---
name: "opatop"
section: "8"
platform: "linux"
package: "opa-fastfabric"
version: "10.10.3.0.11-1+b2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/opatop"
---

# opatop(8)

## NAME

opatop

Starts the Fabric Performance Monitor (opatop) Text-based User Interface (TUI) menu to display performance, congestion, and error information about a fabric.

## Syntax

opatop \[-v\] \[-q\] \[-h  *hfi*\] \[-p  *port*\] \[--timeout\] \[-i  *seconds*\]

## Options

- \--help

  Produces full help text.

- \-v/--verbose level

  Specifies the verbose output level. Value is additive and includes:

  - 1

    Screen

  - 4

    STDERR opatop

  - 16

    STDERR PaClient

- \-q/--quiet

  Disables progress reports.

- \-h/--hfi *hfi*

  Specifies the HFI, numbered 1..n. Using 0 specifies that the -p *port* port is a system-wide port number. Default is 0.

- \-p/--port *port*

  Specifies the port, numbered 1..n. Using 0 specifies the first active port. Default is 0.

- \--timeout

  Specifies the timeout (response wait time) in ms. Default is 1000 ms.

- \-i/--interval *seconds*

  Interval in *seconds* at which PA queries are performed to refresh to the latest PA image. Default is 10 seconds.

## -h and -p options permit a variety of selections:

- \-h 0

  First active port in system (Default).

- \-h 0 -p 0

  First active port in system.

- \-h *x*

  First active port on HFI *x*.

- \-h *x* -p 0

  First active port on HFI *x*.

- \-h 0 -p *y*

  Port *y* within system (no matter which ports are active).

- \-h *x* -p *y*

  HFI *x*, port *y*.