Brendan Gregg

APRIL 14, 2022

eBPF tools (2014-2019). A large and unexpected opportunity has come my way outside of Netflix that I've decided to try. Netflix has been the best job of my career so far, and I'll miss my colleagues and the culture. offer letter logo (2014). flame graphs (2014). PMC analysis (2017). my pandemic-abandoned desk (2020); office wall.

Java 142

Java Cloud Cache AWS 142

High Scalability

OCTOBER 3, 2019

The demand for Redis is skyrocketing across dozens of use cases, particularly for cache, queues, geospatial data, and high speed transactions.

Azure 23

Azure Cloud Open Source Cache 23

KeyCDN

MAY 6, 2020

The feature WebP caching and Brotli compression is now also available for Push Zones! WebP caching is automatically active once Image Processing is enabled and will transform images to WebP if the client supports the format. Since launching WebP caching for Pull Zones, a lot of customer started optimizing images with great success.

Cache 93

Cache Mobile Website Processing 93

Smashing Magazine

JUNE 20, 2019

2019-06-20T11:00:16+02:00. 2019-06-20T10:35:07+00:00. Browser Caching. Another built-in optimization of Google Fonts is browser caching. As the Google Fonts API becomes more widely used, it is likely visitors to your site or page will already have any Google fonts used in your design in their browser cache.

Google 111

Google Performance Cache Website 111

Dynatrace

OCTOBER 15, 2021

This occurs once data is safely stored within a local cache. To avoid this, it was announced at KubeCon 2019 in Barcelona that the OpenTracing and OpenCensus projects would converge into one project called OpenTelemetry and join the CNCF. Ingestion is critical to gathering the data we care most about.

Open Source 246

Open Source Metrics Cloud Transportation 246

Scalegrid

OCTOBER 2, 2019

October 2, 2019 – ScaleGrid, a rapidly growing leader in the Database-as-a-Service (DBaaS) space, has just launched their new fully managed Hosting on Azure for Redis™ service. The demand for Redis™ is skyrocketing across dozens of use cases, particularly for cache, queues, geospatial data, and high speed transactions.

Azure 100

Azure Availability Open Source Virtualization 100

ACM Sigarch

NOVEMBER 1, 2019

This blog post gives a glimpse of the computer systems research papers presented at the USENIX Annual Technical Conference (ATC) 2019, with an emphasis on systems that use new hardware architectures. GAIA proposed to expand the OS page cache into accelerator memory.

Architecture 12

Architecture Hardware Cache Storage 12

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. This is why our approach is briefly pausing log processing during steps 2–4 so that the watermarks are not missed. Beresford, and Boerge Svingen. Online event processing.

Database 221

Database Traffic Transportation Open Source 221

Smashing Magazine

JULY 29, 2019

2019-07-29T14:00:59+02:00. 2019-07-29T13:06:57+00:00. The United Kingdom is ranked 34th out of 207 countries for broadband speed, but in July 2019 there was still a school in the UK without broadband. Let’s talk about caching. We’re going to check out Cache-Control. I Used The Web For A Day On A 50 MB Budget.

Cache 99

Cache Mobile Google Network 99

SQL Performance

MARCH 30, 2021

) ; My test environment is SQL Server 2019 CU9 on a laptop with 8 cores and 16GB of memory allocated to the instance. Running a parallel plan on a single thread can also happen when a cached parallel plan is reused by a session that is limited to DOP 1 by an environmental setting (e.g. It can be downloaded at the same link.

Cache 98

Cache Servers Processing Operating System 98

The Netflix TechBlog

DECEMBER 17, 2019

This way, log event processing can resume event-by-event afterwards, eventually discovering the watermarks, without ever needing to cache log event entries. This is why our approach is briefly pausing log processing during steps 2–4 so that the watermarks are not missed. Beresford, and Boerge Svingen. Online event processing.

Database 206

Database Traffic Transportation Open Source 206

Speed Curve

FEBRUARY 10, 2025

11.15% of Chrome users use versions (77 to 120) that were released between 2019 to 2023. There are a number of other variables that can affect browser performance, such as: Cache and cookie overload – Most people don't clear their cache and cookies regularly (if at all). These are used by 88.32% of Chrome users.

Hardware 52

Hardware Internet Internet Speed 52

MachMetrics

DECEMBER 27, 2019

TTFB is typically reduced via server-side optimizations, such as enabling caching and database indexes. The post Year in Web Performance: 2019 appeared first on MachMetrics Speed Blog. This was one of the more shocking areas of the study. There is obviously a huge amount of work that needs to be done here concerning web performance.

Performance 52

Performance Speed Website Mobile 52

Smashing Magazine

MAY 25, 2021

A number of sites moved to font-display: swap when this first came out, and Google Fonts even made it the default in 2019. It’s also trickier to handle cached fonts we already have, not to mention differences in various fallback styles. However, beyond that it didn’t really solve the problem.

Operating System 145

Operating System Google Website Cache 145

KeyCDN

MAY 14, 2019

This will reduce the total number of image operations because once the image has been processed it will be cached by our shield servers, allowing our edge servers to pull and cache the processed image instead of having to process the image again. This will improve the image processing performance and decrease the overall cost.

Processing 13

Processing Cache Network Latency 13

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 103

Performance Latency Cache Virtualization 103

SQL Performance

MARCH 29, 2022

Simple parameterization has a number of quirks in this area, which can result in more parameterized plans being cached than expected, or finding different results compared with the unparameterized version. For the time being, let’s look at some examples using the Stack Overflow 2010 database on SQL Server 2019 CU 14. DisplayName.

Cache 90

Cache Servers Database Testing 90

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. The worldwide ASP 18 months ago was ~$300USD , so the average performance in the deployed fleet can be represented by a $300 device from mid-2019. So what did $150USD fetch in 2019?

Performance 127

Performance Network Mobile Metrics 127

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. There's not much memory left, 349 Mbytes, but more interesting is the amount in the buffer/page cache: 48,643 Mbytes (48 Gbytes). Counting cache functions.

Cache 78

Cache C++ AWS Java 78

Smashing Magazine

APRIL 17, 2019

2019-04-17T12:30:16+02:00. 2019-04-29T18:34:58+00:00. The browser caches the results of these lookups, but they can be slow. You might think of a prefetch as being a bit like adding a file to the browser’s cache. Optimizing Performance With Resource Hints. Optimizing Performance With Resource Hints. Drew McLellan.

Performance 109

Performance Servers Games Cache 109

SQL Performance

OCTOBER 7, 2020

Its raison d’être is to cache result rows from a plan subtree, then replay those rows on subsequent iterations if any correlated loop parameters are unchanged. Table-valued functions use a table variable, which can be used to cache and replay results in suitable circumstances. Spools are the least costly way to cache partial results.

Servers 106

Servers Cache Azure Performance 106

The Morning Paper

SEPTEMBER 19, 2019

We’ve been covering papers from VLDB 2019 for the last three weeks, and next week it will be time to mix things up again. I really do want to cover this one at some point, along with Implementation of cluster-wide logical clock and causal consistency in MongoDB from SIGMOD 2019.

Blockchain 46

Blockchain Hardware Google Speed 46

MachMetrics

DECEMBER 20, 2018

It’s now almost 2019, and there are no more excuses. Now let’s upload our lazy-loading updates and try again: (Note that you’ll have to do hard-reload, clear cache, or use a new private browser to ensure we’re not taking advantage of the browser cache in our testing). Well isn’t that beautiful?!

Cache 75

Cache Speed Internet Internet 75

Jos

APRIL 5, 2018

Update May 10th 2019 : Google announced during I/O 2019 that they will use an evergreen Googlebot. Googlebot renders the content in the box shown within the viewport, but not the content below it. Rendering [a test page]([link] using Google Webmaster Tools' "Fetch as Google".

Code 130

Code Performance Google Media 130

SQL Server According to Bob

MAY 19, 2019

The lock manager has partitions, lock block cache and other structures. Reduce the number of partitions and size of the cache. IO Request Caches. SQLPAL may cache I/O request structures with each thread. SQL Server 2019 builds DLLs and EXEs with 4KB file alignment to enable better demand paging. SQL Server 2019.

IoT 61

IoT Servers Development Cache 61

The Morning Paper

OCTOBER 4, 2020

The study is based on one of the world’s first commercial 5G network deployments (launched in April 2019), a 0.5 Emerging architectures that shorten the path length, e.g. edge caching and computing, may also confine the latency. km university campus. Application performance.

Energy 130

Energy Latency Performance Network 130

Smashing Magazine

JUNE 26, 2019

2019-06-26T14:00:59+02:00. 2019-06-26T14:06:48+00:00. Let the web developer handle all of the necessary speed optimizations like caching and file minification while you take on the following design tips and strategies: 1. What Web Designers Can Do To Speed Up Mobile Websites. Suzanne Scacca. Clean coding practices. Minification.

Website 111

Website Speed Mobile Design 111

MachMetrics

JUNE 30, 2021

John Mueller answered “YES” to this question in 2019, “site speed is definitely a ranking factor?”. Thanks to the awesome caching plugins available for WordPress will make your site much faster and make your pages feel lightweight when configured correctly. Enable caching. Now is that a fault of WordPress?

Cache 78

Cache Speed Google Website 78

SQL Performance

MARCH 22, 2022

In this first part, after a quick introduction, I look at the effects of simple parameterization on the plan cache. The aim is to reduce compilations by increasing cached plan reuse. Let’s look at an example, using the Stack Overflow 2010 database on SQL Server 2019 CU 14. Simple Parameterization. sp_configure. EXECUTE sys.

Cache 61

Cache Servers Database Code 61

The Netflix TechBlog

OCTOBER 18, 2019

theme of the ML Platform meetup hosted at Netflix, Los Gatos on Sep 12, 2019. In particular, he talked about the misattribution potential in a complex microservice architecture where often intermediary results are cached. Faisal Siddiqi Infrastructure for Contextual Bandits and Reinforcement Learning?—?

Infrastructure 131

Infrastructure Metrics Architecture Efficiency 131

KeyCDN

SEPTEMBER 12, 2019

Well, according to HTTP Archive , as of June 1, 2019 the average desktop page is 1,896.8 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.

Social Media 106

Social Media Media Google Website 106

HammerDB

JUNE 27, 2022

Given the increasing importance of open source and the widespread use of HammerDB, the TPC adopted HammerDB in 2019 and now hosts the project on GitHub. Cached vs Scaled Workloads. A key difference between cached and scaled workloads is the implementation of keying and thinking time to introduce a pause of time between transactions.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

Smashing Magazine

JANUARY 15, 2019

2019-01-15T13:30:32+01:00. 2019-04-29T18:34:58+00:00. But with Firefox due to begin support for it in version 65 (due in January 2019), it’s only a matter of time before remaining stragglers like Safari catch up. A particular favorite in the WordPress space is WP Super Cache. Jack Lenox. We should use HTTP2 over HTTPS.

Website Performance 78

Website Performance Website Energy Performance 78

Rigor

SEPTEMBER 3, 2019

(They seem to have learned from their mistakes for Prime Day 2019.). And Nordstrom dealt with crashes and other issues at the beginning of its popular anniversary sale in 2019. Prior to any peak event, take the time to review your CDN’s cache design and offload metrics to determine what improvements can be made.

Website 74

Website Cache Traffic Ecommerce 74

SQL Performance

MARCH 8, 2021

They are run on SQL Server 2019 CU9 , on a laptop with 8 cores, and 16GB of memory allocated to the SQL Server 2019 instance. Total elapsed time is 933ms with 6,673ms of CPU time with a warm cache. Remember, SQL Server 2019 makes batch mode processing easier to achieve in practice because it does not require a columnstore index.

Servers 95

Servers Tuning Architecture Performance 95

The Morning Paper

SEPTEMBER 24, 2019

USENIX Security Symposium 2019. Other apps access the router mac address either by reading the ARP cache (opening the file /proc/net/arp and reading its content) or by simply requesting the igd.xml (Internet gateway device configuration file) directly from the router itself.

Systems 74

Systems Traffic Network Google 74

Smashing Magazine

JUNE 30, 2021

First and foremost, this allows you to implement arbitrarily complex caching behavior, but it has also been extended to let you tap into long-running background fetches, push notifications, and other functionality that requires code to run without an associated page. Case-Study: PROXX. Further Resources. “ Case Study: Moving A Three.js-Based

Games 145

Games Architecture Code C++ 145