Brendan Gregg

JULY 4, 2021

This was a chance to talk about other things I've been working on, such as the present and future of hardware performance. BBR: Congestion-Based Congestion Control,” [link] 2016 - [Gregg 16] Brendan Gregg, “Unikernel Profiling: Flame Graphs from dom0,” [link] Jan 2016 - [Gregg 16b] Brendan Gregg, “Linux 4.X Ford, et al., “TCP

Performance 52

Performance Latency Hardware Storage 52

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 Performance

JUNE 21, 2019

While hardware such as intelligent SANs, Solid State Disk, and other advancements have helped speed things up, wasted space in index can translate to wasted space in the buffer pool as well as wasting more I/O. SQL Server Database Maintenance plans prior to SQL Server 2016 only allowed to rebuild or reorganize all indexes.

Servers 49

Servers Azure Hardware Database 49

Brendan Gregg

SEPTEMBER 5, 2017

LTS (April 2016). I wrote about it in a previous post, [DTrace for Linux 2016]. I wrote a page on it: [perf]. - **eBPF**: tracing features completed in 2016, this provides efficient programmatic tracing to existing kernel frameworks. The hardest part on Linux is now done: kernel support. It's the official profiler.

Virtualization 75

Virtualization AWS Engineering Hardware 75

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.

Programming 79

Programming Hardware Cache Code 79

Brendan Gregg

FEBRUARY 28, 2023

References I've reproduced the references from my SREcon22 keynote below, so you can click on links: [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] , Jul 2008 [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] , 2010 [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency?

Performance 52

Performance Latency Cache Virtualization 52

SQL Server According to Bob

JULY 13, 2016

desktop machine (I won’t tell you the hardware details. Today we are introducing the new Basic Installer experience for SQL Server 2016 Express , SQL Server 2016 Developer , and SQL Server 2016 Evaluation Editions. Don’t worry about taking screenshots or speed reading. Go install it”. on my Windows NT 3.1

Servers 40

Servers Media Engineering Virtualization 40

Alex Russell

OCTOBER 22, 2017

JavaScript is the single most expensive part of any page in ways that are a function of both network capacity and device speed. Thankfully, this is somewhat easier than network speeds: more than half of American mobile users are on Android devices. The true median device from 2016 sold at about ~$200 unlocked.

Performance 74

Performance Network Benchmarking Mobile 74

Rigor

MARCH 20, 2018

I wrote a blog in 2016 that discussed the need for businesses to flip the traditional monitoring investment pyramid on its head. Instead of focusing on hardware and infrastructure first, technical teams should first ensure that they first have visibility on the thing that drives the business: their customer experience.

Monitoring 40

Monitoring Retail Ecommerce Infrastructure 40

John McCalpin

NOVEMBER 5, 2016

In the latest (October 2016) revision of Intel’s Instruction Extensions Programming Reference , Intel has disclosed a fairly dramatic departure from these “traditional” approaches. The core does not have enough load bandwidth to perform all of these extra load operations at full speed.

Cache 40

Cache C++ Latency Hardware 40

Dynatrace

OCTOBER 28, 2021

Chaos engineering matured at organizations such as Netflix, and gave rise to technologies such as Gremlin (2016) , becoming more targeted and knowledge-based. Speeds incident response. By learning what failure scenarios are possible, these teams can speed troubleshooting, repairs, and incident response.

Engineering 264

Engineering Entertainment Cloud Infrastructure 264

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 110

Virtualization AWS Hardware Storage 110

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.

Mobile 128

Mobile Website Hardware Social Media 128

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