Memory Deep Dive Series

O sa postez azi o serie de articole scrise de Frank Denneman de la Vmware, ce mi se par foarte utile atunci cand vrei sa faci un refresh sau update la cunostinte si care sunt foarte utile in scenarii de performance optimization sau troubleshooting:

http://frankdenneman.nl/2015/02/18/memory-configuration-scalability-blog-series/

Part 1: Memory Deep Dive Intro
Part 2: Memory subsystem Organisation
Part 3: Memory Subsystem Bandwidth
Part 4: Optimizing for Performance
Part 5: DDR4 Memory
Part 6: NUMA Architecture and Data Locality
Part 7: Memory Deep Dive Summary

Si tot cam pe acelasi subiect:

Introduction 2016 NUMA Deep Dive Series:

Part 1: From UMA to NUMA
Part 1 covers the history of multi-processor system design and clarifies why modern NUMA systems cannot behave as UMA systems anymore.

Part 2: System Architecture
The system architecture part covers the Intel Xeon microarchitecture and zooms in on the Uncore. Primarily focusing on Uncore frequency management and QPI design decisions.

Part 3: Cache Coherency
The unsung hero of today’s NUMA architecture. Part 3 zooms in to cache coherency protocols and the importance of selection the proper snoop mode.

Part 4: Local Memory Optimization
Memory density impacts the overall performance of the NUMA system, part 4 dives into the intricacy of channel balance and DIMM per Channel configuration.

Part 5: ESXi VMkernel NUMA Constructs
The VMkernel has to distribute the virtual machines to provide the best performance. This part explores the NUMA constructs that are subject to initial placement and load-balancing operations.

Part 6: NUMA Initial Placement and Load Balancing Operations
The VMkernel has to distribute the virtual machines to provide the best performance. This part explores the NUMA initial placement and load-balancing operations.

Part 7: From NUMA to UMA
The world of IT moves in loops of iteration, the last 15 years we moved from UMA to NUMA systems, which today’s focus on latency and the looming licensing pressure, some forward-thinking architects are looking into creating high performing UMA systems.