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by mustache_kimono 284 days ago
Reminds me of Brendan Gregg's "CPU Utilization is Wrong" but this blog fails to discuss that blog's key point that CPU utilization is a measure of whether or not the CPU is busy, including whether the CPU is waiting [0]. That blog also explains that the IPC (instructions per cycle) metric actually measures useful work hidden within that busy state.

[0]: https://www.brendangregg.com/blog/2017-05-09/cpu-utilization...

1 comments

What's up with Brendans and CPU utilisation concerns, any Brendan to shine some light ?
I'd love to explain, but you'd need to change your name to Brendan first.