Brendan Gregg

MARCH 16, 2024

I ended up developing a fix for the JVM c2 compiler which Oracle reworked and added as the -XX:+PreserveFramePointer option in JDK8u60 (see my Java in Flames post for details [ PDF ]). and we may have been flying close to the edge of hardware cache warmth, where adding a bit more instructions caused a big drop.

Java 145

Java Cache Google Hardware 145

Alex Podelko

SEPTEMBER 8, 2020

It was called Jellly at the time (mid 2015) but it was an early build of what OctoPerf would become. The tool looked young but promising, and I was looking for a change and a challenge, which is why I joined them along with Quentin to develop the business plan/strategy. How would compare the existing open source tools?

Open Source 223

Open Source Performance Testing Testing Performance 223

Alex Russell

FEBRUARY 21, 2023

If you're a web developer not living under a rock, you undoubtedly got word of last week's big Safari 16.4 By mandating proof of developer enthusiasm for features, extensive test suites, and accurate specifications, the catch-up process has been put on rails for Apple. What choice do developers have, but to sit and stew?

Energy 79

Energy Games Engineering Design 79

Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 111

Virtualization AWS Hardware Storage 111

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. These vulnerabilities arise due to the complexity of interactions between namespaces, a large number of historical decisions during kernel development, and leaky abstractions like the proc filesystem in Linux.

Media 286

Media Metrics Systems Processing 286

All Things Distributed

APRIL 4, 2017

In 2014 and 2015 respectively, AWS opened offices in Stockholm and Espoo, Finland. After finding it cost prohibitive to use colocation centers in local markets where their users are based, iZettle decided to give up hardware. In making the switch to AWS, WOW air has saved between $30,000 and $45,000 on hardware, and software licensing.

AWS 117

AWS Airlines Latency Games 117

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 40

Virtualization AWS Hardware Storage 40

Randon ASCII

FEBRUARY 25, 2018

In this particular investigation, which spanned twenty months, we suspected hardware failure, compiler bugs, linker bugs, and other possibilities. Jumping too quickly to blaming hardware or build tools is a classic mistake, but in this case the mistake was that we weren’t thinking big enough. And it didn’t crash.

Programming 79

Programming Hardware Cache Code 79

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. Try SQL Server 2016 Today. – [link].

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. The Moto G7 very much looks the part.

Performance 124

Performance Network Cache Metrics 124

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] It's clear that developers are out of touch with market ground-truth , but it's not obvious why. This was not a fast box.

Performance 90

Performance Network Mobile Speed 90

Smashing Magazine

JANUARY 6, 2020

In many organizations, front-end developers know exactly what common underlying problems are and what loading patterns should be used to fix them. So every time a conversation about further development happens, performance is a part of that conversation as well. Establish a performance culture. thanks, Guy Podjarny! Large preview ).

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

In many organizations, front-end developers know exactly what common underlying problems are and what loading patterns should be used to fix them. The former is particularly useful during development as it will help you identify, isolate and fix performance issues while working on the product. Establish a performance culture.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 11, 2021

In many organizations, front-end developers know exactly what common underlying problems are and what strategies should be used to fix them. So every time a conversation about further development happens, performance is a part of that conversation as well. Establish a performance culture. Large preview ). Large preview ).

Performance 145

Performance Cache Media Metrics 145