Dynatrace

MAY 5, 2021

Establishing clear, consistent, and effective quality gates that are automatically validated at each phase of the delivery pipeline is essential for improving software quality and speeding up delivery. Automating quality gates creates reliable checks and balances and speeds up the process by avoiding manual intervention.

Benchmarking 188

Benchmarking Latency Speed Software 188

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. This was a weird problem to think about: Time itself had now become a resource and target of performance analysis. I'm including this step as a reminder for anyone following this kind of analysis.

Speed 40

Speed Java AWS Virtualization 40

Dynatrace

SEPTEMBER 23, 2020

Storage mount points in a system might be larger or smaller, local or remote, with high or low latency, and various speeds. For example: All subfolders of the /opt directory are mounted as local, low latency, high-throughput drives, with relatively low storage capacity. Stay tuned for upcoming news about these changes.

Storage 150

Storage Latency Operating System Network 150

Dynatrace

DECEMBER 2, 2021

You can set SLOs based on individual indicators, such as batch throughput, request latency, and failures-per-second. Gathering and analyzing metrics over time will help you determine the overall effectiveness of your SLOs so you can tune them as your processes mature and improve. SLO best practices. Automate SLO evaluation.

Metrics 196

Metrics Best Practices DevOps Infrastructure 196

The Morning Paper

MAY 21, 2019

This boils down to a single digit µs latency toleration in the tail for far memory, and in addition to security and privacy concerns, rules out remote memory solutions. Thus we’re fundamentally trading (de)-compression latency at access time for the ability to pack more data in memory. ML-based auto-tuning. Evaluation.

Software 78

Software Software Google Hardware 78

All Things Distributed

APRIL 9, 2015

At Amazon we have hundreds of teams using machine learning and by making use of the Machine Learning Service we can significantly speed up the time they use to bring their technologies into production. Synchronous events operate with low latency so you can deliver dynamic, interactive experiences to your users.

Lambda 122

Lambda Cloud IoT AWS 122

KeyCDN

AUGUST 15, 2019

Before you begin tuning your website or application, you must first figure out which metrics matter most to your users and establish some achievable benchmarks. When the word “performance” is heard, most people immediately think of speed. What is Performance Testing? Peak response time: The longest response time.

Testing Tools 55

Testing Tools Best Practices Performance Testing Testing 55

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. Both Xen and KVM have had many performance and security improvements, and workloads can now be tuned to run at almost bare metal speeds (say, a 3% loss or less).

Virtualization 76

Virtualization AWS Engineering Hardware 76