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.

Performance 110

Performance Latency Cache Virtualization 110

Dynatrace

AUGUST 10, 2019

Having the ability to monitor the performance and availability of your organization’s internal applications—in addition to your organization’s customer-facing applications—from within your corporate network is an important benefit of synthetic monitoring. Windows 2016 Server (or a supported Linux distribution ).

Monitoring 103

Monitoring Hardware Tuning Mobile 103

Dynatrace

OCTOBER 28, 2021

In 2010, Netflix introduced a technology to switch production software instances off at random — like setting a monkey loose in a server room — to test how the cloud handled its services. Thus, the tool Chaos Monkey was born. Any failures in the stack break the hypothesis. Blast radius. That’s a good thing.

Engineering 225

Engineering Entertainment Cloud Infrastructure 225

Alex Russell

MARCH 6, 2021

Thanks to progress in networks and browsers (but not devices), a more generous global budget cap has emerged for sites constructed the "modern" way: ~100KiB of HTML/CSS/fonts and ~300-350KiB of JS (compressed) is the new rule-of-thumb limit for at least the next year or two. Modern network performance and availability.

Performance 124

Performance Network Cache Metrics 124

SQL Server According to Bob

JULY 13, 2016

20+ years ago when I joined Microsoft I was handed a diskette (maybe it was two), and was told “Here is SQL Server. So I proceeded to install SQL Server 4.20 There was a GUI as part of setup but within just a few clicks, SQL Server was installed and ready for use. So now there are more choices to make when installing SQL Server.

Servers 40

Servers Media Engineering Virtualization 40

Percona

APRIL 12, 2023

Whereas many open source software offerings — like the community version of MySQL — use the GNU General Public License ( GPL ), MongoDB has been under the GNU Affero General Public License ( AGPL ) and more recently under the Server Side Public License ( SSPL ), introduced by MongoDB itself. Is MongoDB free to use?

Open Source 82

Open Source Programming Database Servers 82

Percona

SEPTEMBER 19, 2023

This issue most often occurs when there is significant MySQL server activity during the backup operation, and the redo log file storage media operates faster than the backup storage media. Enabling redo log archiving on the server requires setting a value for the innodb_redo_log_archive_dirs system variable. Type 'help' or '?'

C++ 106

C++ Servers Storage Speed 106

Brendan Gregg

JULY 4, 2021

AWS Graviton2); for memory with the arrival of DDR5 and High Bandwidth Memory (HBM) on-processor; for storage including new uses for 3D Xpoint as a 3D NAND accelerator; for networking with the rise of QUIC and eXpress Data Path (XDP); and so on.

Performance 52

Performance Latency Hardware Storage 52

SQL Server According to Bob

FEBRUARY 10, 2019

. · Failures occur from remote clients or sqlcmd executed directory on the server (/opt/mssql-tools/bin). SQL Server 2017 CU10 does not show behavior. · SQL Server 2017 CU12 exhibits the behavior. Server is a Superdome with lots of CPUs and RAM. Network Trace. Here is an example of a valid SQL Server login.

Servers 40

Servers Network Database Systems 40

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.

Performance 52

Performance Latency Cache Virtualization 52

KeyCDN

JANUARY 31, 2019

Today we’re excited to announce that we’ve launched yet another POP location to help further supercharge our network’s content delivery speeds. With Bucharest being the capital and largest city of Romania, it makes for a great edge server location. As of 2016, Bucharest alone had a population of over 1.83

Internet 48

Internet Internet Ecommerce Speed 48

KeyCDN

OCTOBER 24, 2018

Today we’re excited to announce that we’ve launched yet another POP location to help further supercharge our network’s content delivery speeds. With Helsinki being the capital and most populous municipality of Finland, it makes for a great edge server location. As of 2016, there were just over 5.1

Internet 48

Internet Internet Speed Network 48

Brendan Gregg

OCTOBER 8, 2018

bpftrace has most of DTrace's capabilities and more. ## bpftrace The prior work that led to [bpftrace] (aka BPFtrace) is discussed my earlier [DTrace for Linux 2016] post, which explains how the Linux kernel gained [eBPF]: the virtual machine that we're using to run tracing programs. bcc is powerful but laborious to program. eBPF does more.

C++ 110

C++ Virtualization Programming Latency 110

CSS - Tricks

APRIL 1, 2021

Using a network request inspector, I’m going to see if there’s anything we can remove via the Network panel in DevTools. I like using Fiddler , and when I inspect the network requests I see that there are indeed some old URLs and redirects floating around. We can repoint all our redirect-to-slow-site URLs to the updated URL.

Cache 92

Cache Social Media Media Website 92

Rigor

JANUARY 13, 2020

These are the bestsellers in the web performance field, including the good old Speed Up Your Site (2003) by Andy King; Steve Souders’ Even Faster Web Sites (2009) ; Ilya Grigorik’s High Performance Browser Networking (2013) ; Tammy Everts’ Time is Money (2016) ; and a handful of more recent publications.

Performance 75

Performance Social Media Website Website Performance 75

Brendan Gregg

NOVEMBER 29, 2017

In this configuration, the AMI and boot is paravirt (PV), the kernel is making hypercalls instead of privileged instructions, and the system is using paravirt network and storage drivers. But not all workloads: some are network bound (proxies) and storage bound (databases). ## 5. AWS called this [enhanced networking].

Virtualization 111

Virtualization AWS Hardware Storage 111

MachMetrics

JUNE 30, 2021

from wpostats, 2016 ). The factors that impact on LCP: Slow origin server response times Render-blocking JavaScript and CSS on page load Page Resource load times User side page rendering. Role of web servers in page load time –. You must have been suggested to choose a fast web server for better performance and reliable uptime.

Cache 78

Cache Speed Google Website 78

Smashing Magazine

JANUARY 15, 2019

So, apart from powering servers with renewable energy, what else can web developers do about climate change? This includes the work done by the server, the client and the intermediary communications networks that transmit data between the two. In 2016, O’Reilly published “ Designing For Sustainability ” by Tim Frick.

Website Performance 73

Website Performance Website Energy Performance 73

Brendan Gregg

SEPTEMBER 5, 2017

LTS (April 2016). I wrote about it in a previous post, [DTrace for Linux 2016]. I wrote a page on it: [perf]. - **eBPF**: tracing features completed in 2016, this provides efficient programmatic tracing to existing kernel frameworks. Oracle VM Server is based on Xen. The hardest part on Linux is now done: kernel support.

Virtualization 76

Virtualization AWS Engineering Hardware 76

Rigor

MARCH 20, 2018

I recently was asked the following question by an online retailer: “Why should I invest in monitoring the user experience when I already have monitoring for our database, infrastructure, app server, and network?”. Instead of asking that question, I asked them this: “Are you a network or hosting provider?

Monitoring 40

Monitoring Retail Ecommerce Infrastructure 40

SQL Performance

SEPTEMBER 2, 2021

SQL Server 2016 brought us STRING_SPLIT , a native function that eliminates the need for many of the custom solutions we’ve needed before. I’ve written several articles about this function (and STRING_AGG, which arrived in SQL Server 2017) since this post was written: Performance Surprises and Assumptions : STRING_SPLIT().

C++ 59

C++ Servers Testing Database 59

Alex Russell

OCTOBER 22, 2017

We constrain ourselves to a real-world baseline device + network configuration to measure progress. Budgets are scaled to a benchmark network & device. Late-loading JavaScript can cause “server-side rendered” pages to fail in infuriating ways. The median user is on a slow network. Global Ground-Truth.

Performance 68

Performance Benchmarking Network Mobile 68

The Morning Paper

SEPTEMBER 29, 2019

As the primary source of third-party JavaScript packages for the client-side, server-side, and other platforms, npm is the centrerpiece of a large and important software ecosystem. that means any third-party package can access the file system and network etc. , but also high leverage points for defence. The npm ecosystem.

Code 76

Code Strategy Website Network 76

Alex Russell

MARCH 31, 2022

De-duplication can prevent multiple copies on disk, but we're out of luck on reducing network costs. Late in the drafting of this post, it was pointed out to me by Frederik Braun that Brad Hill had considered the downsides of a site-populated SRI addressable cache back in 2016. and SFTP -ing one's dependencies to the server are gone.

Cache 82

Cache Government Traffic Network 82

Brendan Gregg

OCTOBER 7, 2018

bpftrace has most of DTrace's capabilities and more. ## bpftrace The prior work that led to [bpftrace] (aka BPFtrace) is discussed my earlier [DTrace for Linux 2016] post, which explains how the Linux kernel gained [eBPF]: the virtual machine that we're using to run tracing programs. bcc is powerful but laborious to program. eBPF does more.

C++ 40

C++ Virtualization Programming Latency 40

Rigor

JULY 2, 2019

Time spent on redirect is most noticeable on mobile devices, especially since they tend to use slower networks. You can find more information about modifying this file within your server’s documentation. Originally published September 2016, updated July 2019. Reducing the Use of Redirection. Use Responsive Layouts.

Mobile 60

Mobile Traffic Google Latency 60

Scalegrid

AUGUST 15, 2019

In 2014, we discussed 4 of the top MongoDB GUIs: MongoVue, MongoHub, RockMongo, and Robo 3T (formerly Robomongo), and again in 2016: MongoDB Compass, Robo 3T, Studio 3T, and MongoBooster. Should have an excellent way to measure server and query performance. Import data from RDBMS like MySQL, PostgreSQL, and SQL Server.

Database 40

Database Servers Monitoring Availability 40

Alex Russell

MAY 9, 2022

Reduced network and device capacity correlate with other access challenges. Folks with powerful laptops, new iPhones, and low-latency networks are noticing, which is a very bad sign. Do they have a device-class or network condition target ? miAi3020A9G #perfmatters 1 10:04 AM · Jul 7, 2016. sales, marketing, etc.)?

Performance 86

Performance Latency Metrics Engineering 86

Rigor

SEPTEMBER 11, 2019

Follow him on Twitter @ RickByers and be sure to watch the video of his conversation at Chrome Dev Summit 2016 , where he discussed the ways Chrome is “improving predictability for developers.” The future of HTTP/2 server push. MDN (Mozilla Developers Network) @MozDevNet. ” Paul Calvano. Paul Calvano.

Performance 89

Performance Education Google Website 89

Rigor

SEPTEMBER 3, 2019

What you may be overlooking is that peak-event readiness is about more than just load testing or ensuring that your servers are up throughout a specific timeframe. Servers down or server health issues [APM]. Traffic patterns outside of normal [RUM or Analytics]. Response code or issues with the rendered page [Synthetic].

Website 74

Website Cache Traffic Ecommerce 74

Brendan Gregg

NOVEMBER 28, 2017

In this configuration, the AMI and boot is paravirt (PV), the kernel is making hypercalls instead of privileged instructions, and the system is using paravirt network and storage drivers. But not all workloads: some are network bound (proxies) and storage bound (databases). ## 5. AWS called this [enhanced networking].

Virtualization 40

Virtualization AWS Hardware Storage 40

Smashing Magazine

JUNE 26, 2019

In this case, my website is “slow”, even when served on 4G networks. After all, Opens Sans is a Google Font that has to be served from Google’s servers. When served from a local server, Open Sans took 0.530 milliseconds to load. seconds too long. Which I wholeheartedly agree with.). Source: KeyCDN ) ( Large preview ).

Website 110

Website Speed Mobile Design 110

Percona

JANUARY 14, 2019

Public API as -a-service has become a good business model: examples include social networks like Facebook/Twitter, messaging as a service like Twilio, and even credit card authorization platforms like Marqeta. So can we use it as our main datastore? Let’s imagine we are running a webservice and provide a public API. voting','maven'] ?

Database 40

Database Analytics Blockchain Healthcare 40

Smashing Magazine

OCTOBER 26, 2018

In addition to MVC separation, we can (for security reasons or speed improvements) place the JS App on a separate server like in the schema below: Decoupled WordPress diagram. on December 6th, 2016. If you decide to use the method described in this article, be sure you know how to fortify your server security. Large preview ).

Cache 79

Cache Website Speed Database 79

The Symphonia

DECEMBER 6, 2017

without web app servers?—?to to a massively distributed CDN network a possibility. There have been some improvements since re:Invent 2016 but to see nothing announced at this re:Invent was very disappointing. We continue to be fascinated to see how people will use Lambda@Edge over the coming years. But this year? Step Functions.

Serverless 40

Serverless Lambda AWS Traffic 40

High Scalability

AUGUST 8, 2018

Niantic launched Pokémon GO in the summer of 2016. As shown in Figure 11-5, when it launched, Pokémon GO used Google’s regional Network Load Balancer (NLB) to load-balance ingress traffic across a Kubernetes cluster. Figure 11-5. Pokémon GO (pre-GCLB).

Google 130

Google Games Entertainment Cloud 130

All Things Distributed

DECEMBER 13, 2016

In just this past month we've had HSBC , ARM , Missguided , and most recently at re:Invent 2016 , Trainline , talking with us about how they are using AWS to transform and scale their businesses. I have been humbled by just how much our UK customers have been able to achieve using AWS technology so far.

AWS 166

AWS Cloud Artificial Intelligence IoT 166