Dynatrace

JANUARY 31, 2024

The RAG process begins by summarizing and converting user prompts into queries that are sent to a search platform that uses semantic similarities to find relevant data in vector databases, semantic caches, or other online data sources. To observe model drift and accuracy, companies can use holdout evaluation sets for comparison to model data.

Cache 199

Cache Azure Infrastructure Monitoring 199

Enprowess

SEPTEMBER 7, 2021

Quick summary : Node vs React Comparison is not correct because both technologies are entirely different things. Node JS vs. React JS Comparison. with its low latency I/O operations, gives the benefit of ‘No buffering’ to developers. Now, let us make a comparison between React and Node.js. Node JS vs. React JS Comparison.

Open Source 52

Open Source Virtualization Programming Servers 52

Scalegrid

OCTOBER 17, 2019

In that environment, the first PostgreSQL developers decided forking a process for each connection to the database is the safest choice. It is difficult to fault their argument – as it’s absolutely true that: Each client having its own process prevents a poorly behaving client from crashing the entire database.

Architecture 200

Architecture Database Latency Servers 200

Dynatrace

JANUARY 31, 2024

The rise of data observability in DevOps Data forms the foundation of decision-making processes in companies across the globe. For DevOps teams that inform deployment strategies, optimize processes, and drive continuous improvement, the integrity and timeliness of data are of significant importance.

DevOps 189

DevOps Analytics Airlines Metrics 189

Scalegrid

JULY 29, 2020

In our final post, we will put them head-to-head in a detailed feature comparison and compare the results of PgBouncer vs. Pgpool-II performance for your PostgreSQL hosting ! It uses only one process which makes it very lightweight. If we require N parallel connections, this forks N child processes. Part 2 – PgBouncer.

Benchmarking 246

Benchmarking Database Performance Testing Availability 246

Dynatrace

SEPTEMBER 25, 2019

All processes on these hosts are recognized, and Citrix processes are grouped together in order to characterize the combined Citrix overhead on the infrastructure. Citrix user processes are also monitored, and when a user process starts to consume significant resources on a shared machine, it is surfaced by Dynatrace.

Latency 117

Latency Performance Virtualization Infrastructure 117

Alex Russell

FEBRUARY 28, 2022

Input is received and processed. The chief effect of the architectural difference is to shift the distribution of latency within the loop. Improving latency for one scenario can degrade it in another. Objections to the comparison are legion. Our goal is to minimise latency and variance in the interactivity loop.

Performance 104

Performance Latency Architecture Network 104

Percona

MARCH 29, 2023

Benefits of snappy compression in MongoDB: Fast compression and decompression speeds Low CPU usage A streamable format that allows for quick processing Minimal impact on query performance Zstandard Compression or zstd , another newer block compression method provided by MongoDB starting for v4.2, provides higher compression rates.

Storage 105

Storage Network Open Source Latency 105

Particular Software

SEPTEMBER 20, 2021

Some will claim that any type of RPC communication ends up being faster (meaning it has lower latency) than any equivalent invocation using asynchronous messaging. It’s less of an apples-to-oranges comparison and more like apples-to-orange-sherbet. There are more steps, so the increased latency is easily explained.

Benchmarking 97

Benchmarking Latency Servers Systems 97

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. for the wasm-version.

Mobile 104

Mobile Cloud Latency Games 104

CSS - Tricks

MARCH 16, 2020

This allows us to process the report later without resulting in a messy pyramid of JavaScript. 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

VoltDB

MARCH 22, 2024

The rules for this process tend to be arbitrary and can change suddenly. And while the APIs define contracts for what gets passed back and forth, we generally don’t discuss expected latency or availability. Real-world systems have real-world anomalies The real world imposes its own rules on us.

Latency 52

Latency Java Code Servers 52

KeyCDN

FEBRUARY 4, 2021

Using a fast DNS hosting provider ensures there is less latency between the DNS lookup and TTFB. Their entire network is now routinely processing over 7 billion DNS requests per month. Visit website DNS hosting providers comparison How do the free DNS providers stack up against the premium DNS services?

Cache 134

Cache Website Internet Internet 134

Adrian Cockcroft

JANUARY 20, 2023

switches to connect processing nodes, pooled memory and I/O resources into very large coherent fabrics within a rack, and use Ethernet between racks. In comparison, for Linpack Frontier operates at 68% of peak capacity. Next generation architectures will use CXL3.0

Architecture 52

Architecture Latency Benchmarking AWS 52

The Morning Paper

NOVEMBER 15, 2020

So before matching, the IDS/IPS has to reconstruct a TCP bytestream in the face of packet fragmentation, loss, and out-of-order delivery – a process known as reassembly. This makes the whole system latency sensitive. The baseline for comparison is Snort 3.0 , “the most powerful IPS in the world” according to the Snort website.

Servers 128

Servers Hardware Latency Design 128

Highly Scalable

SEPTEMBER 18, 2012

Although it can hardly be said that NoSQL movement brought fundamentally new techniques into distributed data processing, it triggered an avalanche of practical studies and real-life trials of different combinations of protocols and algorithms. Read/Write latency. Read/Write requests are processes with a minimal latency.

Database 213

Database Latency C++ Scalability 213

CSS Wizardry

AUGUST 13, 2019

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). com , which introduces yet more latency for the connection setup. If you’re interested in seeing a real-world example of this, consider the following filmstrip comparison.

Latency 203

Latency Cache Strategy Media 203

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

Tuning 135

Tuning Cache Servers Benchmarking 135

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. This is mainly because video files are notably bulkier than a simple text-based API request, which, in comparison, would be more like a droplet than an entire river.

Architecture 52

Architecture Performance Internet Internet 52

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

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. What about short-lived processes, like a service restarting in a loop? As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. These can be invisible to top(8).

Speed 126

Speed Java AWS Virtualization 126

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Statistics reveal that a 1% improvement in latency can lead to a 3% increase in viewer engagement, highlighting its significance in live content delivery.3.

Architecture 52

Architecture Performance Internet Internet 52

Smashing Magazine

MAY 16, 2022

Within the HTML delivery process, there could also be additional data that we want to understand, such as what datacenters processed the request throughout the chain. In this case, we can’t expect each layer could/should process and inject HTML content. Furthermore, service workers only process requests within the defined scope.

Servers 95

Servers Monitoring Cache Network 95

Brendan Gregg

AUGUST 8, 2017

This measures demand, which can be greater than what the system is currently processing. 42/3411 43603. . ## History The original load averages show only CPU demand: the number of processes running plus those waiting to run. The load average is an average of the number of runnable processes over a given time period.

Latency 111

Latency Metrics C++ Systems 111

Smashing Magazine

AUGUST 10, 2023

In contrast, tools like DebugBear and WebPageTest use more realistic throttling that accurately reflects network round trips on a higher-latency connection. DebugBear’s comparison feature goes beyond mini charts by providing larger charts that evaluate more things than I can possibly print for you here.

Speed 82

Speed Monitoring Testing Network 82

Brendan Gregg

OCTOBER 8, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. ^C Some one-liners: # New processes with arguments bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'.

C++ 110

C++ Virtualization Programming Latency 110

The Netflix TechBlog

JUNE 13, 2023

Replay traffic testing gives us the initial foundation of validation, but as our migration process unfolds, we are met with the need for a carefully controlled migration process. A process that doesn’t just minimize risk, but also facilitates a continuous evaluation of the rollout’s impact.

Traffic 279

Traffic Metrics Systems Strategy 279

Dynatrace

JANUARY 15, 2020

All processes on these hosts are recognized, and Citrix processes are grouped together in order to characterize the combined Citrix overhead on the infrastructure. Citrix user processes are also monitored, and when a user process starts to consume significant resources on a shared machine, it is surfaced by Dynatrace.

Latency 35

Latency Performance Virtualization Infrastructure 35

The Morning Paper

SEPTEMBER 8, 2019

I’ve been excited about the potential for approximate query processing in analytic clusters for some time, and this paper describes its use at scale in production. These clusters are in high demand and approximate query processing both saves their users time and lightens the overall load on the cluster. What are all these jobs doing??

Big Data 57

Big Data Analytics Latency Azure 57

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. What about short-lived processes, like a service restarting in a loop? As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. us on Centos and 0.68

Speed 52

Speed Java AWS Virtualization 52

The Morning Paper

MAY 28, 2019

The goal is to produce a low-energy hardware classifier for embedded applications doing local processing of sensor data. The resulting system can integrate seamlessly into a scikit-learn based development process, and dramatically reduces the total energy usage required for classification with very low latency.

Energy 52

Energy Hardware Efficiency Architecture 52

The Morning Paper

AUGUST 29, 2019

My key takeaways as a TL;DR: Store your data in S3 Use portable data format that gives you future flexibility to process it with multiple different systems (e.g. It is advantageous in the cloud to shut down compute resources when they are not being used, but there is then a query latency cost. Key findings. Query restrictions.

Architecture 76

Architecture Cloud Storage Serverless 76

HammerDB

OCTOBER 23, 2023

Stored Procedures and Client SQL comparison To test the stored procedures and client implementations, we ran both workloads against a system equipped with Intel Xeon 8280L. the time in the NET_RX Soft IRQ utilising 5% of the available CPU where the main function is net_rx_action which processes the data flow. On MySQL, we saw a 1.5X

Benchmarking 62

Benchmarking Database Network C++ 62

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. What about short-lived processes, like a service restarting in a loop? As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. These can be invisible to top(8).

Speed 40

Speed Java AWS Virtualization 40

Testsigma

JANUARY 30, 2021

Test how user-friendly an application is: Google search engine gives high priority to websites in comparison to desktop apps. Testing helps in finding latency time of an application: Users prefer to use mobile phones over desktop when they are looking for any query, booking flight/movie ticket.

Mobile 52

Mobile Testing Website Internet 52

The Morning Paper

DECEMBER 8, 2019

Therefore any programming abstraction must be low latency and the kernel needs to be kept off the path of persistent data access as much as possible. The eagle-eyed reader will have noticed another feature of this work in that quotation: the aim is to create a global address space that spans nodes and processes.

Hardware 56

Hardware Programming Media Storage 56

Brendan Gregg

OCTOBER 7, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. ^C Some one-liners: # New processes with arguments bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'.

C++ 40

C++ Virtualization Programming Latency 40