What about non-reclaimable performance losses?

Posted Mar 19, 2025 17:34 UTC (Wed) by Cyberax (✭ supporter ✭, #52523)
In reply to: What about non-reclaimable performance losses? by fraetor
Parent article: Better CPU vulnerability mitigation configuration

Speculative execution provides something like 5-10x speed up for single-threading. It's utterly indispensable.

What about non-reclaimable performance losses?

Posted Mar 19, 2025 17:45 UTC (Wed) by fraetor (subscriber, #161147) [Link] (2 responses)

My knowledge about CPU performance is about 20 years out of date, so mostly revolves around optimising cache use. Do you know of any good resources for understanding modern CPU features?

What about non-reclaimable performance losses?

Posted Mar 19, 2025 18:00 UTC (Wed) by Cyberax (✭ supporter ✭, #52523) [Link] (1 responses)

This book is pretty great: https://products.easyperf.net/perf-book-2 (it's free, but you can pay for it)

Performance analysis book

Posted Mar 21, 2025 12:45 UTC (Fri) by amw (subscriber, #29081) [Link]

That looks like an excellent book recommendation, thank you!

The amazon link on that page didn't work for me though. Here's one that does: https://a.co/d/3r94Xq4