other` *pcp options* `become indirectly available; refer to` [**PCPIntro**(1)](/PCPIntro/1.md) `for a complete description of these options.`

`The additional command line options available for` **pcp-numastat** `are:`

- **-m**, **--meminfo**

  Display meminfo-like system-wide memory usage.

- **-n**, **--numastat**

  Display the numastat statistics info.

- **-p**, **--process**

  Display per-process NUMA memory usage from **proc.numa\_maps** metrics. Any trailing *process* operands are treated as process IDs (when the operand is all digits) or regular expressions for command name matching. Matching for command names is performed against the full command line (as reported by **proc.psinfo.psargs**). When a single process ID operand is provided and it matches exactly one process, a detailed table of Hugepage, Heap, Stack and Private mappings is shown (as in **numastat -p**). When multiple process ID operands are provided, a per-process summary table is shown (also like **numastat -p**) and may be split into multiple node column blocks based on the available display width.

In the per-process view, node columns are always shown for all NUMA nodes present on the system (as reported by PCP NUMA inventory metrics), even if individual **proc.numa\_maps** metric instances omit some nodes. Missing per-process metrics are reported as zero.

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

  Display the current version of the command.

- **-w** *width*, **--width**=*width*

  Limit display to *width*.

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

  Display usage message and exit.

## NOTES

**pcp-numastat** is inspired by the **numastat**(1) command and produces the same output for the system-wide views. The per-process view (**-p**) follows the **numastat -p** layout.

## 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) and **numastat**(1).