Scalegrid

JANUARY 25, 2024

Key Takeaways Critical performance indicators such as latency, CPU usage, memory utilization, hit rate, and number of connected clients/slaves/evictions must be monitored to maintain Redis’s high throughput and low latency capabilities. Similarly, an increased throughput signifies an intensive workload on a server and a larger latency.

Metrics 130

Metrics Monitoring Latency Cache 130

Scalegrid

DECEMBER 21, 2023

Identifying key Redis® metrics such as latency, CPU usage, and memory metrics is crucial for effective Redis monitoring. To monitor Redis® instances effectively, collect Redis metrics focusing on cache hit ratio, memory allocated, and latency threshold. Providing them with clear insights into their system’s performance overall.

Strategy 130

Strategy Monitoring Latency DevOps 130

Dynatrace

OCTOBER 23, 2023

This presents a challenge for IT operations teams, specifically in identifying and addressing performance issues or planning how to prevent future issues. Therefore, they experience how the application code functions and how the application operations depend on the underlying hardware resources and the operating system managed by Hyper-V.

Efficiency 216

Efficiency Virtualization Hardware Performance 216

CSS Wizardry

AUGUST 7, 2019

The first—and often most surprising for people to learn—thing that I want to draw your attention to is that TTFB counts one whole round trip of latency. The reason is because mobile networks are, as a rule, high latency connections. Last mile latency deals with the disproportionate complexity toward the terminus of a connection.

Latency 269

Latency Ecommerce Servers Mobile 269

Sutter's Mill

FEBRUARY 13, 2017

Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). On April 25-27, I’ll be in Stockholm (Kista) giving a three-day seminar on “High-Performance and Low-Latency C++.” If you’re interested in attending, please check out the links, and I look forward to meeting and re-meeting many of you there.

Latency 51

Latency C++ Hardware Performance 51

Dynatrace

JANUARY 31, 2024

While off-the-shelf models assist many organizations in initiating their journeys with generative AI (GenAI), scaling AI for enterprise use presents formidable challenges. It requires specialized talent, a new technology stack to manage and deploy models, an ample budget for rising compute costs, and end-to-end security.

Cache 206

Cache Azure Infrastructure Monitoring 206

Sutter's Mill

FEBRUARY 12, 2024

Presented by Alfasoft. 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.

C++ 40

C++ Latency Code Technology 40

Percona

NOVEMBER 3, 2023

And now, execute the benchmark: -- execute the following on the coordinator node pgbench -c 20 -j 3 -T 60 -P 3 pgbench The results are not pretty. psql pgbench <<_eof1_ qecho adding node citus3. select citus_add_node('citus3', 5432); qecho rebalancing shards across TWO nodes.

Database 105

Database Benchmarking Latency C++ 105

John McCalpin

DECEMBER 6, 2016

The Xeon Phi x200 (Knights Landing) has a lot of modes of operation (selected at boot time), and the latency and bandwidth characteristics are slightly different for each mode. This reduces the number of “hops” required for request/response/coherence messages on the mesh, and should reduce both latency and contention.

Latency 40

Latency Cache Testing Systems 40

Dynatrace

FEBRUARY 4, 2021

As a discipline, SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response. ” According to Google, “SRE is what you get when you treat operations as a software problem.” SRE drives a “shift left” mindset.

Engineering 256

Engineering DevOps Government Latency 256

Scalegrid

DECEMBER 14, 2023

For example, if there’s some trouble connecting due to networking problems or excessive load requests from customers present on the server’s side, that might result in a resolution-related delay causing a subsequent timeout problem.

Java 130

Java Network Servers Database 130

Dynatrace

APRIL 25, 2023

Higher latency and cold start issues due to the initialization time of the functions. Data visualization : how to present, explore and interpret observability data from serverless functions intuitively, clearly, and holistically? Enable faster development and deployment cycles by abstracting away the infrastructure complexity.

Serverless 210

Serverless Lambda Azure AWS 210

Brendan Gregg

JULY 4, 2021

This was a chance to talk about other things I've been working on, such as the present and future of hardware performance. The video is on [youtube]: The slides are on [slideshare] or as a [PDF]: I work on many areas of performance, but recently I've had a lot of demand to talk about BPF. Ford, et al., “TCP

Performance 140

Performance Latency Hardware Storage 140

The Netflix TechBlog

JUNE 4, 2019

Because microprocessors are so fast, computer architecture design has evolved towards adding various levels of caching between compute units and the main memory, in order to hide the latency of bringing the bits to the brains. This avoids thrashing caches too much for B and evens out the pressure on the L3 caches of the machine.

Cache 251

Cache Latency Airlines Logistics 251

Scalegrid

MARCH 14, 2024

Key elements, including: Cloud Backup and Disaster Recovery Hybrid Cloud Security Interoperability Compliance Must be considered carefully to facilitate smooth workload movement between environments while reducing latency. It should offer user-friendly operation. Capabilities for handling diverse data management functions are necessary.

Strategy 130

Strategy Cloud Artificial Intelligence Infrastructure 130

Randon ASCII

JANUARY 12, 2022

It was a lot of fun, and the work was appreciated, so a few months before the console shipped I got a present from the leadership of the project – an entire silicon wafer of Xbox 360 CPUs! One benchmark I wrote measured the L2 cache latency. So, anyway. I wrote a lot of benchmarks. Standard stuff. So that’s interesting. mm distance!

Cache 126

Cache Latency Benchmarking Hardware 126

The Netflix TechBlog

MARCH 4, 2024

In this blog post, we present our project on Auto Remediation, which integrates the currently used rule-based classifier with an ML service and aims to automatically remediate failed jobs without human intervention. Upon further profiling, we found that most of the latency came from the candidate generated step (i.e.,

Tuning 210

Tuning Efficiency Big Data Engineering 210

Adrian Cockcroft

JANUARY 29, 2023

The mean and percentile measurements hide this structure, but the rest of this post will show how the structure can be measured and analyzed so that you can figure out a useful model of your system, understand what is driving the long tail of latencies and come up with better SLAs and measures of capacity.

Lambda 98

Lambda Latency Cache C++ 98

InfoQ

APRIL 15, 2024

The presenter shared the lessons learned from evolving and operating the platform, including cluster management and library versioning. At the QCon London 2024 conference, Félix GV from LinkedIn discussed the AI/ML platform powering the company’s products. By Rafal Gancarz

Artificial Intelligence 103

Artificial Intelligence Big Data Data Engineering Latency 103

Dynatrace

FEBRUARY 4, 2021

As a discipline, SRE focuses on improving software system reliability across key categories including availability, performance, latency, efficiency, capacity, and incident response. ” According to Google, “SRE is what you get when you treat operations as a software problem.” SRE drives a “shift left” mindset.

Engineering 178

Engineering DevOps Government Latency 178

IO River

NOVEMBER 2, 2023

When an edge server goes down, end users in the affected region may experience an increase in latency for that specific location. Having more PoPs in diverse locations reduces latency by bringing content closer to end-users, and minimizing the distance data needs to travel.Â

Architecture 52

Architecture Cache Performance Latency 52

IO River

NOVEMBER 2, 2023

When an edge server goes down, end users in the affected region may experience an increase in latency for that specific location. Having more PoPs in diverse locations reduces latency by bringing content closer to end-users, and minimizing the distance data needs to travel.

Architecture 52

Architecture Cache Performance Latency 52

ACM Sigarch

MAY 31, 2023

However, building and utilizing HCM presents challenges, including interconnecting various memory technologies (e.g., even lowered the latency by introducing a multi-headed device that collapses switches and memory controllers. Figure 2: Latency characteristics of memory technologies (source: Maruf et al.,

Latency 52

Latency Hardware Cache Architecture 52

The Netflix TechBlog

APRIL 27, 2023

The fundamental idea behind Telltale is to detect anomalies on SLI metrics (for example, latency, error rates, etc). Finally, we switched Telltale , our holistic application health monitoring system, from polling a metrics cache to using realtime Atlas Streaming.

Storage 288

Storage Cache Metrics Database 288

Dynatrace

APRIL 6, 2022

Observability can identify the baseline user experience and allow teams to improve it by optimizing page load times or reducing latency. Cloud environments present IT complexity challenges that don’t exist in on-premises data centers. Why full-stack observability matters.

DevOps 233

DevOps Innovation Infrastructure Analytics 233

Adrian Cockcroft

JANUARY 20, 2023

The next day Jack presented his Turing Award Lecture as the keynote for the event ( HPCwire has a good summary of the whole talk), and later in the the week he was on a panel discussion on “Reinventing HPC” where he repeated the point. I presented a keynote for Sun at Supercomputing 2003 in Phoenix Arizona and included the slide shown below.

Architecture 52

Architecture Latency Benchmarking AWS 52

Scalegrid

DECEMBER 16, 2019

We ran performance tests for MongoDB on DigitalOcean vs. AWS vs. Azure and found that DigitalOcean performance was in line with, if not better, on both high throughput and low latency in the deployment. DigitalOcean Droplets. The most basic Droplet is their Standard instance which uses shared CPU starting at just $5/month.

Azure 187

Azure AWS Latency Database 187

Percona

MARCH 29, 2023

When this data block is read, it decompresses it in memory and presents it to the incoming request. When data is written to disk, MongoDB compresses it with a specified block compression method and then writes it to disk. Block compression can improve performance by allowing data to be read and written in smaller chunks.

Storage 108

Storage Network Open Source Latency 108

Adrian Cockcroft

AUGUST 1, 2022

photo by Adrian I gave a talk at Monitorama in Portland Oregon in June, which set out the idea that carbon is just another metric to monitor, and that in a few years most of the monitoring and performance tuning tools are going to be reporting and optimizing for carbon alongside latency, throughput, availability and cost.

AWS 52

AWS Virtualization DevOps Latency 52

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 110

Performance Latency Cache Virtualization 110

CSS Wizardry

MARCH 3, 2019

This means that, if the Cache-Control: max-age=60 header is still present, the cached file’s 60 seconds starts again. If, however, there wasn’t a new file on the server, we’ll bring back a 304 header, no new file, but an entire roundtrip of latency. We can completely cut out the overhead of a roundtrip of latency.

Cache 264

Cache Latency Strategy Servers 264

John McCalpin

APRIL 2, 2020

This was a keynote presentation at the “2nd International Workshop on Performance Modeling: Methods and Applications” (PMMA16), June 23, 2016, Frankfurt, Germany (in conjunction with ISC16 ). This data is from the 2007 presentation.

Benchmarking 59

Benchmarking Performance Latency Architecture 59

The Netflix TechBlog

AUGUST 30, 2021

A timeline of the transition from Spring KafkaListener to Alpakka-Kafka is presented here for a better understanding of the motivations for the transition. By the following morning, alerts were received regarding high memory consumption and GC latencies, to the point where the service was unresponsive to HTTP requests.

Latency 213

Latency Traffic Transportation Hardware 213

Percona

NOVEMBER 2, 2023

Improved performance : MongoDB continually fine-tunes its database engine, resulting in faster query execution and reduced latency. Navigating common MongoDB upgrade challenges Even with a well-thought-out plan, MongoDB upgrades can present challenges.

Best Practices 87

Best Practices Hardware Tuning Scalability 87

Percona

JULY 20, 2023

Meanwhile, Hans-Jürgen Schönig’s presentation , which brought up the old discussion of Unix socket vs. TCP/IP connection, triggered me to write about other aspects of network impact on performance. Following wait events are captured from a really fast/low latency network. See the next session for details.

Network 63

Network Performance Latency Servers 63

Scalegrid

FEBRUARY 8, 2024

Durability Availability Fault tolerance These combined outcomes help minimize latency experienced by clients spread across different geographical regions. Opting for synchronous replication within distributed storage brings about reinforced consistency and integrity of data, but also bears higher expenses than other forms of replicating data.

Storage 130

Storage Systems Big Data Azure 130

All Things Distributed

OCTOBER 16, 2019

But as the number of IoT devices and use cases grow, people are finding that managing these connected devices presents new challenges. For some applications, a trip to the cloud and back isn't possible because of latency requirements (for example, an autonomous car interpreting its environment in real time).

IoT 126

IoT Healthcare Internet Internet 126