The Netflix TechBlog

APRIL 17, 2019

Netflix headquarters circa 2014. 264/AVC, currently, the most ubiquitous video compression standard supported by modern devices, often in hardware. The standard specification describes in minute detail how a video bitstream should be processed in order to produce displayable video frames. The success was repeated by H.264/AVC,

Open Source 166

Open Source Scalability Speed Efficiency 166

The Morning Paper

OCTOBER 1, 2020

That app is subject to “voluminous (public) user feedback”, and in the 2014 floating-point based calculator, bug reports relating to inaccurate results, unnecessary zeroes, and the like. For calculators, spreadsheets, and many other applications we don’t need the raw performance of hardware floating point operations.

Java 143

Java Hardware Open Source Testing 143

SQL Performance

JULY 16, 2019

A close monitoring of the hardware enthusiast community, including many of the most respected hardware analysts and reviewers paints an even more dire picture about Intel in the server processor space. This made it easier for database professionals to make the case for a hardware upgrade, and made the typical upgrade more worthwhile.

Servers 46

Servers Hardware Architecture Retail 46

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.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

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

Brendan Gregg

FEBRUARY 28, 2023

Make sure your system can handle next-generation DRAM,” [link] , Nov 2011 [Hruska 12] Joel Hruska, “The future of CPU scaling: Exploring options on the cutting edge,” [link] , Feb 2012 [Gregg 13] Brendan Gregg, “Blazing Performance with Flame Graphs,” [link] , 2013 [Shimpi 13] Anand Lal Shimpi, “Seagate to Ship 5TB HDD in 2014 using Shingled Magnetic (..)

Performance 52

Performance Latency Cache Virtualization 52

Smashing Magazine

OCTOBER 27, 2021

Nowadays, hardware and software are designed to conduct eye-tracking studies for marketing , UX , psychological and medical research , gaming , and several other use cases. However, the price of eye-tracking used to be much higher than heatmaps, as measuring users’ gaze required special hardware to be used in-lab. Online Shopping.

Mobile 113

Mobile Website Hardware Social Media 113

SQL Performance

JUNE 21, 2019

Prior to SQL Server 2012, the maximum server memory value only applied to the bufferpool, so customers needed to limit the amount of memory the bufferpool could use to save memory for the operating system and other processes. For SQL Server 2008R – 2014, you could lower this threshold using trace flag 2371. UpdateStatistics.

Servers 49

Servers Azure Hardware Database 49

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. Advances in browser content processing. Hardware Past As Performance Prologue.

Performance 124

Performance Network Cache Metrics 124

Alex Russell

APRIL 29, 2021

Delayed three years ( Chrome 40, November 2014 vs. Safari 11.1, A subset ( element.animate() ) has enabled developers to more easily create high-performance visual effects with lower risk of visual stuttering in Chrome and Firefox since 2014. Helps media apps on the web save battery when doing video processing. Service Workers.

Media 145

Media Games Education Engineering 145

Nick Desaulniers

OCTOBER 24, 2018

Before booting a compiled Linux kernel image on actual hardware, it can save us time and potential headache to do a quick boot in a virtual machine like QEMU. 1.144949 ] Hardware name: QEMU Standard PC ( i440FX + PIIX, 1996 ) , BIOS 1.10.2-1ubuntu1 Typically, when we modify a program, we’d like to run it to verify our changes.

C++ 56

C++ Hardware Virtualization Systems 56

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. What about short-lived processes, like a service restarting in a loop? How long does it take to read the time?

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. What about short-lived processes, like a service restarting in a loop? How long does it take to read the time?

Speed 52

Speed Java AWS Virtualization 52

SQL Performance

MARCH 17, 2020

Back in 2014, I wrote an article called Performance Tuning the Whole Query Plan. The Sort only has 19 rows to process, so it consumes only 1ms or so. The parallel column store aggregate push down result of 57 million rows processed in 7ms (using 40ms of CPU) is remarkable, especially considering the hardware.

Servers 86

Servers Tuning Database Efficiency 86

Brendan Gregg

SEPTEMBER 5, 2017

There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). On Linux, containers are a combination of namespaces (restricting what a process sees) and cgroups (similar to Solaris resource controls). amazon").

Virtualization 76

Virtualization AWS Engineering Hardware 76

Smashing Magazine

FEBRUARY 5, 2019

Although modern iOS hardware is powerful enough to handle many intensive and complex tasks, the device could still feel unresponsive if you are not careful about how your app performs. If you scroll a table view quickly, a lot of small chunks of memory will be allocated on the fly, and this process will make the UI janky!

Performance 77

Performance Energy Operating System Code 77

Brendan Gregg

AUGUST 8, 2017

This measures demand, which can be greater than what the system is currently processing. 42/3411 43603. . ## History The original load averages show only CPU demand: the number of processes running plus those waiting to run. The load average is an average of the number of runnable processes over a given time period.

Latency 111

Latency Metrics C++ Systems 111

SQL Performance

MARCH 8, 2021

SQL Server 2014 SP2 and later produce runtime (“actual”) execution plans that can include elapsed time and CPU usage for each execution plan operator (see KB3170113 and this blog post by Pedro Lopes). This operator consumes no CPU time, and only processes 524 rows. The clock keeps running at the same rate even during sleep.

Servers 95

Servers Tuning Architecture Processing 95