Percona

JUNE 22, 2023

Number of slow queries recorded Select types, sorts, locks, and total questions against a database Command counters and handlers used by queries give an overall traffic summary Along with this, PMM also comes with Query Analytics giving much detailed information about queries getting executed.

Performance 107

Performance Monitoring Traffic Database 107

John McCalpin

APRIL 2, 2020

To show that I can criticize my own work as well, here I show that sustained memory bandwidth (using an approximation to the STREAM Benchmark ) is also inadequate as a single figure of metric. (It Here I assumed a particular analytical function for the amount of memory traffic as a function of cache size to scale the bandwidth time.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. This will slow this test a little.)

Speed 126

Speed Java AWS Virtualization 126

KeyCDN

AUGUST 15, 2019

Web performance is a broad subject, and you’ll find no shortage of performance testing tips and tutorials all over the web. 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. What is Performance Testing?

Testing Tools 55

Testing Tools Best Practices Performance Testing Testing 55

IO River

NOVEMBER 15, 2023

In technical terms, network-level firewalls regulate access by blocking or permitting traffic based on predefined rules. ‍At its core, WAF operates by adhering to a rulebook—a comprehensive list of conditions that dictate how to handle incoming web traffic. It's an ongoing, iterative process. You've put new rules in place.

Traffic 52

Traffic Network Logistics Architecture 52

IO River

NOVEMBER 2, 2023

In technical terms, network-level firewalls regulate access by blocking or permitting traffic based on predefined rules. At its core, WAF operates by adhering to a rulebook—a comprehensive list of conditions that dictate how to handle incoming web traffic. After you've researched, closed breaches, and tested, you start all over again.

Traffic 40

Traffic Network Logistics Architecture 40

Rigor

DECEMBER 19, 2019

The measured traffic is not of your actual users; it is synthetically generated to collect data on page performance. Test at Every Stage of Development. Synthetic monitoring can be used to test websites and web applications in pre-production, while real user monitoring can only be used in production. Synthetic Monitoring.

Monitoring 40

Monitoring Benchmarking Website Traffic 40

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. This will slow this test a little.)

Speed 52

Speed Java AWS Virtualization 52

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Since instances of both CentOS and Ubuntu were running in parallel, I could collect flame graphs at the same time (same time-of-day traffic mix) and compare them side by side. This will slow this test a little.)

Speed 40

Speed Java AWS Virtualization 40

Alex Russell

MARCH 6, 2021

Using a global ASP as a benchmark can further mislead thanks to the distorting effect of ultra-high-end prices rising while shipment volumes stagnate. Sadly, data on latency is harder to get, even from Google's perch, so progress there is somewhat more difficult to judge. Today, either method returns a similar answer.

Performance 124

Performance Network Cache Metrics 124

Alex Russell

MAY 9, 2022

This is a complex topic, but to borrow from a recent post , web performance expands access to information and services by reducing latency and variance across interactions in a session, with a particular focus on the tail of the distribution (P75+). Consistent performance matters just as much as low average latency.

Performance 86

Performance Latency Metrics Engineering 86

Tim Kadlec

APRIL 18, 2019

Once a new network does get rolled out, it takes years for carriers to optimize it to try and close in on the promised bandwidth and latency benchmarks. There was all sorts of similar controversy when the first carriers started rolling out supposed 4G networks. We’re still nowhere close for 4G.

Network 61

Network Speed Internet Internet 61

VoltDB

JUNE 1, 2017

An opening scene involving a traffic jam of Viking boats and a musical number (“Love Can’t Afjord to wait”). Manpower Optimizers” want help with managing development and test in a large corporate environment. Latency Optimizers” – need support for very large federated deployments. Vikings fight zombies.

Hardware 56

Hardware Latency Virtualization Cloud 56

The Morning Paper

MAY 14, 2019

Last time around we looked at the DeathStarBench suite of microservices-based benchmark applications and learned that microservices systems can be especially latency sensitive, and that hotspots can propagate through a microservices architecture in interesting ways. on end-to-end latency) and less than 0.15% on throughput.

Big Data 45

Big Data Cloud Performance Hardware 45

VoltDB

JUNE 1, 2017

An opening scene involving a traffic jam of Viking boats and a musical number (“Love Can’t Afjord to wait”). Manpower Optimizers” want help with managing development and test in a large corporate environment. Latency Optimizers” – need support for very large federated deployments. Vikings fight zombies.

Hardware 40

Hardware Latency Virtualization Cloud 40

Alex Russell

OCTOBER 22, 2017

Budgets are scaled to a benchmark network & device. Automating testing against an objective baseline. Deciding what benchmark to use for a performance budget is crucial. It simulates a link with a 400ms RTT and 400-600Kbps of throughput (plus latency variability and simulated packet loss). What’s going on here?

Performance 68

Performance Benchmarking Network Mobile 68

The Netflix TechBlog

SEPTEMBER 2, 2020

Edgar captures 100% of interesting traces , as opposed to sampling a small fixed percentage of traffic. Telltale provides Edgar with latency benchmarks that indicate if the individual trace’s latency is abnormal for this given service. Is this an anomaly or are we dealing with a pattern?

Latency 296

Latency Transportation Engineering Traffic 296

Smashing Magazine

JANUARY 11, 2021

Testing And Monitoring Auditing workflow, proxy browsers, 404 page, GDPR cookie consent prompts, performance diagnostics CSS, accessibility. You can then mimic the 90th percentile’s experience for testing. CrUX generates an overview of performance distributions over time, with traffic collected from Google Chrome users.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Testing And Monitoring. You can then mimic the 90th percentile’s experience for testing. Alternatively, you can also use Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Now you have something measurable to test against.

Performance 145

Performance Cache Network Metrics 145