Brendan Gregg

FEBRUARY 28, 2023

Make sure your system can handle next-generation DRAM,” [link] , Nov 2011 [Hruska 12] Joel Hruska, “The future of CPU scaling: Exploring options on the cutting edge,” [link] , Feb 2012 [Gregg 13] Brendan Gregg, “Blazing Performance with Flame Graphs,” [link] , 2013 [Shimpi 13] Anand Lal Shimpi, “Seagate to Ship 5TB HDD in 2014 using Shingled Magnetic (..)

Performance 52

Performance Latency Cache Virtualization 52

CSS - Tricks

APRIL 1, 2021

Google’s industry benchmarks from 2018 also provide a striking breakdown of how each second of loading affects bounce rates. Source: Google /SOASTA Research, 2018. Compressing, minifying and caching assets. The final thing we can check is caching. billion if the site slowed down by just one second. Text-based assets.

Cache 92

Cache Social Media Media Website 92

Smashing Magazine

OCTOBER 26, 2018

2018-10-26T13:45:46+02:00. For that reason, we utilized two WordPress features that can help you out when serving simple JSON data out: Transients API for caching, Loading the minimum necessary WordPress using SHORTINIT constant. Headless WordPress: The Ups And Downs Of Creating A Decoupled WordPress. Denis Žoljom. post_slug || !

Cache 78

Cache Website Speed Database 78

Brendan Gregg

AUGUST 29, 2021

1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 Reads usually have apps waiting on them; writes may not (write-back caching). This is "cache busting." 17 48011 [.]

Cache 40

Cache C++ AWS Systems 40

Dynatrace

OCTOBER 15, 2021

This occurs once data is safely stored within a local cache. Then, Google made the OpenCensus project open source in 2018. Ingestion is critical to gathering the data we care most about. There are two principal ways to go about this: Local ingestion.

Open Source 215

Open Source Metrics Cloud Transportation 215

Percona

MAY 1, 2023

This blog was originally published in August 2018 and was updated in May 2023. Connection pooling: Minimizing connection overhead and improving response times for frequently accessed data by implementing mechanisms for connection pooling and caching strategies. It is just a guideline, not the exact allocated memory or cache size.

Tuning 52

Tuning Database Efficiency Performance 52

Scalegrid

FEBRUARY 11, 2019

Guillermo Rauch (@rauchg) December 18, 2018. To learn how to speed up your WordPress installation using Redis Caching, check out our Using Redis Object Cache to Speed Up Your WordPress Installation post. Powered by `php-fpm` (soon as a Lambda layer directly). ? Micro SQL instance hosted on @scalegridio (cheap!)

Serverless 138

Serverless Azure Database Lambda 138

MachMetrics

JUNE 30, 2021

Pingdom, 2018. Thanks to the awesome caching plugins available for WordPress will make your site much faster and make your pages feel lightweight when configured correctly. You will still be configuring your site caching and organize the assets in such a way that the page passes web vital tests + and loads a lot quicker.

Cache 78

Cache Speed Google Website 78

Smashing Magazine

JULY 29, 2019

A 2018 study by cable.co.uk found that Zimbabwe was the most expensive country in the world for mobile data, where 1 GB cost an average of $75.20, ranging from $12.50 Meanwhile, a study of the cost of broadband in 2018 shows that a broadband connection in Niger costs $263 ‘per megabit per month’. Let’s talk about caching.

Cache 96

Cache Google Mobile Network 96

Percona

DECEMBER 5, 2022

ProxySQL is a very useful tool for gaining high availability, load balancing, query routing, query caching, query rewriting, multiplexing, and data masking. Your MySQL connection id is 1 Server version: 5.5.30 (ProxySQL Admin Module) Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Commands end with ; or g.

Servers 60

Servers Cache C++ Metrics 60

Nick Desaulniers

JUNE 2, 2018

ccache , the compiler cache, is a fantastic way to speed up build times for C and C++ code that I previously recommended. Usually when this happens with ccache, there’s something non-deterministic about the builds that prevents cache hits. . $ Sat Mar 17 03:04:59 UTC 2018. Cold Cache. kB max cache size 5.0

Speed 46

Speed Cache C++ Systems 46

SQL Server According to Bob

FEBRUARY 5, 2018

FILE cache type was the default leading to incorrect principal errors. The klist utility is helpful to show things like the currently cached Kerberos information. Ticket cache: KEYRING:persistent:0:0. 02/05/2018 09:11:18 02/05/2018 19:11:18 krbtgt/DOMAINNAME@DOMAINNAME. renew until 02/06/2018 09:11:15.

Servers 40

Servers Code Cache Traffic 40

Brendan Gregg

AUGUST 18, 2019

6 * 7 * Copyright 2018 Netflix, Inc. the "License") 9 * 10 * 13-Sep-2018 Brendan Gregg Created this. There are also two modes visible, one between 1 and 2 milliseconds, and another between 8 and 16 milliseconds: this sounds like cache hits and cache misses. 1 /* 2 * biolatency.bt Block I/O latency as a histogram.

Latency 68

Latency C++ Cache Programming 68

KeyCDN

OCTOBER 24, 2018

As of August 2018, Helsinki alone had a population of almost 650,000 people. However, now with the Helsinki edge server in production, this helps further close the gap between visitors who live in Finland and the nearest KeyCDN POP they have access to.

Internet 48

Internet Internet Speed Network 48

SQL Server According to Bob

DECEMBER 18, 2018

Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. FILE_FLAG_NO_BUFFERING is the Win32, CreateFile API flags and attributes setting to bypass file system cache. FILE_FLAG_NO_BUFFERING is the Win32, CreateFile API flags and attributes setting to bypass file system cache.

Servers 90

Servers Media Cache Storage 90

Smashing Magazine

JANUARY 11, 2021

Build Optimizations JavaScript modules, module/nomodule pattern, tree-shaking, code-splitting, scope-hoisting, Webpack, differential serving, web worker, WebAssembly, JavaScript bundles, React, SPA, partial hydration, import on interaction, 3rd-parties, cache. This improves page load time and caching during navigations.

Performance 145

Performance Cache Media Metrics 145

All Things Distributed

JUNE 20, 2017

The new AWS Asia Pacific (Hong Kong) Region will have three Availability Zones and be ready for customers for use in 2018. Beyond running their web properties and applications, Next Digital also uses Amazon RDS (database), Amazon ElastiCache (caching), and Amazon Redshift (data warehousing).

AWS 149

AWS Logistics Cloud Social Media 149

High Scalability

NOVEMBER 30, 2018

8 : successful Mars landings; $250,000 : proposed price for Facebook Graph API; 33 : countries where mobile internet is faster than WiFi; 1000s : Facebook cache poisoning; 8.2 They'll love it and you'll be their hero forever. million : concurrent Fortnite players; 6.2 during the 2017-18 academic year, on top of a 3.3%

Internet 28

Internet Internet Scalability Blockchain 28

Dean Hume

APRIL 24, 2018

Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time. This is where service workers can make a difference. Show me the money!

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time. This is where service workers can make a difference. Show me the money!

Energy 40

Energy Cache Traffic Analytics 40

Dean Hume

APRIL 24, 2018

Without effective caching on the client, the server will see an increase in workload, more CPU usage and ultimately increased latency for the end user. They allow you to cache resources on the user's device when they visit your site for the first time. This is where service workers can make a difference. Show me the money!

Energy 40

Energy Cache Traffic Website 40

MachMetrics

DECEMBER 14, 2019

Similar to our article Average Page Load Times for 2018 , we’ll go over the averages for metrics and help you determine if your site is faster or slower than average. It is typically reduced via server-side optimizations, such as enabling caching and database indexes. Source: ThinkWithGoogle. seconds on desktop and 2.59

Best Practices 105

Best Practices Speed Mobile Google 105

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. This was starting to look like a Windows file cache bug. Maybe something to do with multi-socket coherency of the disk and cache or ??? Update, October 2018.

Programming 79

Programming Hardware Cache Code 79

The Morning Paper

DECEMBER 1, 2019

Memory might be durable, but… …it is expected that caches and registers will remain volatile. 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

Rigor

SEPTEMBER 3, 2019

In one high-profile example, Amazon dealt with significant outages on Prime Day 2018 , which may have cost them as much as $99 million in sales. JCrew’s site went down on Black Friday 2018 for five hours , costing the company more than $700,000 in sales and impacting approximately 323,000 shoppers. Case studies abound.

Website 74

Website Ecommerce Cache Traffic 74

The Morning Paper

JUNE 20, 2019

In total, there were 112 such incidents over the period March – September 2018 (not all of them affecting external customers). This is a study of every high severity production incident at Microsoft Azure services over a span of six months, where the root cause of that incident was a software bug. Constant-value setting incidents.

Cloud 81

Cloud Azure Cache C++ 81

Smashing Magazine

JANUARY 6, 2020

Globally in 2018–2019, according to the IDC, 87% of all shipped mobile phones are Android devices. PRPL stands for Pushing critical resource, Rendering initial route, Pre-caching remaining routes and Lazy-loading remaining routes on demand. 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 7, 2019

The idea is quite straightforward: Push the minimal code needed to get interactive for the initial route to render quickly, then use service worker for caching and pre-caching resources and then lazy-load routes that you need, asynchronously. In 2018, the Alliance of Open Media has released a new promising video format called AV1.

Performance 103

Performance Cache Network Metrics 103

Smashing Magazine

JANUARY 21, 2021

Plus a service worker that caches all static assets and serves them for repeat views, along with cached versions of articles that a reader has already visited. It was a much-needed cleanup indeed, as many styles that were written back in 2017–2018 have become obsolete over the years. KB, Brotlified).

Performance 145

Performance Cache Mobile Network 145

Smashing Magazine

OCTOBER 31, 2023

The truth is that the two tools were fairly distinct until PSI was updated in 2018 to use Lighthouse reporting. Why do we need Lighthouse at all when Google also offers similar reports in PageSpeed Insights (PSI)? Large preview ) Did you notice that the Performance score in Lighthouse is different from that PSI screenshot?

Speed 97

Speed Google Website Metrics 97

HammerDB

NOVEMBER 5, 2018

To illustrate the data reads on Oracle we can flush the buffer cache. Consequently we now need to increase the buffer cache in size if we are to see more CPU activity. log 2018-11-02T15:39:25.628040+00:00 Thread 1 cannot allocate new log, sequence 1403. SQL> alter system flush buffer_cache; System altered.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Percona

AUGUST 10, 2018

sec < 2018-08-06 07:22:35.199 EDT > LOG: automatic analyze of table "vactest.scott.employee" system usage: CPU 0.00s/0.02u sec elapsed 0.15 sec < 2018-08-06 07:22:35.199 EDT > LOG: automatic analyze of table "vactest.scott.employee" system usage: CPU 0.00s/0.02u sec elapsed 0.15 You May Also Like.

Tuning 44

Tuning Cache Database Storage 44

KeyCDN

SEPTEMBER 12, 2019

KeyCDN’s Cache Enabler plugin is fully compatible the HTML attributes that make images responsive. It also allows for additional control over the caching of your images as well as hotlink protection. The Cache Enabler plugin then delivers WebP images based to supported browsers. jpg 480 KB 407 KB 43 KB 89% jpg-to-webp-2.jpg

Social Media 106

Social Media Media Google Website 106

Brendan Gregg

FEBRUARY 9, 2018

This overhead can be reduced by A) pcid, fully available in Linux 4.14, and B) Huge pages. - **Cache access pattern**: the overheads are exacerbated by certain access patterns that switch from caching well to caching a little less well. virtual (bgregg-c5.9xl-i-xxx) 02/09/2018 _x86_64_ (36 CPU) 05:24:51 PM proc/s cswch/s.

Performance 75

Performance Benchmarking Cache Tuning 75

Alex Russell

APRIL 29, 2021

After years of standards discussion and the first delivered to other platforms in 2018, iOS 14.5 April 2018 , but not usable until several releases later). An extension to Service Workers that enables browsers to present users with cached content when offline. finally shipped Audio Worklets this week. Pointer Lock.

Media 145

Media Games Education Engineering 145

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. India became a 4G-centric market sometime in 2018. The Moto G4 , for example. 2] Getting accurate global information that isn't artificially reduced to averages remains an ongoing challenge.

Performance 124

Performance Network Cache Mobile 124

ACM Sigarch

MARCH 18, 2019

For example, how many buffers must a cache have to record outstanding misses if it receives 2 memory references per cycle at 2.5 He is a fellow of IEEE and the ACM, serves as Chair of the Computer Community Consortium (2018-20) and served as Wisconsin Computer Sciences Department Chair 2014-17. Figure 2: (Sub-)System for Little’s Law.

Systems 60

Systems Latency Performance Analytics 60