HammerDB

OCTOBER 18, 2019

cpupower frequency-info analyzing CPU 0: driver: intel_pstate CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: Cannot determine or is not supported. hardware limits: 1000 MHz - 4.00 hardware limits: 1000 MHz - 4.00

Benchmarking 63

Benchmarking Performance Hardware C++ 63

ACM Sigarch

APRIL 8, 2019

Below we present some thoughts on the why and one solution to address the issue. This is arguably a fundamentally hard problem for computer architecture, but efforts towards open source hardware (eg. Her current work focuses on hardware/software co-design for extremely large-scale deep learning training. Why is that?

Architecture 74

Architecture Open Source Hardware Software Engineering 74

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

The Morning Paper

DECEMBER 8, 2019

On the last morning of the conference Daniel Bittman presented some of the work being done in the context of the Twizzler OS project to explore new programming models for NVM. The Twizzler KVS (key-value store) is just 250 lines of C code, and uses one persistent object for the index structure, and a second one for the data.

Hardware 56

Hardware Programming Media Storage 56

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

Nick Desaulniers

APRIL 6, 2020

May I present to you episode I; “ Off by Two.” 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. Recent work. has given me much fulfilment and a long list of truly awful bugs to recount. halt_loop: while ( true ).

C++ 67

C++ Hardware Code Virtualization 67

HammerDB

OCTOBER 12, 2018

This post complements the previous best practice guides this time with the focus on MySQL and MariaDB and achieving top levels of performance with the HammerDB MySQL TPC-C test. As is also the case this limitation is at the database level (especially the storage engine) rather than the hardware level. order by c.

Best Practices 40

Best Practices Scalability Performance C++ 40

Sutter's Mill

APRIL 6, 2011

We know that getting full computational performance out of most machines—nearly all desktops and laptops, most game consoles, and the newest smartphones—already means harnessing local parallel hardware, mainly in the form of multicore CPU processing. This is the commoditization of the supercomputer.

Development 40

Development Hardware C++ Games 40

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. In all cases this is random data so presents no security challenges.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

The Morning Paper

JANUARY 19, 2020

“Coping with complexity” is about as good a three-word summary of the systems and software challenges facing us over the next decade as I can imagine. Remember that ‘agent’ here could be a human – trying to form a sufficient mental model to triage an incident for example – or a software agent.

C++ 50

C++ Systems Software Software 50

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

Testsigma

JUNE 19, 2020

As Agile methodology was introduced, the need for fast and continuous delivery of software applications increased. Selenium is an open-source and free software 2. It supports multi programming languages like Python, Java, C# etc. Selenium consume less hardware support for test cases execution 7. Introduction. JUnit 2.

Testing Tools 60

Testing Tools Testing Open Source Java 60

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

Alex Russell

JUNE 20, 2020

Suz Hinton's talks on WebUSB show the through-line: as the web gets more capable, whole classes of software suddenly benefit from frictionless deployment, increased safety, better privacy, and more meaningful user controls. 3] Oh, and it should be imperatively programmed with Lisp-in-C's-clothing. Together, they make software better.

Hardware 55

Hardware Games Java Media 55

John McCalpin

JANUARY 22, 2018

Dr. Damon McDougall gave a short presentation on this study at the IXPUG 2018 Fall Conference ( pdf ) — I originally wrote these notes to help organize my thoughts as we were preparing the IXPUG presentation, and later decided that the extra details contained here are interesting enough for me to post it.

Latency 40

Latency Hardware Code Testing 40

Brendan Gregg

SEPTEMBER 5, 2017

Hit Ctrl-C to end. ^C C operation = 'read' usecs : count distribution 0 -> 1 : 0 | | 2 -> 3 : 0 | | 4 -> 7 : 4479 | *| 8 -> 15 : 1028 | | 16 -> 31 : 14 | | 32 -> 63 : 1 | | [.]. They use third-party software like Docker or Kubernetes to simplify their administration. Tracing ZFS operation latency.

Virtualization 76

Virtualization AWS Engineering Hardware 76

SQL Server According to Bob

JANUARY 11, 2020

Character POS ASCII Value Formula Value A 1 65 67 C 2 67 69 Checksum 136 Comparing ​​ the checksum values indicates ​​ that the values do not match and ​​ damage ​​ has occurred to the data. This White Paper is for informational purposes only.

Servers 40

Servers Cache Database Media 40

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. When the ‘FW’ pattern is present it shows a REQ_PREFLUSH | REQ_WRITE being sent to the device. Fua = Forced Unit Access. Device Flush. Beware The Cache.

Servers 90

Servers Media Cache Storage 90

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). Gatsby (React), Vuepress (Vue) Preact CLI , and PWA Starter Kit provide reasonable defaults for fast loading out of the box on average mobile hardware. ??Also,

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). Gatsby.js (React), Preact CLI , and PWA Starter Kit provide reasonable defaults for fast loading out of the box on average mobile hardware. Image credit: Addy Osmani ) ( Large preview ).

Performance 103

Performance Cache Metrics Network 103

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). Gatsby (React), Next.js (React), Vuepress (Vue), Preact CLI , and PWA Starter Kit provide reasonable defaults for fast loading out of the box on average mobile hardware. ??Also,

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

AUGUST 22, 2021

In reality, these are actually TLS features that were already present in some form in TLS 1.2 For example, for streams A, B, and C, we might see a packet sequence of ABCABCABCABCABCABCABCABC , where we change the active stream in each packet (let’s call this round-robin). and are now fully fledged in TLS 1.3. Large preview ).

Performance 105

Performance Network Latency Servers 105