Brendan Gregg

AUGUST 18, 2019

C @ns: [256, 512) 10900 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [512, 1k) 18291 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [1k, 2k) 4998 |@@@@@@@@@@@@@@ | [2k, 4k) 57 | | [4k, 8k) 117 | | [8k, 16k) 48 | | [16k, 32k) 109 | | [32k, 64k) 3 | |. hardware Hardware counter-based instrumentation. Hit Ctrl-C to end. ^C

Latency 68

Latency C++ Cache Programming 68

HammerDB

OCTOBER 8, 2018

This post gives a HOWTO guide on system configuration for achieving top levels of performance with the HammerDB PostgreSQL TPC-C test. CPUs which run at the same hardware frequency: 0. hardware limits: 1000 MHz - 3.80 current CPU frequency: Unable to call hardware. Copyright (C) 2003-2018 Steve Shaw.

Best Practices 40

Best Practices Scalability Performance Hardware 40

Randon ASCII

FEBRUARY 25, 2018

See the end of the post for an October 2018 bug fix update, or read the whole story: Flaky failures are the worst. In this particular investigation, which spanned twenty months, we suspected hardware failure, compiler bugs, linker bugs, and other possibilities. Update, October 2018. failure rate.

Programming 79

Programming Hardware Cache Code 79

Percona

JANUARY 17, 2019

On multi-core machines – which is the majority of the hardware nowadays – and in the cloud, we have multiple cores available for use. In all versions of MySQL – at least at the time of writing – when you run a single query it will run in one thread, effectively utilizing one CPU core only. With faster disks (i.e.

Cache 47

Cache C++ AWS Airlines 47

The Morning Paper

DECEMBER 1, 2019

Plus ça change, plus c’est la même chose. Moreover, for better performance, the processor may change the order in which writes reach the NVRAM, making it difficult for the NVRAM to even reflect a consistent prefix of the computation.

Efficiency 60

Efficiency Cache C++ Performance 60

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

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. cmpl $1000000000, %eax.

Latency 40

Latency Hardware Code Testing 40

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 6, 2020

Globally in 2018–2019, according to the IDC, 87% of all shipped mobile phones are Android devices. 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). In 2018, the Alliance of Open Media has released a new promising video format called AV1.

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). 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