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Status Future consideration
Created by Guest
Created on Nov 30, 2022

Add aborted command/transfer metrics to SI

Spec V systems don't incorporate response time metrics into the performance stats for IOs that were aborted. The hosts would have actually been impacted by these IOs because IOs are typically aborted once they have hit some kind of timeout value. So under these scenarios the Spec V response time stats would show no indication of a problem but the host would have experienced performance impact.

The aborted command metrics should allow us to identify this type of scenario.

https://www.ibm.com/docs/en/flashsystem-9x00/8.5.x?topic=bpt-starting-statistics-collection-3

har

Indicates the count aborted host read operations aborted while a data transfer was in progress. This count includes I/O operations aborted by hosts, and those operations aborted internally by the system.

haw

Indicates the count aborted host write operations aborted while a data transfer was in progress. This count includes I/O operations aborted by hosts, and those operations aborted internally by the system.

Idea priority Medium