Brendan Gregg

DECEMBER 31, 2017

My last talk for 2017 was at AWS re:Invent, on "How Netflix Tunes EC2 Instances for Performance," an updated version of my [2014] talk. WARNING: These tunables were developed in late 2017, for Ubuntu Xenial instances on EC2.** Virtual Memory. Casey Rosenthal (traffic and chaos) Models of Availability. schedtool –B PID.

Tuning 53

Tuning AWS Best Practices Network 53

Brendan Gregg

SEPTEMBER 5, 2017

I've suggested adding a command to docker to make listing at least the top-level PIDs in containers easier. ## Virtual Machines The two main technologies on Linux are Xen and KVM (and there's Bhyve for BSD). What happens if processes really do try to populate all that virtual memory?

Virtualization 75

Virtualization AWS Engineering Hardware 75

Brendan Gregg

DECEMBER 30, 2017

My last talk for 2017 was at AWS re:Invent, on "How Netflix Tunes EC2 Instances for Performance," an updated version of my [2014] talk. WARNING: These tunables were developed in late 2017, for Ubuntu Xenial instances on EC2.** Virtual Memory. Casey Rosenthal (traffic and chaos) Models of Availability. schedtool –B PID.

Tuning 52

Tuning AWS Best Practices Network 52

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 110

Internet Internet AWS Performance 110

Brendan Gregg

SEPTEMBER 25, 2021

CLI tools The Cassandra systems were EC2 virtual machine (Xen) instances. Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. This was much worse many years ago on Xen virtual machine guests.

Speed 103

Speed Java AWS Virtualization 103

The Symphonia

DECEMBER 6, 2017

Correspondingly, 3GB functions should see a 2x CPU performance improvement over 1.5GB Lambdas, but this is through doubling the number of cores the function has access to, rather than double the virtualized time-slices. Traffic shaping / canary deployment was pre-announced at Serverless Conf NYC in October, and this is now available.

Serverless 40

Serverless Lambda AWS Traffic 40

Percona

SEPTEMBER 1, 2023

This blog was originally published in October 2017 and was updated in September 2023. Although we can tweak the number of tickets available in WiredTiger, there is a virtual limit – which means that changing the available tickets might generate processor overload instead of increasing performance.

Best Practices 98

Best Practices Traffic Database Servers 98