Percona

APRIL 14, 2023

Considering the example from above, even if that bit of data being requested by the users is not found in memory and needs to be retrieved from disk, that slow operation will have to be performed only once for that batch of requests. In fact, there used to be a graph to display this on PMM v.1.

Cache 88

Cache Efficiency Database Monitoring 88

Percona

AUGUST 24, 2023

To install PMM, you can use the following command: curl -fsSL [link] | /bin/bash This command will install Docker and the PMM server for you. Run the following command to start Watchtower: docker run -d --name pmm-watchtower -v /var/run/docker.sock:/var/run/docker.sock containrrr/watchtower pmm-server 2. That’s it!

Monitoring 72

Monitoring Servers Processing Database 72

Brendan Gregg

JULY 2, 2021

These typically don't have canned options ( -v , -l , etc.), I chose these to find the most performance wins with the fewest tools. There is already documentation as man pages and example files in the bcc and bpftrace repositories that you can link to, to help your customers understand the tool output. Then try running a tool.

Latency 145

Latency Cache Energy Systems 145

Percona

JANUARY 25, 2023

This post will explain easy ways to identify active databases and users in MySQL. Identifying active databases in MySQL There are various ideas we can use to identify the active databases. We can identify based on the timestamp of the data file update, an entry in a slow log, scan binary logs, and parse the audit log or general log.

Database 93

Database C++ Servers Open Source 93

SQL Server According to Bob

DECEMBER 3, 2019

I have previously tested and blogged about the NTFS, sparse, file system limitation error 665: [link] when running DBCC or using Snapshot databases with SQL Server. This paper details XFS storage format and structures: [link] – Specifically the theoretical limits table section. filefrag -v test.dat. filefrag -v test.dat.

Servers 45

Servers Systems Storage Database 45

Testsigma

JUNE 3, 2021

These software errors are usually uncovered during functionality testing, mostly can be present as: Difficult/ confusing functionality: If the user is unable to understand or perform a function on the application, then it should change. The redirection of the links on the website should be thoroughly checked. of the dialog boxes.

Software 82

Software Software Testing Hardware 82

Brendan Gregg

OCTOBER 8, 2018

Might bpftrace spew incomprehensible LLVM or BPF verifier errors (with -v)? Observability is one of many other use cases, as is [eXpress Data Path], [container security and networking], [iptables], [infrared decoding], [intrusion detection], [hyperupcalls], and [FUSE performance]. Might bpftrace SIGSEGV and coredump? eBPF does more.

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

JULY 30, 2017

Amer Ather, another performance engineer at Netflix, suggested I color the Java and kernel frames differently. stackcollapse-perf.pl | grep -v cpu_idle |./flamegraph.pl stackcollapse-perf.pl --all | grep -v cpu_idle |./flamegraph.pl After I fixed the frame pointer, profiling Java looked like this ( SVG ): It worked!

Code 40

Code Java C++ Website 40

Testsigma

DECEMBER 28, 2019

During the entire SDLC phase, there are various kinds of testing performed at different stages. Both functional and non-functional tests are executed while performing regression. Regression testing is never performed on a new module. When is Regression Testing performed? What is the Objective of Regression Testing?

Testing 53

Testing Hardware Testing Tools Strategy 53

SQL Server According to Bob

MAY 20, 2018

I have been asked several times about how to get a Performance Monitor like view on Linux. Performance Co-Pilot. PMCHART can be used much like you use performance monitor. link] The sample scripts in this post have common install package instructions. pmrep – c onvert to CSV or other formats: [link].

Monitoring 40

Monitoring Servers Performance C++ 40

Brendan Gregg

JULY 2, 2021

These typically don't have canned options ( -v , -l , etc.), I chose these to find the most performance wins with the fewest tools. There is already documentation as man pages and example files in the bcc and bpftrace repositories that you can link to, to help your customers understand the tool output. acpid [.]

Open Source 40

Open Source Latency Cache Energy 40

The Morning Paper

NOVEMBER 12, 2019

Through this paper we address the key concerns facing developers looking to apply automated verification: the effort required to write verifiers, the difficulty of diagnosing and fixing performance bottlenecks in these verifiers, and the applicability of this approach to existing systems. Symbolic evaluation primer.

Code 45

Code Systems Programming Google 45

Smashing Magazine

JULY 8, 2021

Examples of directives are v-if , v-model , v-for , etc. app, when we use something like v-model to tie data to an input in a form, we are giving the Vue.js I’ll be focusing mostly on Vue 2 as most folks and organizations still use the older version. Based on our payout feature above, we have an index.js In our Vue.js

Speed 132

Speed Processing Development Code 132

Smashing Magazine

FEBRUARY 15, 2021

Over the last few years, more and more projects are using video as an integral part of the application. This is a great direction, as videos are more engaging than still photos ( videos can double conversion rate and increase time spent on site ), and as such, can really draw customers to explore details about products and services.

Network 143

Network Speed Website Mobile 143

Brendan Gregg

OCTOBER 7, 2018

Might bpftrace spew incomprehensible LLVM or BPF verifier errors (with -v)? Observability is one of many other use cases, as is [eXpress Data Path], [container security and networking], [iptables], [infrared decoding], [intrusion detection], [hyperupcalls], and [FUSE performance]. Might bpftrace SIGSEGV and coredump? eBPF does more.

C++ 40

C++ Virtualization Programming Latency 40

Testsigma

MARCH 22, 2022

Perform a competitive analysis of the open-source test automation tools you want to consider. Choose an automation tool that meets all your testing needs and fulfills the requirements of your project. Be clear about the problems you are trying to solve with test automation. What features does the tool offer? Is it easy to install and run?

Open Source 115

Open Source Testing Innovation Software 115

Percona

DECEMBER 21, 2023

The -v for the volume guarantees that the local copy of the haproxy.cfg file is the one used inside the container. This is the actual Proof of Concept: Enter the PMM HA script: [link] The script will take care of installing PMM (if you already have it, you can skip this step), preparing the Primary, and setting up the Secondary.

Availability 97

Availability Monitoring Open Source Traffic 97

ACM Sigarch

NOVEMBER 4, 2019

He reflected on his early research of building custom architecture for neural algorithms in the early 90s, followed by the RISC-V revolution that has transformed the computing industry. He ended the keynote with a call to action for open hardware and tools to start the next wave of computing innovation.

Hardware 18

Hardware Architecture Programming Innovation 18

Smashing Magazine

NOVEMBER 17, 2022

That is why, today, Web Performance is as important and trendy as having an online presence. Table of Contents: What Is Web Performance? What Is Web Performance? Web performance refers to the speed at which a website loads, how fast it’s downloaded, and how an app is displayed on the user’s browser. Alba Silvente.

Media 105

Media Cache Website Mobile 105

Smashing Magazine

FEBRUARY 22, 2023

This is certainly frustrating for a website’s user, but even more so for its owner: in fact, there is a direct correlation between web performance and business revenue which has been corroborated time and again in a plethora of case studies. As developers, optimizing web performance must therefore be an integral part of our value proposition.

Website 108

Website Performance Ecommerce Technology 108

Smashing Magazine

OCTOBER 9, 2021

AnimXYZ is a composable, performant, and customizable CSS animation toolkit powered by CSS variables. Performant. AnimXYZ works perfectly with regular HTML and CSS, and it can be integrated in a project using the content delivery network (CDN) link. See the Pen [Contexts in AnimXYZ]([link] by Ejiro Asiuwhu.

Media 120

Media Code Efficiency Tuning 120

Percona

JULY 5, 2023

From my experience as a Support Engineer, I think the most frequent problem is query performance after an upgrade. to 5.6: [link] It is no longer the case for 8.0 downgrade: [link] You will see tons of import errors like these: $ mysql --force < 8.0.33.dump If you find it a problem, you may vote for [link].

C++ 114

C++ Database Servers Testing 114

SQL Server According to Bob

DECEMBER 18, 2018

For example, if a flight booking reports that a seat has successfully been booked, then the seat will remain booked even if the system crashes.” – [link]. Be sure to deploy SQL Server 2017 CU6 or newer for best data durability and performance results. “. “Be Patrick and Purvi doing performance and regression analytics.

Servers 90

Servers Media Cache Storage 90

The Agile Manager

APRIL 30, 2020

The thing about any crisis is that there's an expectation that there will eventually be a recovery, no matter long it takes to reach bottom and regardless the shape the recovery takes: V-shaped rebound as happened in in 1953, W-shaped as in 1981-82, U-shaped as in 1973-75 and again in 2000-03, or L-shaped as in 2008-2010.

Social Media 52

Social Media Innovation Internet Internet 52

SQL Server According to Bob

NOVEMBER 29, 2016

You can find out more on CAL licensing at [link] ). Auto Soft NUMA is enabled by default in SQL Server 2016 but can be disabled by executing ALTER SERVER CONFIGURATION SET SOFTNUMA OFF and then restarting the SQL Server instance (Note: there is a fix in SQL Server 2016 CU1 you need to apply when using this command: [link] ).

Servers 45

Servers Virtualization Scalability Hardware 45

Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 111

Virtualization AWS Hardware Storage 111

Percona

DECEMBER 22, 2023

We can create a wildcard index on the userMetadata field using the special syntax $** Let’s do it: db.user.createIndex({ "userMetadata.$**" : 1 }) db.user.getIndexes() [ { v: 2, key: { _id: 1 }, name: '_id_' }, { v: 2, key: { 'userMetadata.$**': 1 }, name: 'userMetadata.$**_1' You can test them on your own using explain().

Database 85

Database Open Source Testing Monitoring 85

Smashing Magazine

NOVEMBER 4, 2021

This prevents issues like over-fetching that can impact performance. installed by typing the following into your terminal: node -v. GraphQL On The Front-End (React And Apollo). GraphQL On The Front-End (React And Apollo). David Atanda. 2021-11-04T11:30:00+00:00. 2021-11-04T14:11:54+00:00. Let’s get right into the code. More after jump!

Cache 114

Cache Servers Transportation Code 114

Testsigma

FEBRUARY 3, 2021

Reference: [link]. Functional testing for mobile applications can be performed by-. End-to-End testing – Testing of the whole system together is performed using end-to-end testing. We perform testing from the starting of the flow till the end of the flow. Reference- [link]. Hence, the steps involved are-.

Mobile 82

Mobile Testing Hardware C++ 82

CSS - Tricks

JULY 15, 2020

Especially, when one of the main selling points of Jamstack is performance. But yeah, it’s true that even a Jamstack site can suffer hits to performance just like any other site. Don’t think that by choosing Jamstack you no longer have to think about performance. That’s not something you hear often, right? src/html.js.

Cache 71

Cache Google Analytics Servers 71

Smashing Magazine

AUGUST 30, 2021

Refactoring CSS: Optimizing Size And Performance (Part 3). Refactoring CSS: Optimizing Size And Performance (Part 3). Deploying the refactored codebase shouldn’t result in worse website performance and worse user experience. Part 3: Optimizing Size And Performance. Adrian Bece. 2021-08-30T10:00:00+00:00.

Media 108

Media Performance Cache Strategy 108

CSS - Tricks

MAY 3, 2021

It is the premier tool in the toolbox of web performance people. compile":3, "cpu.FunctionCall":3, "cpuTime":47, "index":5, "number":6 }, { "type":3, "id":"29564.13", "request_id":"29564.13", "ip_addr":"172.217.15.78", "full_url":"[link] "is_secure":1, "method":"POST", "host":"www.google-analytics.com", "url":"/j/collect?

Transportation 86

Transportation Cache Google Mobile 86

The Morning Paper

NOVEMBER 30, 2020

Alice and Bob are joint owners of linked checking and savings accounts at a bank. The state $s$ of the storage system is a total function from keys to values $V$ (some keys may be mapped to $bot$). How the database internally fulfils that contract is of no concern to the client, so long as it does. A motivating example. In section 5.2

Database 61

Database Storage Systems Strategy 61

KeyCDN

JUNE 25, 2020

Simply use the following commands: git clone [link] cd vim/src make If you already have Vim installed but want to update to the latest version, you may need to use additional Git commands which can be found here. However, if you switch to command mode, the letters on your keyboard will allow you use Vim commands to move within the text.

Games 125

Games Open Source Availability C++ 125

Smashing Magazine

SEPTEMBER 16, 2021

QA is a central part of any quality management approach and all quality management is very closely linked to risk management. V : before the visit. , I said I didn’t. They said, “you’re hired”. In 1999, I decided to apply my quality management insights to the web. I quit my job in the wine laboratory. Large preview ).

Automotive 138

Automotive Website Social Media Design 138

Percona

AUGUST 29, 2018

For optimum performance, a PostgreSQL database depends on the operating system parameters being defined correctly. Poorly configured OS kernel parameters can cause degradation in database server performance. PostgreSQL uses System V (SysV) that requires SHMMAX setting. So now it requires fewer bytes of System V shared memory.

Tuning 54

Tuning Database Servers Processing 54

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. The latest AWS hypervisor, Nitro, uses everything to provide a new hardware-assisted hypervisor that is easy to use and has near bare-metal performance. I'd expect between 0.1%

Virtualization 40

Virtualization AWS Hardware Storage 40