Brendan Gregg

MARCH 16, 2024

2015-2020: Overhead As part of production rollout I did many performance overhead tests, which I've described publicly before: The overhead of adding frame pointers to everything (libc and Java) was usually less than 1%, with one exception of 10%. The overhead to walk DWARF is also too high, as it was designed for non-realtime use.

Java 145

Java Cache Google Hardware 145

The Netflix TechBlog

DECEMBER 23, 2020

Unfortunately, these default namespace boundaries are not sufficient to prevent container escape, as seen in CVEs like CVE-2015–2925. Most of these encoding tools are designed to interact with the POSIX filesystem API. Use Case: FUSE Netflix internally uses a purpose built FUSE filesystem called MezzFS.

Media 286

Media Metrics Systems Processing 286

SQL Server According to Bob

JUNE 3, 2016

My development collogues and I are starting a regular blog series, outlining the vast range of scalability improvements, allowing SQL Server 2016 to run across a wide array of hardware configurations, faster and better than previous releases of SQL Server. Where SOS_RWLock is used, no matter the SKU, the new design applies.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

Alex Russell

MARCH 6, 2021

Devices and networks have evolved too: Alex Russell @slightlylate An update on mobile CPUs and the Performance Inequality Gap: Mid-tier Android devices (~$300) now get the single-core performance of a 2014 iPhone and the multi-core perf of a 2015 iPhone. Hardware Past As Performance Prologue. Mind The Gap.

Performance 124

Performance Network Cache Metrics 124

Randon ASCII

AUGUST 16, 2018

Aside: I just want to say thank you to 2015 me for asking Microsoft to improve their thread naming mechanisms, and thank you to Microsoft for doing everything I suggested – thread names in WPA are great ! The problem suddenly became clearer. The lock had been reacquired by the process that had just released it. Starvation. Source code.

Programming 75

Programming Virtualization Code Processing 75

Alex Russell

JANUARY 30, 2024

JavaScript-Heavy # Since at least 2015, building JavaScript-first websites has been a predictably terrible idea, yet most of the sites I trace on a daily basis remain mired in script. [1] Engineering is the discipline of designing solutions under specific constraints.

Performance 90

Performance Network Mobile Speed 90

Smashing Magazine

JANUARY 6, 2020

Performance isn’t just a technical concern: it affects everything from accessibility to usability to search engine optimization, and when baking it into the workflow, design decisions have to be informed by their performance implications. Map design decisions against performance budget and the priorities defined early on.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

Performance isn’t just a technical concern: it matters, and when baking it into the workflow, design decisions have to be informed by their performance implications. Without a strong alignment between dev/design and business/marketing teams, performance isn’t going to sustain long-term. Setting Realistic Goals.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 11, 2021

Performance isn’t just a technical concern: it affects everything from accessibility to usability to search engine optimization, and when baking it into the workflow, design decisions have to be informed by their performance implications. It’s designed to capture delays that result from the main thread being busy, especially during page load.

Performance 145

Performance Cache Media Metrics 145