Brendan Gregg

JULY 4, 2021

youtube]: [link] [PDF]: /Slides/LISA2021_ComputingPerformance.pdf [Systems Performance 2nd Edition]: /systems-performance-2nd-edition-book.html [BPF Internals]: /blog/2021-06-15/bpf-internals.html [slideshare]: [link] [write about]: /blog/2021-07-03/how-to-add-bpf-observability.html Ford, et al., “TCP

Performance 140

Performance Latency Hardware Storage 140

Brendan Gregg

JULY 4, 2021

youtube]: [link] [PDF]: /Slides/LISA2021_ComputingPerformance.pdf [Systems Performance 2nd Edition]: /systems-performance-2nd-edition-book.html [BPF Internals]: /blog/2021-06-15/bpf-internals.html [xlideshare]: [link] [write about]: /blog/2021-07-03/how-to-add-bpf-observability.html [here]: /Slides/LISA2021_ComputingPerformance

Performance 52

Performance Latency Hardware Storage 52

High Scalability

DECEMBER 7, 2018

It's HighScalability time: This is your 1500ms latency in real life situations - pic.twitter.com/guot8khIPX. heipei : It's Friday, I've been in a jumpsuit doing manual labor all day (crazy, I know) and weighing my options between passing out on the couch over some Youtube videos, reading the Friday @highscal blog post or writing code.

Internet 163

Internet Internet Scalability Blockchain 163

The Netflix TechBlog

OCTOBER 19, 2020

In our previous blog post we introduced Edgar, our troubleshooting tool for streaming sessions. If we had an ID for each streaming session then distributed tracing could easily reconstruct session failure by providing service topology, retry and error tags, and latency measurements for all service calls.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

The Symphonia

MAY 22, 2018

Gojko Adzic has done some great speaking and writing on his experience here, and I included the link to his talk from late 2017. I also rewrote the section on Startup Latency since Cold Starts are one of the big “FUD” areas of Serverless. and products like AWS Fargate have made this distinction murkier still.

Serverless 40

Serverless Architecture Lambda Azure 40

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. The change was obvious in the production graphs, showing a drop in write latencies: Once tested more broadly, it showed the write latencies dropped by 43%, delivering slightly better performance than on CentOS.

Speed 126

Speed Java AWS Virtualization 126

Brendan Gregg

SEPTEMBER 5, 2017

Here's some output from my zfsdist tool, in bcc/BPF, which measures ZFS latency as a histogram on Linux: # zfsdist. Tracing ZFS operation latency. Search for recent blog posts on Linux containers, and try them out, and you'll piece together their capabilities and workings bit by bit. Hit Ctrl-C to end. ^C

Virtualization 76

Virtualization AWS Engineering Hardware 76