Hasnain says:

This was an interesting debugging story.

“Unbelievable! All the counters were zero! ZFS really wasn't in use, ever! But at the same time, it was eating over 30% of CPU capacity! Whaaat??

The customer had been right all along. ZFS was straight up eating CPU, and for no reason.

How can a file system that's not in use at all consume 38% CPU? I'd never seen this before. This was a mystery.”

Posted on 2021-09-06T04:37:56+0000