Brendan Gregg

MARCH 16, 2024

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. And for leaf routines (which never establish a frame), this is a non-issue.

Java 145

Java Cache Google Hardware 145

Alex Russell

APRIL 29, 2021

As an engineer on a browser team, I'm privy to the blow-by-blow of various performance projects, benchmark fire drills, and the ways performance marketing (deeply) impacts engineering priorities. With each team, benchmarks lost are understood as bugs. Delayed three years ( Chrome 40, November 2014 vs. Safari 11.1,

Media 145

Media Games Education Engineering 145

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Using a global ASP as a benchmark can further mislead thanks to the distorting effect of ultra-high-end prices rising while shipment volumes stagnate. The Moto G4 , for example.

Performance 124

Performance Network Cache Metrics 124

SQL Performance

APRIL 8, 2019

The L3 cache size is 64MB. I wrote about using CPU-Z to benchmark the Intel Xeon E5-2673 v3 processor in an Azure VM in this article. The older Intel Xeon E5-26xx v3 (Haswell) series which was introduced in Q3 of 2014, had a maximum memory bandwidth of 2133MHz. Figure 1: CPU-Z Benchmark Results for LS16v2.

Azure 42

Azure Virtualization Storage Benchmarking 42

SQL Performance

JULY 16, 2019

This situation was so bad that Microsoft offered a 25% discount on the cost of SQL Server processor core licenses for SQL Server 2012 and SQL Server 2014, if you ran on qualifying AMD Opteron processors with six or more cores. They will also have up to 256MB of L3 cache per processor.

Servers 46

Servers Hardware Architecture Retail 46