CSS Wizardry

OCTOBER 16, 2023

What is the availability, configurability, and efficacy of each? ?️ Plotted on the same horizontal axis of 1.6s, the waterfalls speak for themselves: 201ms of cumulative latency; 109ms of cumulative download. 4,362ms of cumulative latency; 240ms of cumulative download. And do any of our previous decisions dictate our options?

Cache 338

Cache Latency Strategy Speed 338

The Netflix TechBlog

FEBRUARY 20, 2019

by Jason Koch , with Martin Spier , Brendan Gregg , Ed Hunter Improving the tools available to our engineers to help them diagnose, triage, and work through software performance challenges in the cloud is a key goal for the cloud performance engineering team at Netflix. 10–20 MB/sec (it is, unsurprisingly, receiving lots of data).

Performance 217

Performance Latency Open Source Metrics 217

Dynatrace

FEBRUARY 15, 2023

SREs use Service-Level Indicators (SLI) to see the complete picture of service availability, latency, performance, and capacity across various systems, especially revenue-critical systems. This is all available out-of-the-box with the default workflow template provided by Site Reliability Guardian.

DevOps 230

DevOps Latency Traffic Best Practices 230

Percona

MARCH 20, 2023

In short, each cluster is, in reality, a single database with high availability and other functionalities built in. Let us take a look also the latency: Here the situation starts to be a little bit more complicated. MySQL Router is the one that has the higher latency no matter what. Anyhow, we are here to talk about Proxies.

Games 126

Games Latency Traffic Cache 126

The Netflix TechBlog

JUNE 13, 2023

By collecting and analyzing key performance metrics of the service over time, we can assess the impact of the new changes and determine if they meet the availability, latency, and performance requirements. One can perform this comparison live on the request path or offline based on the latency requirements of the particular use case.

Traffic 287

Traffic Metrics Systems Strategy 287

Highly Scalable

SEPTEMBER 18, 2012

Historically, NoSQL paid a lot of attention to tradeoffs between consistency, fault-tolerance and performance to serve geographically distributed systems, low-latency or highly available applications. However, consistency is a very expensive thing in distributed systems, so it can be traded not only to availability. Consistency.

Database 213

Database Latency C++ Scalability 213

Dynatrace

JANUARY 15, 2020

Having released this functionality in an Preview Release back in September 2019, we’re now happy to announce the General Availability of our Citrix monitoring extension. Synthetic monitoring: Citrix login availability and performance. Comparison of these metrics between VDAs characterizes load balancing efficiency. Citrix VDA.

Latency 37

Latency Performance Virtualization Infrastructure 37

Dynatrace

JANUARY 31, 2024

Model observability provides visibility into resource consumption and operation costs, aiding in optimization and ensuring the most efficient use of available resources. To observe model drift and accuracy, companies can use holdout evaluation sets for comparison to model data.

Cache 215

Cache Azure Infrastructure Monitoring 215

CSS Wizardry

AUGUST 13, 2019

There was no appetite from them to do so, so I decided to make it all available for free anyway—a faster web benefits everyone. Although this response has a 0B filesize, we will always take the latency hit on every single page view (and this response is basically 100% latency). Next up, we get sent to fonts.[client].com

Latency 210

Latency Cache Strategy Media 210

Scalegrid

MARCH 28, 2024

In this comparison of Redis vs Memcached, we strip away the complexity, focusing on each in-memory data store’s performance, scalability, and unique features. Performance Comparison: Redis vs Memcached Although Redis and Memcached are high-performance in-memory data stores, their performance characteristics are distinct.

Cache 130

Cache Storage Architecture Scalability 130

The Netflix TechBlog

NOVEMBER 2, 2021

Perceptual quality measurements are used to drive video encoding optimizations , perform video codec comparisons , carry out A/B testing and optimize streaming QoE decisions to mention a few. This enables us to use our scale to increase throughput and reduce latencies. The workflow is initiated. Assembly for two of the metrics (e.g.

Media 180

Media Innovation Metrics Latency 180

Dynatrace

SEPTEMBER 25, 2019

Therefore, it requires multidimensional and multidisciplinary monitoring: Infrastructure health —automatically monitor the compute, storage, and network resources available to the Citrix system to ensure a stable platform. Synthetic monitoring: Citrix login availability and performance. Dynatrace Extension: NetScaler performance.

Latency 119

Latency Performance Virtualization Infrastructure 119

Dynatrace

JANUARY 31, 2024

At its core, data observability is about ensuring the availability, reliability, and quality of data. This freshness measurement can then be used by out-of-the-box Dynatrace anomaly detection to actively alert on abnormal changes within the data ingest latency to ensure the expected freshness of all the data records.

DevOps 203

DevOps Analytics Airlines Metrics 203

KeyCDN

FEBRUARY 4, 2021

For example, if a lookup fails and times out to your first DNS server it queries the next DNS server until the correct IP address is returned, or it is unable to resolve as seen in the infamous "This webpage is not available" error below. DNS speed comparison report Who offers the best free DNS? They do quite well actually.

Cache 134

Cache Website Internet Internet 134

The Morning Paper

JANUARY 30, 2020

Edge servers are the middle ground – more compute power than a mobile device, but with latency of just a few ms. The current system assumes an application specific regression model is available on the servers which can predict processing time given the current parameters of the job (e.g. in the cloud). for the wasm-version.

Mobile 104

Mobile Cloud Latency Games 104

Percona

MARCH 29, 2023

Snappy Data size: 14.95GB Data size after compression: 10.75GB Avg latency: 12.22ms Avg cpu usage: 34% Avg insert ops rate: 16K/s Time taken to import 120000000 document: 7292 seconds Zstd (with default compression level 6) Data size: 14.95GB Data size after compression: 7.69GB Avg latency: 12.52ms Avg cpu usage: 31.72% Avg insert ops rate: 14.8K/s

Storage 115

Storage Network Open Source Latency 115

Scalegrid

MAY 11, 2024

However, it is limited by the available free memory amount, and all data is lost when the server stops. In-Memory Storage Engine, as the name suggests, stores data in memory for faster performance and lower latencies. In-memory Storage Engine This storage engine works completely in RAM, providing the fastest possible access to data.

Storage 130

Storage Engineering Cache Database 130

The Netflix TechBlog

MARCH 13, 2020

Compared to the most recent master version of libaom (AV1 reference software), SVT-AV1 is similar in compression efficiency and at the same time achieves significantly lower encoding latency on multi-core platforms when using its inherent parallelization capabilities.

Open Source 160

Open Source Efficiency C++ Speed 160

The Morning Paper

NOVEMBER 15, 2020

This makes the whole system latency sensitive. So we need low latency, but we also need very high throughput: A recurring theme in IDS/IPS literature is the gap between the workloads they need to handle and the capabilities of existing hardware/software implementations. The target FPGA for Pigasus has 16MB of BRAM.

Servers 128

Servers Hardware Latency Design 128

The Netflix TechBlog

JANUARY 24, 2022

Technically, “performance” metrics are those relating to the responsiveness or latency of the app, including start up time. While test metrics and metrics collected during real use do not lend themselves to direct comparison, measuring the relative change in metrics in pre-production builds can help us to anticipate regressions in production.

Performance 210

Performance Performance Testing Metrics Testing 210

CSS - Tricks

MARCH 16, 2020

Google Lighthouse is one of the best-automated tools available on a web developer's utility belt. In addition, Lighthouse also collects other metrics that aren’t listed in this part of the report but are still in an appropriate format to be included in the comparison. How should the metric comparison be output to the console?

Google 82

Google Latency Website Metrics 82

Percona

APRIL 7, 2023

Here’s how the same test performed when running Percona Distribution for PostgreSQL 14 on these same servers: Queries: reads Queries: writes Queries: other Queries: total Transactions Latency (95th) MySQL (A) 1584986 1645000 245322 3475308 122277 20137.61 MySQL (B) 2517529 2610323 389048 5516900 194140 11523.48 Why is that?

Tuning 139

Tuning Cache Servers Benchmarking 139

Percona

DECEMBER 11, 2023

DLVs are particularly advantageous for databases with large allocated storage, high I/O per second (IOPS) requirements, or latency-sensitive workloads. The DLV, of course, affects the WRITE operations the most, and hence, the write-only test should be given the most consideration for the comparison of the DLV configuration vs. standard RDS.

AWS 104

AWS Benchmarking Performance Traffic 104

Brendan Gregg

AUGUST 8, 2017

Based on the date, I looked up the kernel mailing list archives to find the actual patch, but the oldest email available is from June 1995, when the sysadmin writes: "While working on a system to make these mailing archives scale more effecitvely I accidently destroyed the current set of archives (ah whoops).".

Latency 111

Latency Metrics C++ Systems 111

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. Checking those available: $ cat /sys/devices/system/clocksource/clocksource0/available_clocksource.

Speed 103

Speed Java AWS Virtualization 103

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 99

Performance Latency Metrics Engineering 99

Adrian Cockcroft

SEPTEMBER 23, 2024

There are three generations of GPUs that are relevant to this comparison. The Hopper H100 was announced in 2022 and is the current volume product that people are using, so that is used as the baseline for comparison. The HGX H100 8-GPU system is the baseline for comparison, and its datasheet performance is shownbelow.

Benchmarking 52

Benchmarking Energy Architecture Latency 52

Alex Russell

APRIL 29, 2021

This post mines publicly available data on the pace of compatibility fixes and feature additions to assess the claim. The information it captures is, however, available going back somewhat further, providing a fuller picture of the trend lines of engine completeness. Count of APIs available from JavaScript by Web Confluence.

Media 145

Media Games Education Engineering 145

Sutter's Mill

FEBRUARY 12, 2024

Because “high-performance low-latency” is kind of C++’s bailiwick, and because it’s my course, you’ll be unsurprised to learn that the topics and code focus on C++ and include coverage of modern C++17/20/23 features. Presented by Alfasoft.

C++ 40

C++ Latency Code Technology 40

The Morning Paper

AUGUST 29, 2019

We focused on OLAP-oriented parallel data warehouse products available for AWS and restricted our attention to commercially available systems. The experimental results focus on six main areas of comparison: query restrictions system initialisation time query performance cost data compatibility with other systems scalability.

Architecture 76

Architecture Cloud Storage Cache 76

Adrian Cockcroft

JANUARY 20, 2023

In comparison, for Linpack Frontier operates at 68% of peak capacity. I have always been particularly interested in the interconnects and protocols used to create clusters, and the latency and bandwidth of the various offerings that are available.

Architecture 52

Architecture Latency Benchmarking AWS 52

Smashing Magazine

MAY 16, 2022

By stepping back and realizing that the fields available have no special bindings to particular types of data, we can see that this technique is also an effective delivery mechanism for any arbitrary data allowing lots of interesting possibilities. For Images, Stylesheets, JS files, the HTML Doc, etc. Wrapping Up.

Servers 95

Servers Monitoring Cache Network 95

VoltDB

MARCH 22, 2024

And while the APIs define contracts for what gets passed back and forth, we generally don’t discuss expected latency or availability. When you are looking at the potential to auto-generate 50% of your code, the drawbacks above become instantly ‘okay’ in comparison How does this all relate to Volt?

Java 52

Java Latency Servers Code 52

VoltDB

MARCH 21, 2024

The most obvious and common way this happens is when companies try to evolve their caches into a data platform that can, for example, be used as highly available enterprise key-value stores for volatile data. Step 4: A highly available cache You’ve now evolved from a simple cache into something rather more elaborate.

Cache 52

Cache Database Storage Availability 52

Smashing Magazine

AUGUST 10, 2023

Even with all of the available tools at my disposal, I still find myself reaching for several of them. In contrast, tools like DebugBear and WebPageTest use more realistic throttling that accurately reflects network round trips on a higher-latency connection. Lighthouse results. Real usage data would be better, of course.

Speed 82

Speed Monitoring Testing Network 82

The Morning Paper

SEPTEMBER 8, 2019

The paper presents results on TCP-H (which looks a bit like a toy compared to the real production queries, but is useful for comparison), as well as from some production-like queries. Five queries improve substantially on both latency and total compute hours. 8 out of the 22 TPC-H queries cannot be advantaged by sampling.

Big Data 57

Big Data Analytics Latency Azure 57

KeyCDN

SEPTEMBER 12, 2019

The PHP library for the API is available on GitHub. 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. Depending on the image and format, reductions in size of up to 70% are possible. KB (30%) without losses.

Social Media 106

Social Media Media Google Website 106