Brendan Gregg

MAY 1, 2022

My dream is to turn computer performance analysis into a science, one where we can completely understand the performance of everything: of applications, libraries, kernels, hypervisors, firmware, and hardware. You never know a company (or person) until you see them on their worst day.

Wireless 52

Wireless Hardware Open Source Cloud 52

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. The video is on [youtube]: The slides are [here] or as a [PDF]: first prev next last / permalink/zoom I work on many areas of performance, but recently I've had a lot of demand to talk about BPF.

Performance 52

Performance Latency Hardware Storage 52

Brendan Gregg

FEBRUARY 28, 2023

link] 2021 - [Trader 21] Tiffany Trader, “Cerebras Second-Gen 7nm Wafer Scale Engine Doubles AI Performance Over First-Gen Chip ,” [link] Apr 2021 - [Ghigoff 21] Yoann Ghigoff, et al., "BMC:

Performance 110

Performance Latency Cache Virtualization 110

High Scalability

FEBRUARY 22, 2019

Ross Mcilroy : we now believe that speculative vulnerabilities on today's hardware defeat all language-enforced confidentiality with no known comprehensive software mitigations, as we have discovered that untrusted code can construct a universal read gadget to read all memory in the same address space through side-channels.

Internet 39

Internet Internet Scalability Lambda 39

Brendan Gregg

FEBRUARY 28, 2023

link] , 2021 [Trader 21] Tiffany Trader, “Cerebras Second-Gen 7nm Wafer Scale Engine Doubles AI Performance Over First-Gen Chip ,” [link] , Apr 2021 [Ghigoff 21] Yoann Ghigoff, et al.,

Performance 52

Performance Latency Cache Virtualization 52

The Netflix TechBlog

DECEMBER 23, 2020

Running many different workloads multi-tenant on a host necessitates the prevention lateral movement, a technique in which the attacker compromises a single piece of software running in a container on the system, and uses that to compromise other containers on the same system. To mitigate this, we run containers as unprivileged users?—?making

Media 286

Media Metrics Systems Processing 286

HammerDB

JUNE 27, 2022

HammerDB is a software application for database benchmarking. It enables the user to measure database performance and make comparative judgements about database hardware and software. Databases are highly sophisticated software, and to design and run a fair benchmark workload is a complex undertaking. The HammerDB name.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

The Morning Paper

DECEMBER 10, 2019

HotStorage 2019. Both abstractions must be implemented in a way that is efficient using existing hardware. The hardware perspective. At the hardware level we want to able to move data into, out of , and around memory, without consideration for persistence and reference lifetimes. Application requirements. Object spaces.

Hardware 52

Hardware Virtualization Operating System Programming 52

Tech News Gather

JULY 19, 2023

There’s no denying that the Web of Things community has gone crazy over matter since its release late in 2019. Otherwise, you may not be able to locate enough appropriate hardware and end up having to often switch between different programs. The global home automation market is projected to grow from $72.30 in forecast period.

Wireless 52

Wireless IoT Development Internet 52

Percona

JULY 7, 2023

Unfortunately, using certain open source database software as part of an HA architecture can present significant challenges. Despite all its upside, PostgreSQL software presents such challenges. PostgreSQL software supports synchronous streaming replication, asynchronous streaming replication, and logical replication.

Availability 81

Availability Open Source Architecture Database 81

Brendan Gregg

SEPTEMBER 25, 2021

As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Software-based clocksources could fix those issues and provide accurate monotonically-increasing time. In 2019 myself and others tested kvm-clock and found it was only about 20% slower than tsc.

Speed 126

Speed Java AWS Virtualization 126

Scalegrid

JUNE 11, 2019

Ready to transition from a commercial database to open source, and want to know which databases are most popular in 2019? 2019 Top Databases Used. So, which databases are most popular in 2019? just three months ago in our 2019 Database Trends – SQL vs. NoSQL, Top Databases, Single vs. Multiple Database Use report.

Open Source 55

Open Source Database Cloud Infrastructure 55

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

DECEMBER 18, 2018

Linux may need similar utilities to control various hardware cache installations. You should always validate the Fua capabilities with your device and hardware vendor. To accommodate a wide range of installations and hardware required four (4) options across SQL Server and the HE. Fua = Forced Unit Access. Device Flush.

Servers 90

Servers Media Cache Storage 90

HammerDB

OCTOBER 18, 2019

rc3-custom #1 SMP Mon Aug 12 14:07:33 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Welcome to Ubuntu 19.04 (GNU/Linux 5.3.0-rc3-custom hardware limits: 1000 MHz - 4.00 hardware limits: 1000 MHz - 4.00 current CPU frequency: Unable to call hardware current CPU frequency: 1.00 hardware limits: 1000 MHz - 4.00

Benchmarking 63

Benchmarking Performance Hardware C++ 63

The Morning Paper

SEPTEMBER 26, 2019

USENIX Security Symposium 2019. However, the widespread availability of powerful and low-cost software-defined radio platforms has altered the threat landscape. Wireless attacks on aircraft instrument landing systems Sathaye et al., It’s been a while since we last looked at security attacks against connected real-world entities (e.g.,

Wireless 91

Wireless Systems Airlines Hardware 91

Brendan Gregg

SEPTEMBER 25, 2021

As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Software-based clocksources could fix those issues and provide accurate monotonically-increasing time. In 2019 myself and others tested kvm-clock and found it was only about 20% slower than tsc.

Speed 52

Speed Java AWS Virtualization 52

O'Reilly

JULY 20, 2021

In 2019, YouTube had to settle with the FTC for a $170 million fine for selling ads targeting children. You will find that the paradigms you choose for other parties won’t align with the expectations for children, and modifying your software to accommodate children is difficult or impossible. About 40% of all households have a child.

Google 121

Google Games Technology Technology 121

Dynatrace

NOVEMBER 20, 2019

Having released this functionality in an Early Adopter Release with OneAgent version 1.173 and Dynatrace version 1.174 back in August 2019, we’re now happy to announce the General Availability of OneAgent full-stack monitoring for Linux on the IBM Z platform, sometimes informally referred to as Z/Linux.

Availability 31

Availability Hardware Java Tuning 31

O'Reilly

JULY 15, 2020

Success with microservices means owning the software lifecycle. Most (74%) respondents say their teams own the build-test-deploy-maintain phases of the software lifecycle. Software engineers comprise the survey audience’s single largest cluster, over one quarter (27%) of respondents (Figure 1). Success with containers.

Database 135

Database Architecture Education Systems 135

Dynatrace

AUGUST 8, 2019

The IBM Z platform is a range of mainframe hardware solutions that are quite frequently used in large computing shops. Typically, these shops run the z/OS operating system, but more recently, it’s not uncommon to see the Z hardware running special versions of Linux distributions. All Early Adopter Releases are fully supported.

Availability 25

Availability Hardware Java Tuning 25

Brendan Gregg

SEPTEMBER 25, 2021

As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Software-based clocksources could fix those issues and provide accurate monotonically-increasing time. In 2019 myself and others tested kvm-clock and found it was only about 20% slower than tsc.

Speed 40

Speed Java AWS Virtualization 40

HammerDB

OCTOBER 12, 2018

As is also the case this limitation is at the database level (especially the storage engine) rather than the hardware level. driver: intel_pstate CPUs which run at the same hardware frequency: 0 . CPUs which need to have their frequency coordinated by software: 0 . hardware limits: 1000 MHz - 3.80

Best Practices 40

Best Practices Scalability Performance C++ 40

The Morning Paper

JULY 4, 2019

degraded hardware, transient networking problem) or, more often, because of some change deployed by Netflix engineers that did not have the intended effect. Automating chaos experiments in production Basiri et al., Are you ready to take your system assurance programme to the next level?

Latency 77

Latency Engineering Metrics Traffic 77

KeyCDN

JULY 11, 2019

Well, according to HTTP Archive , as of June 1, 2019 the average desktop page is 1,896.8 This is crucial due to mobile devices requiring additional optimizations because they typically have less powerful hardware and a slower network connection when compared to desktop devices. KB and the average mobile page is 1,683.5

Speed 52

Speed Website Mobile Latency 52

Scalegrid

JULY 13, 2020

Recognized as the fastest growing database by popularity, PostgreSQL was named the DBMS of the year in both 2018 and 2017 by DB-Engines, and continues to grow in popularity in 2019. Software Update License & Support (annual). $0. In fact, PostgreSQL is so popular, 11.5% Oracle Enterprise Edition. Single Database Edition Costs. $0.

Open Source 244

Open Source Tuning C++ Database 244

Smashing Magazine

JANUARY 7, 2019

Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. Front-End Performance Checklist 2019 [PDF, Apple Pages, MS Word]. 2019-01-07T12:00:13+00:00. 2019-04-29T18:34:58+00:00. Vitaly Friedman. Web performance is a tricky beast, isn’t it? Image credit: Addy Osmani ) ( Large preview ).

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 6, 2020

On the other hand, we have hardware constraints on memory and CPU due to JavaScript parsing times (we’ll talk about them in detail later). Geekbench CPU performance benchmarks for the highest selling smartphones globally in 2019. On a middle-class mobile device, that accounts for 15–25 seconds for Time-To-Interactive.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 11, 2021

On the other hand, we have hardware constraints on memory and CPU due to JavaScript parsing and execution times (we’ll talk about them in detail later). Geekbench CPU performance benchmarks for the highest selling smartphones globally in 2019. Unfortunately, the data is only from 2019). Large preview ). Assets Optimizations.

Performance 145

Performance Cache Media Metrics 145