Brendan Gregg

SEPTEMBER 5, 2017

They use third-party software like Docker or Kubernetes to simplify their administration. There are workarounds: I can use the perf_events cgroup ID, provided the container software is configuring it (they do). There have been security vulnerabilities, just like there are with any software. People rarely create them manually.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Brendan Gregg

JULY 4, 2021

## References I've reproduced the talk references below, so you can click on links: - [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] Jul 2008 - [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] 2010 - [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency? Ford, et al., “TCP

Performance 52

Performance Latency Hardware Storage 52

Percona

SEPTEMBER 1, 2023

This blog was originally published in October 2017 and was updated in September 2023. Depending on the database size and on disk speed, a backup/restore process might take hours or even days! Depending on the database size and on disk speed, a backup/restore process might take hours or even days!

Best Practices 73

Best Practices Traffic Database Servers 73

Brendan Gregg

JULY 14, 2019

The book includes over 150 BPF observability tools that you can run to find performance wins and troubleshoot software, and also shows you how to write your own. I learned firsthand how to bring beginners from different backgrounds up to speed. Since BPF does so many things, it is becoming a technology name and no longer an acronym.

Systems 40

Systems Performance Education Technology 40

Smashing Magazine

JUNE 3, 2022

And today, we still have type in a digital context, but it travels through cables, wirelessly on smartphones, and in virtual reality glasses in 3D. Thus, one of the two typeface x-height’s will seem to be larger in size, although it may be the same point size in the software. Are Typefaces Tools, Software, Objects, Products Or What?

Performance 110

Performance Design Best Practices Testing 110

Brendan Gregg

AUGUST 8, 2017

Anyway, the following patch seems to make the load average much more consistent WRT the subjective speed of the system. I generated this using my offcputime tool from [bcc] (this tool needs eBPF features from Linux 4.8+), and my [flame graph] software: #./bcc/tools/offcputime.py awk '{ print $1, $2 / 1000 }' out.stacks |./FlameGraph/flamegraph.pl

Latency 111

Latency Metrics C++ Systems 111

SQL Server According to Bob

DECEMBER 31, 2018

Several years ago, I created a XEProfiler based loosely on the SSMS implementation, built as a 64-bit application to avoid the 32-bit memory limitations and using parallel activities to speed up the processing. virtual public void AbortAllWorkers() { if (null != Bob Dorr – Principal Software Engineer SQL Server.

Efficiency 40

Efficiency Code Servers Cache 40

All Things Distributed

OCTOBER 2, 2017

In support of Amazon Prime Day 2017, the biggest day in Amazon retail history, DynamoDB served over 12.9 VPC Endpoints give you the ability to control whether network traffic between your application and DynamoDB traverses the public Internet or stays within your virtual private cloud. million requests per second.

Internet 128

Internet Internet AWS Performance 128