HammerDB

JANUARY 5, 2019

Some opinions claim that “Benchmarks are meaningless”, “benchmarks are irrelevant” or “benchmarks are nothing like your real applications” However for others “Benchmarks matter,” as they “account for the processing architecture and speed, memory, storage subsystems and the database engine.”

Benchmarking 40

Benchmarking Database Social Media Scalability 40

Dynatrace

FEBRUARY 10, 2022

Let me describe this new capability with the help of an example you may have stumbled upon Log4Shell. A perfect OWASP benchmark score for injection attacks – 100% accuracy and zero false positives – impressively proves the precision of our approach. This is one step towards delivering the promise of runtime application self-protection.

Traffic 237

Traffic Benchmarking Innovation Java 237

Dynatrace

MAY 5, 2021

Quality gates are benchmarks in the software delivery lifecycle that define specific, measurable, and achievable success criteria a service must meet before moving to the next phase of the software delivery pipeline. For example, improving latency by as little as 0.1 Enforcing benchmarks in real time. What are quality gates?

Benchmarking 188

Benchmarking Latency Speed Software 188

HammerDB

APRIL 19, 2023

For example, if you are buying the latest Amazon memory-optimized EC2 instance (R7iz), the AWS page ( [link] ) tells us the following: Up to 3.9 For example, if you are buying the latest Amazon memory-optimized EC2 instance (R7iz), the AWS page ( [link] ) tells us the following: Up to 3.9 For storage, FIO is generally used.

Performance 54

Performance Benchmarking Cache Storage 54

HammerDB

OCTOBER 18, 2018

In this example a test with 2 minute rampup and 5 minute test time can be seen. It is also clear that most significant wait event is “log file sync” and therefore tuning should focus on the redo log performance. The user CPU is highlighted in green and the aim for maximum performance is for the top event to be CPU. .

Benchmarking 40

Benchmarking Monitoring Performance C++ 40

Dynatrace

JULY 16, 2019

Synthetic clickpath monitors are a great way to automatically monitor and benchmark business-critical workflows 24/7. Some common examples of such business-critical workflows include: Sign-up processes. The example below shows an automatically generated report for a Contact support form. Dynatrace news. Contact forms.

Monitoring 164

Monitoring Retail Benchmarking Tuning 164

Percona

OCTOBER 12, 2023

An example of a flame graph can be found below: Each box is a function in the stack, and wider boxes mean more time the system was busy on CPU on these functions. An example is kubectl-flame ( [link] ). For example, if you specify the NodeJS language, it produces the flame graph based on perf output. ✔ Launching profiler.

Code 106

Code Tuning C++ Benchmarking 106

Dynatrace

AUGUST 5, 2020

First contentful paint : The time spent from navigation to when the browser renders the first bit of content (for example, text, images). This is definitely a great starting benchmark against which to optimize your application. Largest contentful paint (LCP) was also selected as one of the three Core Web Vitals by Google.

Metrics 220

Metrics Monitoring Performance Benchmarking 220

The Morning Paper

NOVEMBER 3, 2019

Perhaps the most interesting lesson/reminder is this: it takes a lot of effort to tune a Linux kernel. For example: “Red Hat and Suse normally required 6-18 months to optimise the performance an an upstream Linux kernel before it can be released as an enterprise distribution”, and. Headline results. Security related root causes.

Performance 108

Performance Benchmarking Tuning Hardware 108

Percona

MARCH 23, 2023

Each of them has its own limits and advantages: for example, XFS is fast in deleting large files, while EXT4 can provide better performance on fast SSD drives, and ZFS on Linux has progressed a lot. Benchmark before you decide. If you see concurrency issues, you can tune this variable. I hope this helps! and MariaDB 10.5.4

Performance 123

Performance Hardware Tuning Storage 123

Percona

MARCH 27, 2023

A lot of useful information can be retrieved from this schema, for example, table metadata and foreign key relations, but trying to query I_S can induce performance degradation if your server is under heavy load, as shown in the following example test. You can read some optimization examples in the official doc: [link].

Cache 98

Cache Hardware Servers Benchmarking 98

Dynatrace

APRIL 8, 2021

These served as our benchmark when creating our Lambda monitoring extension. A Lambda function behind an API gateway can provide exactly such an API endpoint to fetch data from other AWS services, or even to call back into the enterprise application to fetch data from, for example, a mainframe. Top enterprise use-cases for AWS Lambda.

Lambda 226

Lambda AWS Serverless Monitoring 226

The Morning Paper

NOVEMBER 28, 2019

The testbed for APALACHE (pitted against TLC) is a collection of examples from the TLA+ Examples project on GitHub. Some of these examples have been hand-tuned to make them efficient for TLC to check, no such tuning is done for APALACHE. 4 seconds on this same benchmark). It’s not all good news though.

Tuning 106

Tuning Benchmarking Efficiency Systems 106

Percona

NOVEMBER 3, 2023

Have you tuned your environment? What are the potential impacts of prolonged downtime, for example? Percona, for example, has helped hundreds of companies migrate to open source. This means they can ensure that every possible scenario is tested, from data integrity checks to performance benchmarks.

Database 80

Database Open Source Benchmarking Strategy 80

Dynatrace

APRIL 8, 2021

These served as our benchmark when creating our Lambda monitoring extension. A Lambda function behind an API gateway can provide exactly such an API endpoint to fetch data from other AWS services, or even to call back into the enterprise application to fetch data from, for example, a mainframe. Top enterprise use-cases for AWS Lambda.

Lambda 188

Lambda AWS Serverless Monitoring 188

Dynatrace

MAY 30, 2020

To deliver outstanding customer experience for your applications and websites, you need reliable benchmarks that measure what good customer experience looks like. First input start : The point in time when the user first interacts (for example, clicks) with the page. Dynatrace news.

Metrics 133

Metrics Performance Benchmarking Monitoring 133

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. However, it is crucial that the benchmarking application does not have inherent bottlenecks that artificially limits the scalability of the database. Basic Benchmarking Concepts. To benchmark a database we introduce the concept of a Virtual User.

Programming 67

Programming Benchmarking Virtualization C++ 67

HammerDB

NOVEMBER 5, 2018

This post at an entry-level discusses the options you have to improve log throughput in your benchmark environment. . The first example shows a data load, the second a TPC-C based workload with 5 virtual users and the 2nd example with 10 virtual users. A good example of how tuning is an iterative process.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

The Morning Paper

JUNE 27, 2019

Systems researchers are doing an excellent job improving the performance of 5-year old benchmarks, but gradually making it harder to explore innovative machine learning research ideas. Take a simple example: it would be really nice if we could have named dimensions instead of always having to work with indices. a research paper.

Systems 87

Systems Tuning Programming Innovation 87

Dynatrace

FEBRUARY 25, 2021

What the Lambda team introduced in 2018, for example, the new Firecracker VM, has since been fully rolled out. When we set out to create the new Lambda extension, we benchmarked other dedicated Lambda monitoring solutions that were already on the market. Stay tuned?for Lambda worker nodes. just a first step—we have lots of?great?functionality?in

Lambda 224

Lambda AWS Monitoring Serverless 224

The Netflix TechBlog

OCTOBER 19, 2020

a Netflix member via Twitter This is an example of a question our on-call engineers need to answer to help resolve a member issue?—?which Our engineering teams tuned their services for performance after factoring in increased resource utilization due to tracing. which is difficult when troubleshooting distributed systems.

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

Percona

JANUARY 19, 2023

Example (using the employee sample DB ): Suppose we have the following schema: db1 employees> show create table employeesG 1. Example: Creating four simple tables to store strings but using different data types: db1 test> CREATE TABLE tb1 (id int auto_increment primary key, test_text char(200)); Query OK, 0 rows affected (0.11

Open Source 85

Open Source Storage Database Big Data 85

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. For example, using my [perf-tools]: sudo./perf-tools/bin/funccount

Performance 75

Performance Benchmarking Cache Tuning 75

Rigor

JANUARY 13, 2020

Take, for example, The Web Almanac , the golden collection of Big Data combined with the collective intelligence from most of the authors listed below, brilliantly spearheaded by Google’s @rick_viscomi. Progressive Web App Dev by Example. Web Performance Tuning. Inclusive Components. Using Webpagetest.

Performance 75

Performance Social Media Website Website Performance 75

IO River

NOVEMBER 15, 2023

For example, if a request activates a rule designed to block SQL injection attempts, the WAF might automatically block that request, preventing it from reaching your web application.‍Security Two of them are particularly gnarly: fine-tuning rules to perfection and managing a WAF over a multi-CDN architecture.

Traffic 52

Traffic Network Logistics Architecture 52

KeyCDN

AUGUST 15, 2019

Before you begin tuning your website or application, you must first figure out which metrics matter most to your users and establish some achievable benchmarks. Bottlenecks can occur, for example, if you have a sudden surge in traffic that your servers are not equipped to handle. What is Performance Testing?

Testing Tools 55

Testing Tools Best Practices Performance Testing Testing 55

Percona

AUGUST 5, 2023

For example, when inserting or deleting data, the database engine only needs to modify the relevant partitions, which can be much faster than performing these operations on the entire table. This helps identify potential issues and fine-tune the partitioning strategy. For example, rebuilding large partitions might often impact uptime.

Strategy 40

Strategy Storage Database Best Practices 40

Percona

AUGUST 30, 2018

Let’s examine the TPC-C Benchmark from this point of view, or more specifically its implementation in Sysbench. The illustrations below are taken from Percona Monitoring and Management (PMM) while running this benchmark. Analyzing read/write workload by counts. Analyzing Read/Write Workload by Response Time.

Benchmarking 46

Benchmarking Database Operating System Architecture 46

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. I then analyzed performance during the benchmark ([active benchmarking]), and used other benchmarks to confirm findings. For example, using my [perf-tools]: sudo./perf-tools/bin/funccount

Performance 40

Performance Benchmarking Cache Tuning 40

IO River

NOVEMBER 2, 2023

For example, if a request activates a rule designed to block SQL injection attempts, the WAF might automatically block that request, preventing it from reaching your web application.‍Security Flywheel‍‍When it comes to fortifying web applications, think of security as a flywheel—an ever-revolving cycle that gains momentum with each turn.

Traffic 40

Traffic Network Logistics Architecture 40

Smashing Magazine

JUNE 3, 2022

One example is the difference between the typefaces’ x-height’s (the height of a lowercase x) of any two typefaces we are testing. So as an example, let’s say that we want to test a serif typeface against another serif and then again a sans serif against another sans serif. I would like to make things more complicated.

Performance 110

Performance Design Best Practices Testing 110

Apica

MAY 10, 2019

Load and stress-testing benchmark goals for the backend technological components. These companies should involve multiple organizations during Apica’s load testing to observe and pinpoint opportunities for performance tuning. User scenarios specifically expected to have high-loads.

Testing 40

Testing Performance Social Media Wireless 40

Smashing Magazine

JANUARY 7, 2022

So say, for example, a troublesome area of your product is a gash in the sidewall of your tire. For example, what if there’s construction (technical debt)? Worse yet, once the work is batched they insert user research that should have been done to inform the original work effort to what the real benchmark (MVP) should be.

Design 92

Design Logistics Strategy Benchmarking 92

Speed Curve

DECEMBER 25, 2013

Source: Guy Podjarny However, we do now have a full set of techniques to effectively deliver highly performative sites that not only visually scale across devices but also deliver code and assets tuned to the width of a device. A great example using the above techniques is the new Guardian newspaper website, currently in alpha.

Performance 60

Performance Mobile Website Benchmarking 60

HammerDB

OCTOBER 12, 2018

As with the previous guides as an Intel employee (#IAMINTEL) the examples are taken from a MySQL 8 on Linux on Intel system and the approach is the same for whatever system you are testing although some of the settings you see may be different. an example is shown of the shortest of these: . An example MySQL my.cnf file is shown.

Best Practices 40

Best Practices Scalability Performance C++ 40

The Netflix TechBlog

MARCH 14, 2023

An example of using Machine Learning to find shots of Eleven in Stranger Things and surfacing the results in studio application for the consumption of Netflix video editors. Here is an example of the desired output when the user searches for “red race car” across the entire content library. a close-up shot).

Media 291

Media Innovation Energy Architecture 291

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. of the “adjusted peak performance”, there is no longer a significant upside to performance tuning.

Latency 40

Latency Hardware Code Testing 40