Brendan Gregg

APRIL 14, 2022

eBPF tools (2014-2019). On the Netflix Java/Linux/EC2 stack there were no working mixed-mode flame graphs, no production safe dynamic tracer, and no PMCs: All tools I used extensively for advanced performance analysis. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture. flame graphs (2014).

Java 145

Java Cloud Cache AWS 145

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 Reads usually have apps waiting on them; writes may not (write-back caching). Counting cache functions. Hit Ctrl-C to end. ^C

Cache 105

Cache C++ AWS Latency 105

Brendan Gregg

APRIL 14, 2022

offer letter logo (2014) flame graphs (2014) eBPF tools (2014-2019) PMC analysis (2017) my pandemic-abandoned desk (2020); office wall I joined Netflix in 2014, a company at the forefront of cloud computing with an attractive work culture. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture.

Java 52

Java Cache Cloud AWS 52

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 Reads usually have apps waiting on them; writes may not (write-back caching). This is "cache busting." Hit Ctrl-C to end. ^C

Cache 40

Cache C++ AWS Systems 40

The Netflix TechBlog

DECEMBER 17, 2019

There are services at Netflix that use RDBMS kind of databases such as MySQL or PostgreSQL via AWS RDS. This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. The destination may be a datastore or an external API.

Database 197

Database Traffic Transportation Open Source 197

The Netflix TechBlog

DECEMBER 17, 2019

There are services at Netflix that use RDBMS kind of databases such as MySQL or PostgreSQL via AWS RDS. This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. The destination may be a datastore or an external API.

Database 212

Database Traffic Transportation Open Source 212