Brendan Gregg

SEPTEMBER 25, 2021

There's no Java stack—there should be a tower of green Java methods—instead there's only a single green frame or two. This is how Java flame graphs looked at the time. Later that year I prototyped the c2 frame pointer fix that became -XX:+PreserveFramePointer, which fixes Java stacks in these profiles.

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

DECEMBER 21, 2019

For my AWS re:Invent talk on BPF Performance Analysis at Netflix, I began with a demo of "BPF superpowers" (aka eBPF). In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. strength: -46 strength: -46 strength: -45 strength: -45 [.]

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

For my AWS re:Invent talk on BPF Performance Analysis at Netflix, I began with a demo of "BPF superpowers" (aka eBPF). In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. usr/bin/python # # iwlstrength.py

C++ 52

C++ Education Java 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 The developers can also rework the code with the memory constraint in mind to improve performance (e.g., 1072-aws (xxx) 12/19/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 12.25 Hit Ctrl-C to end. ^C

Cache 40

Cache C++ AWS Systems 40

O'Reilly

FEBRUARY 18, 2020

Growth is still strong for such a large topic, but usage slowed in 2018 (+13%) and cooled significantly in 2019, growing by just 7%. But sustained interest in cloud migrations—usage was up almost 10% in 2019, on top of 30% in 2018—gets at another important emerging trend. Still cloud-y, but with a possibility of migration.

Software Architecture 134

Software Architecture DevOps Data Engineering Architecture 134

The Netflix TechBlog

DECEMBER 11, 2020

We had our first Studio applications consuming the federated graph, without any performance degradation, by the end of the 2019. This gives us access to Netflix’s Java ecosystem, while also giving us the robust language features such as coroutines for efficient parallel fetches, and an expressive type system with null safety.

Architecture 249

Architecture Best Practices Engineering Open Source 249

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 prevents code reuse across databases. The same code is used for MySQL and PostgreSQL and can be used for other similar databases as well. The destination may be a datastore or an external API. Online event processing.

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. Preventing code reuse across databases. The same code is used for MySQL and PostgreSQL and can be used for other similar databases as well. The destination may be a datastore or an external API. Beresford, and Boerge Svingen.

Database 212

Database Traffic Transportation Open Source 212