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. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c. But I'm not completely sure.

Speed 126

Speed Java AWS Virtualization 126

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Also, how to test the hardware of the mobile phone itself, is it supporting all the software as it should? Let us have a look at the most popular types of mobile testing for applications and hardware.

Mobile 82

Mobile Testing Hardware C++ 82

Brendan Gregg

AUGUST 18, 2019

Originally posted at https:/opensource.com/article/19/8/introduction-bpftrace. bpftrace is a new open source tracer for Linux for analyzing production performance problems and troubleshooting software. software Kernel software-based events. hardware Hardware counter-based instrumentation.

Latency 68

Latency C++ Cache Programming 68

Nick Desaulniers

APRIL 6, 2020

halt (); Some sort of very early exception handler; better to sit busy in an infinite loop than run off and destroy hardware or corrupt data, I suppose. Jann Horn gets back to me first: Can you use QEMU to look at the hardware frame (which contains values pushed by the hardware in response to the page fault) in early_idt_handler_common?

C++ 67

C++ Hardware Code Virtualization 67

Smashing Magazine

JUNE 18, 2020

Flutter isn’t that, though: it runs natively on each platform, and it means each app runs just like it would run if it were written in Java/Kotlin or Objective-C/Swift on Android and iOS, pretty much. In this article, we’re going to see some of those differences and how to overcome them. In React Native.

Storage 93

Storage Mobile Website Java 93

HammerDB

JANUARY 5, 2019

For example the following chart (with the actual data removed for the reasons described further in this post) shows the HammerDB TPC-C workload run against the same database on different processing architectures (grouped by colour) and speed with the most recent at the top.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

All Things Distributed

MARCH 13, 2017

This article titled " Wie Unternehmen digitale Talente anziehen " appeared in German last week in the "Tipps für Arbeitgeber" section of Wirtschaftwoche. Previously, the top priorities for IT departments were equipping data centers with hardware, purchasing software, and further developing proprietary software.

Social Media 84

Social Media Retail Automotive Innovation 84

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. As (C) looked like a kernel rebuild, I started with (D) and (E). I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c But I'm not completely sure.

Speed 52

Speed Java AWS Virtualization 52

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. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c But I'm not completely sure.

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

AUGUST 8, 2017

TABLE OF EXP(-T/C) FOR T = 5 SEC. EXPFF: EXP 0.920043902 ;C = 1 MIN EXP 0.983471344 ;C = 5 MIN EXP 0.994459811 ;C = 15 MIN. There are countless articles on load averages, many of which point out the Linux nr_uninterruptible gotcha. The so-called "one minute average" only reaches about 0.62 by the one minute mark.

Latency 111

Latency Metrics C++ Systems 111

Testsigma

JUNE 19, 2020

As Agile methodology was introduced, the need for fast and continuous delivery of software applications increased. Later in this article, we will discuss Testsigma which is transforming the complete testing industry. Selenium is an open-source and free software 2. Introduction. Selenium supports parallel test cases execution 6.

Testing Tools 60

Testing Tools Testing Open Source Java 60

Brendan Gregg

SEPTEMBER 5, 2017

I wrote an ftrace toolkit, [perf-tools], and the article [Ftrace: the hidden light switch]. - **perf**: since 2009, this started as a PMC profiler but can do tracing now as well, usually in a dump-and-post-process style. Hit Ctrl-C to end. ^C They use third-party software like Docker or Kubernetes to simplify their administration.

Virtualization 76

Virtualization AWS Engineering Hardware 76

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). From Addy’s article “ Loading Web Pages Fast On A $20 Feature Phone ”. To achieve the goals stated in the first paragraph, we have to consider the critical file size budget for JavaScript.

Performance 145

Performance Cache Network Metrics 145

Smashing Magazine

JANUARY 7, 2019

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). awesome-webpack is a curated list of useful Webpack resources, libraries and tools, including articles, videos, courses, books and examples for Angular, React and framework-agnostic projects.

Performance 103

Performance Cache Metrics Network 103

Smashing Magazine

JANUARY 11, 2021

It’s worth noting that you will end up with better Core Web Vitals scores by following a general advice in this article.). 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). Largest Contentful Paint ( LCP ) < 2.5 considerations.

Performance 145

Performance Cache Media Metrics 145

SQL Server According to Bob

DECEMBER 18, 2018

Durability is a cornerstone of any database system and starting with SQL Server 2017 on Linux Cumulative Update 6 (CU6), SQL Server on Linux enables “Forced Flush” behavior as described in this article , improving durability on non-Fua optimized systems. “Be Linux may need similar utilities to control various hardware cache installations.

Servers 90

Servers Media Cache Storage 90

SQL Server According to Bob

JANUARY 11, 2020

ReadFile WriteFile ReadFileScatter WriteFileGather GetOverlappedResult ​​ For extended details on the 823 error, see ​​ Error message 823 may indicate hardware problems or system problems ​​ ( [link] i crosoft.com/default.aspx?scid=kb scid=kb ; en-us;828339 ) on the Microsoft Web site.

Servers 40

Servers Cache Database Media 40

Smashing Magazine

AUGUST 22, 2021

HTTP/3 performance features ( current article ). This has led to many articles claiming that QUIC also doesn’t use congestion control, that QUIC can instead start sending data at a much higher rate over UDP (relying on the removal of HOL blocking to deal with packet loss), that this is why QUIC is much faster than TCP.

Performance 105

Performance Network Latency Servers 105

High Scalability

NOVEMBER 25, 2019

In this article, I will share the current architecture and some of the lessons we learned scaling it along with some of the things we are looking to improve upon in the near future. Java/Python mostly and some small services in Go/C. How are software and hardware upgrades rolled out? Egnyte Connect Platform. Google cloud.

Architecture 52

Architecture Cache Azure Storage 52