Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). I also shared setting the clocksource in my talks and in my 2015 [Linux tunables] post. This was much worse many years ago on Xen virtual machine guests.

Speed 126

Speed Java AWS Virtualization 126

Brendan Gregg

MARCH 16, 2024

2015-2020: Overhead As part of production rollout I did many performance overhead tests, which I've described publicly before: The overhead of adding frame pointers to everything (libc and Java) was usually less than 1%, with one exception of 10%. I should do a blog post just on SFrames. Just to name a couple of languages.

Java 145

Java Cache Google Hardware 145

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Note that Ubuntu also has a frame to show entry into vDSO (virtual dynamic shared object). I also shared setting the clocksource in my talks and in my 2015 [Linux tunables] post. This was much worse many years ago on Xen virtual machine guests.

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

JANUARY 11, 2021

So, if your year-over-year web performance metrics stay stable, that's usually a warning sign as you're actually regressing as the environment keeps improving ( details in a blog post by Gilles Dubuc ). compared to early 2015. Geekbench CPU performance benchmarks for the highest selling smartphones globally in 2019.

Performance 145

Performance Cache Media Metrics 145