CPU Flame Graphs
Recent posts: 29 Oct 2024 » AI Flame Graphs 22 Jul 2024 » No More Blue Fridays 24 Mar 2024 » Linux Crisis Tools 17 Mar 2024 » The Return of the Frame Pointers 10 Mar 2024 » eBPF Documentary 28 Apr 2023 » eBPF Observability Tools Are Not Security Tools 01 Mar 2023 » USENIX SREcon APAC 2022: Computing Performance: What's on the Horizon 17 Feb 2023 » USENIX SREcon APAC 2023: CFP 02 May 2022 » Brendan
What is @Contended and False Sharing ?
Java 8 introduces a new annotation called @Contended, this is to reduce false sharing. This article covers @Contended and explains why False Sharing is a silent performance killer. Cache Line Overview CPU's don't read memory in single bytes, rather they read 'chunks of memory' usually in blocks of 64 bytes, these chunks are referred to as cache lines. If you had two threads ( let's call them Threa
Revised Ivy Bridge launch schedule confirmed
Ivy Bridge launch was delayed twice. First time it slipped from the first to the second quarter 2012, and then it was delayed by another two weeks. Current launch date for desktop Ivy Bridge CPUs is set on April 29, which was confirmed by two different sources, Sweclockers and Donanimhaber. That still left us in the dark in regards to mobile processors, due to rumors that their launch was pushed b
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