Search the VMware Knowledge Base (KB)
View by Article ID

Checking the queue depth of the storage adapter and the storage device (1027901)

  • 9 Ratings

Purpose

This article provides the steps to identify the queue depths for the storage adapter and the storage device from the service console of the ESX host or the ESXi shell (Tech Support mode).

Resolution

To identify the storage adapter queue depth:

  1. Run the esxtop command in the service console of the ESX host or the ESXi shell (Tech Support mode). For more information, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.0 (1017910) or Tech Support Mode for Emergency Support (1003677) .
  2. Press d.
  3. Press f and select Queue Stats.
  4. The value listed under AQLEN is the queue depth of the storage adapter. This is the maximum number of ESX VMKernel active commands that the adapter driver is configured to support.

To identify the storage device queue depth:

  1. Run the esxtop command in the service console of the ESX host or the ESXi shell (Tech Support mode). For more information, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.0 (1017910) or Tech Support Mode for Emergency Support (1003677).
  2. Press u.
  3. Press f and select Queue Stats.
  4. The value listed under DQLEN is the queue depth of the storage device. This is the maximum number of ESX VMKernel active commands that the device is configured to support.

Notes:

  • The value listed under LQLEN is the LUN queue depth. This is the maximum number of ESX/ESXi VMkernel active commands supported by the LUN.
  • The value listed under %USD is the percentage of queue depth (adapter, LUN, or world) used by ESX/ESXi VMkernel active commands.

Additional Information

For more information about changing the queue depth, see Changing the Queue Depth for QLogic and Emulex HBAs (1267).

Tags

queue-depth

See Also

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.

Feedback

  • 9 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)




Please enter the Captcha code before clicking Submit.
  • 9 Ratings
Actions
KB: