---
name: "cxl-monitor"
section: "1"
platform: "linux"
package: "ndctl"
version: "85-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/cxl-monitor"
---

# cxl-monitor(1)

Monitor the CXL trace events

## NAME

cxl-monitor - Monitor the CXL trace events

## SYNOPSIS

```
cxl monitor [<options>]
```

## DESCRIPTION

cxl-monitor is used for monitoring the CXL trace events emitted by the kernel and convert them to json objects and dumping the json format notifications to standard output or a logfile.

## EXAMPLES

Run a monitor as a daemon to monitor events and output to a log file.

```
cxl monitor --daemon --log=/var/log/cxl-monitor.log
```

Run a monitor as a one-shot command and output the notifications to stdio.

```
cxl monitor
```

Run a monitor daemon as a system service

```
systemctl start cxl-monitor.service
```

## OPTIONS

\-l, --log=

Send log messages to the specified destination.

• "\<file\>": Send log messages to specified \<file\>.

• "standard": Send messages to standard output.

The default log destination is */var/log/cxl-monitor.log* if "--daemon" is specified, otherwise *standard*. Note that standard and relative path for \<file\> will not work if "--daemon" is specified.

- \--daemon

  Run a monitor as a daemon.

- \-v, --verbose

  Emit more debug messages

- \-u, --human

  By default the command will output machine-friendly raw-integer data. Instead, with this flag, numbers representing storage size will be formatted as human readable strings with units, other fields are converted to hexadecimal strings.

## COPYRIGHT

Copyright © 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2  \<http://gnu.org/licenses/gpl.html\>. This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

## SEE ALSO

[cxl-list(1)](/cxl-list/1.md)