CSS Wizardry

MAY 31, 2019

Critical assets are far too valuable to leave on someone else’s servers. This is exactly what Rawgit did in October 2018, yet (at the time of writing) a crude GitHub code search still yielded over a million references to the now-sunset service, and almost 20,000 live sites are still linking to it! Risk: Service Shutdowns. to just 3.6s.

Cache 274

Cache Latency Infrastructure Website 274

The Netflix TechBlog

MARCH 1, 2021

It supports both high throughput services that consume hundreds of thousands of CPUs at a time, and latency-sensitive workloads where humans are waiting for the results of a computation. The subsystems all communicate with each other asynchronously via Timestone, a high-scale, low-latency priority queuing system. Warm capacity.

Serverless 228

Serverless Media Latency Social Media 228

Brendan Gregg

OCTOBER 8, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Here's key differences as of August 2018: Type DTrace bpftrace. It's shaping up to be a DTrace version 2.0: I wrote seeksize.d

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

Brendan Gregg

JULY 4, 2021

I summarized these topics and more as a plenary conference talk, including my own predictions (as a senior performance engineer) for the future of computing performance, with a focus on back-end servers. Ford, et al., “TCP

Performance 52

Performance Latency Hardware Storage 52

John McCalpin

JANUARY 9, 2019

This week I updated three of those posts — two really old ones (primarily of interest to computer architecture historians), and one from 2018: July 2012: Local and Remote Memory Latency on AMD Processors in 2-socket and 4-socket servers. December 2013: Notes on Memory Bandwidth on the Xeon Phi (Knights Corner) Coprocessor.

Latency 40

Latency Architecture Servers Performance 40

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. DevTools throttling is easier to set up, but doesn’t accurately reflect how server connections work on the network. Large preview ) TTFB identifies how fast or slow a web server is to respond to requests.

Speed 97

Speed Google Website Metrics 97

All Things Distributed

NOVEMBER 13, 2018

ENEL is using AWS to transform its entire business, closing all of their data centers by 2018, migrating workloads from over 6,000 on-premises servers onto AWS in nine months, and using AWS IoT services to better manage and understand energy consumption. ENEL is one of the leading energy operators in the world. million unique visits.

AWS 167

AWS Energy Automotive Traffic 167

Brendan Gregg

OCTOBER 7, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Here's key differences as of August 2018: Type DTrace bpftrace. It's shaping up to be a DTrace version 2.0: I wrote seeksize.d

C++ 40

C++ Virtualization Programming Latency 40

All Things Distributed

APRIL 4, 2017

The new AWS EU (Stockholm) Region will have three Availability Zones and will be ready for customers to use in 2018. This enables customers to serve content to their end users with low latency, giving them the best application experience. Over the past decade, we have seen tremendous growth at AWS.

AWS 116

AWS Airlines Latency Games 116

High Scalability

SEPTEMBER 14, 2018

72 : signals sensed from a distant galaxy using AI; 12M : reddit posts per month; 10 trillion : per day Google generated test inputs with 100s of servers for several months using OSS-Fuzz; 200% : growth in Cloud Native technologies used in production; $13 trillion : potential economic impact of AI by 2030; 1.8 They'll love you even more.

Internet 30

Internet Internet Scalability Education 30

The Netflix TechBlog

MARCH 13, 2020

As mentioned in our earlier blog post , Intel and Netflix have been collaborating on the SVT-AV1 encoder and decoder framework since August 2018. SVT-AV1 uses parallelization at several stages of the encoding process, which allows it to adapt to the number of available cores, including the newest servers with significant core count.

Open Source 154

Open Source Efficiency C++ Speed 154

ACM Sigarch

MARCH 25, 2019

How many buffers are needed to track pending requests as a function of needed bandwidth and expected latency? Can one both minimize latency and maximize throughput for unscheduled work? The M/M/1 queue will show us a required trade-off among (a) allowing unscheduled task arrivals, (b) minimizing latency, and (c) maximizing throughput.

Systems 53

Systems Latency Performance C++ 53

KeyCDN

OCTOBER 24, 2018

With Helsinki being the capital and most populous municipality of Finland, it makes for a great edge server location. Although both countries are relatively close to one another, they are separated by a distance of approximately 500km, which adds up in terms of latency.

Internet 48

Internet Internet Speed Network 48

SQL Performance

FEBRUARY 26, 2020

Azure SQL Database Managed Instance became generally available in late 2018. Organizations are taking advantage of having managed backups, lots of built-in security features, an uptime SLA of 99.99%, and an always up-to-date environment where they are no longer responsible for patching SQL Server or the operating system.

Azure 63

Azure Performance Storage Latency 63

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. I’m going to update my referenced URL to the new site to help decrease latency that adds drag to the initial page load. Improvement #2: The Critical Render Path.

Cache 92

Cache Social Media Media Network 92

HammerDB

OCTOBER 12, 2018

Historically MySQL has been positioned for supporting web-based applications this is in contrast to enterprise based database workloads that have been served by commercial databases such as Oracle, Db2 and SQL Server. maximum transition latency: Cannot determine or is not supported. . c_ytd_payment: 10.00 7 rows in set (0.00

Best Practices 40

Best Practices Scalability Performance C++ 40

KeyCDN

JUNE 20, 2019

According to Monetate , the following conversion rate results were gathered for Q3 of 2017 until Q3 of 2018. The global conversion rate for Q3 of 2018 was 2.42% down from 2.78% in Q2. With a CDN, you can offload your static assets such as product images, videos, GIFs, CSS files, and much more to the CDN’s edge servers.

Ecommerce 41

Ecommerce Speed Website Mobile 41

Percona

JULY 1, 2023

This post was originally published in July 2018 and was updated in July 2023. It efficiently manages read and write operations, optimizes data access, and minimizes contention, resulting in high throughput and low latency to ensure that applications perform at their best. What are the differences between Aurora and RDS?

AWS 52

AWS Database Serverless Storage 52

HammerDB

OCTOBER 8, 2018

This limitation is at the database level rather than the hardware level, nevertheless with up to date hardware (from mid-2018) PostgreSQL on a 2 socket system can be expected to deliver more than 2M PostgreSQL TPM and 1M NOPM with the HammerDB TPC-C test. . maximum transition latency: Cannot determine or is not supported. Latency: 0.

Best Practices 40

Best Practices Scalability Performance Hardware 40

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

Dean Hume

APRIL 24, 2018

As data centers and volumes of servers have grown, so has the overall amount of electricity consumed around the world. Electricity used by servers doubled between 2000 and 2005 (and has continued growing ever since) from 12 billion to 23 billion kilowatt hours. Server Power Consumption (Source: Intel Labs 2008).

Energy 40

Energy Cache Traffic Website 40

HammerDB

NOVEMBER 5, 2018

If you are new to running Oracle, SQL Server, MySQL and PostgreSQL TPC-C workloads with HammerDB and have needed to investigate I/O performance the chances are that you have experienced waits on writing to the Redo, Transaction Log or WAL depending on the database you are testing. SQL Server DELAYED_DURABILITY. Checkpoint not complete.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. Delta is used in production since 2018 for datastore synchronization and event processing use cases in Netflix studio applications. All aboard the Databus!:

Database 197

Database Traffic Transportation Open Source 197

The Netflix TechBlog

DECEMBER 17, 2019

Passive instances across regions are also possible, though it is recommended to operate in the same region as the database host in order to keep the change capture latencies low. Delta is used in production since 2018 for datastore synchronization and event processing use cases in Netflix studio applications. All aboard the Databus!:

Database 212

Database Traffic Transportation Open Source 212

Smashing Magazine

SEPTEMBER 6, 2021

Next, we’ll look at how to set up servers and clients (that’s the hard part unless you’re using a content delivery network (CDN)). This difference by itself doesn’t do all that much (it mainly reduces the overhead on the server-side), but it leads to most of the following points. Server Sharding and Connection Coalescing.

Network 105

Network Servers Cache Traffic 105

Alex Russell

SEPTEMBER 11, 2018

If performance is a problem, we can do progressive enhancement through Server-Side Rendering. I can count on one hand the number of teams I’ve worked with who have goals that allow them to block launches for latency regressions, including Google products. — Alex Russell (@slightlylate) August 27, 2018.

Development 65

Development Government Mobile Network 65

Smashing Magazine

JANUARY 7, 2019

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? Long FMP usually indicates JavaScript blocking the main thread, but could be related to back-end/server issues as well.

Performance 104

Performance Cache Network Metrics 104

Alex Russell

MARCH 6, 2021

India became a 4G-centric market sometime in 2018. Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. If there's a bright spot in our construction of a 2021 baseline for performance, this is it. 5G looks set to continue a bumpy rollout for the next half-decade.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

JANUARY 11, 2021

In the end, it’s not the load events or server response times that define the experience, but the perception of how snappy the interface feels. It used to provide an insight into how quickly the server outputs any data. This knowledge will give you the best optimization target for ongoing efforts. What does it mean?

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Is it worth exploring tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, server push, clients hints, HTTP/2, service workers and — oh my — edge workers? It used to provide an insight into how quickly the server outputs any data. What does it mean?

Performance 145

Performance Cache Network Metrics 145

Alex Russell

OCTOBER 22, 2017

Late-loading JavaScript can cause “server-side rendered” pages to fail in infuriating ways. The server sends it as a stream of bytes and when the browser encounters each of the sub-resources referenced in the document, it requests them. For a timely introduction, I recommended Kevin Schaaf’s recent talk.

Performance 68

Performance Benchmarking Network Mobile 68

KeyCDN

SEPTEMBER 12, 2019

The main reason is because it decreases the latency to the user where they are located by serving your images from a POP physically closest to them. Another is to ensure that the settings on your server and or CDN are setup correctly. 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

Alex Russell

FEBRUARY 3, 2023

They understood that most websites lack tight latency budgeting, dedicated performance teams, hawkish management reviews, ship gates to prevent regressions, and end-to-end measurements of critical user journeys. "Server-Side Rendering", a.k.a. "SSR" " [ an intro to "isomorphic javascript", a.k.a. "Server-Side

Social Media 119

Social Media Website Technology Technology 119