Scalegrid

OCTOBER 17, 2019

A long time ago, in a galaxy far far away, ‘threads’ were a programming novelty rarely used and seldom trusted. In that environment, the first PostgreSQL developers decided forking a process for each connection to the database is the safest choice. It would be a shame if your database crashed, after all.

Architecture 200

Architecture Database Latency Servers 200

Dynatrace

APRIL 5, 2021

AWS Lambda is a serverless compute service that can run code in response to predetermined events or conditions and automatically manage all the computing resources required for those processes. Real-time file processing, for quickly indexing files, processing logs, and validating content.

Lambda 180

Lambda AWS Serverless Hardware 180

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. Its goal is to assign running processes to time slices of the CPU in a “fair” way. So why mess with it?

Cache 251

Cache Latency Airlines Logistics 251

Scalegrid

MARCH 28, 2024

Redis can be configured to optimally utilize both RDB and AOF persistence methods optimally, achieving a balance between speed and data safety while minimizing the impact on response times due to its child process handling for disk writes. Scalable reads across multiple instances are possible. step in to simplify this task.

Cache 130

Cache Storage Scalability Architecture 130

Dynatrace

OCTOBER 4, 2022

However, organizations must structure and store data inputs in a specific format to enable extract, transform, and load processes, and efficiently query this data. These include application programming interfaces, streaming, and more. Massively parallel processing. Data lakehouses deliver the query response with minimal latency.

Artificial Intelligence 208

Artificial Intelligence Storage Analytics Government 208

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

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

Dynatrace

OCTOBER 4, 2021

An application programming interface (API) is a set of definitions and protocols for building and integrating application software that enables your product to communicate with other products and services. As a result, API monitoring has become a must for DevOps teams. So what is API monitoring? What is API Monitoring?

Monitoring 178

Monitoring Latency Metrics Availability 178

Scalegrid

DECEMBER 14, 2023

All these steps should be tailored based on application requirements to ensure smooth running operations from timeouts caused due to bad connections or dropped sockets with separate limits defined for each type of situation faced within the MongoDB configuration process. x+ in Java). Modifying this setting does affect performance.

Java 130

Java Network Servers Database 130

The Morning Paper

FEBRUARY 6, 2020

On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network. Programming model. Cloudburst programs are written in Python.

Serverless 98

Serverless Lambda Cache Latency 98

Scalegrid

JANUARY 12, 2024

In the realm of cloud-based business operations, there is an increasing dependence on complex information processing patterns. To this vital function is workload automation which optimizes scheduling, execution, and monitoring processes for each individual task or process within cloud-based workflows.

Cloud 130

Cloud Virtualization Storage Efficiency 130

Dynatrace

NOVEMBER 3, 2021

Monitoring , by textbook definition, is the process of collecting, analyzing, and using information to track a program’s progress toward reaching its objectives and to guide management decisions. Log entries describe events, such as starting a process, handling an error, or simply completing some part of a workload.

Monitoring 220

Monitoring Metrics DevOps Scalability 220

Brendan Gregg

AUGUST 18, 2019

For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. For smaller environments, it can be of more use helping eliminate latency outliers. bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set.

Latency 68

Latency C++ Cache Programming 68

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. 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

Percona

JULY 20, 2023

Following wait events are captured from a really fast/low latency network. Obviously, the PostgreSQL process has to spend time in “DataFileExtend,” “WALWrite,” and “WALSync.” The delay/latency becomes more visible when there is a lot of back-and-forth communication between the client and server.

Network 63

Network Performance Latency Servers 63

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. The call for participation ends on March 2nd 23:59 SGT! Ford, et al., “TCP

Performance 110

Performance Latency Cache Virtualization 110

Percona

NOVEMBER 9, 2023

Role-Based Access Control (RBAC) : RBAC manages permissions to ensure that only individuals, programs, or processes with the proper authorization can utilize particular resources. It is an invaluable tool for resolving complicated issues and streamlining processes due to its flexibility and scalability. have adopted Kubernetes.

Efficiency 104

Efficiency Cloud Healthcare Open Source 104

Dynatrace

JULY 10, 2019

This article we help distinguish between process metrics, external metrics and PurePaths (traces). If you already have the OneAgent installed, and you’d like to bring in additional process metrics into Dynatrace , the OneAgent plugin is a good fit. To get more process metrics, use a OneAgent plugin. Use the OneAgent SDK.

Java 137

Java Best Practices Metrics Azure 137

Percona

DECEMBER 26, 2023

This simplifies debugging and analysis processes by enabling users to execute the same query. Capture Actual Parameters in the Queries : pg_stat_monitor allows you to choose if you want to see queries with placeholders for parameters or actual parameter data. tps, lat 11.718 ms stddev 3.951 progress: 4440.0

Benchmarking 122

Benchmarking Metrics C++ Database 122

The Morning Paper

JANUARY 28, 2020

Shredder is " a low-latency multi-tenant cloud store that allows small units of computation to be performed directly within storage nodes. " If you want a lightweight, fast-starting, easy to program for, embeddable application runtime that also offers isolation, then a natural choice is V8 isolates. High performance.

Serverless 99

Serverless Storage Latency Cloud 99

Brendan Gregg

JULY 2, 2021

E.g., to see process execution with timestamps using execsnoop(8): # execsnoop-bpfcc -T. Low frequency events such as process execution should be negligible to capture. execsnoop New processes (via exec(2)) table. biolatency Disk I/O latency histogram heat map. runqlat CPU scheduler latency heat map.

Latency 145

Latency Cache Energy Systems 145

The Netflix TechBlog

NOVEMBER 22, 2019

This entertaining romp through the tech stack serves as an introduction to how we think about and design systems, the Netflix approach to operational challenges, and how other organizations can apply our thought processes and technologies. We explore all the systems necessary to make and stream content from Netflix.

AWS 100

AWS Entertainment Open Source Benchmarking 100

The Netflix TechBlog

NOVEMBER 22, 2019

This entertaining romp through the tech stack serves as an introduction to how we think about and design systems, the Netflix approach to operational challenges, and how other organizations can apply our thought processes and technologies. We explore all the systems necessary to make and stream content from Netflix.

AWS 100

AWS Entertainment Open Source Benchmarking 100

Testsigma

JULY 23, 2020

Desktop Application – Desktop application is a name coined for a general program used to run on a personal computer or laptop. This is a standalone software program which doesn’t depend on any internet connectivity for its working and its performance is not impacted because of any network related latencies.

Testing 63

Testing Internet Internet Latency 63

The Morning Paper

JUNE 23, 2019

Factor VI in the 12-factor app manifesto , “Execute the app as one or more stateless processes,” to be dropped and replaced with “Execute the app as one or more stateful processes.” session state that you want to survive an application process crash), and to keep the application server/services layer stateless.

Cache 79

Cache Latency Google Lambda 79

The Morning Paper

MAY 12, 2019

The paper examines the implications of microservices at the hardware, OS and networking stack, cluster management, and application framework levels, as well as the impact of tail latency. The top line shows the change in tail latency across a set of monolithic applications as operating frequency decreases. Hardware implications.

Open Source 61

Open Source Hardware Benchmarking Systems 61

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Was there some other program consuming CPU, like a misbehaving Ubuntu service that wasn't in CentOS? What about short-lived processes, like a service restarting in a loop? These can be invisible to top(8). in total.

Speed 126

Speed Java AWS Virtualization 126

Dotcom-Montior

NOVEMBER 24, 2021

With the rapid advancements in web application technologies, programming languages, cloud computing services, microservices, hybrid environments, etc., This complexity is “hidden” to the end user, like how an API (Application Programming Interface) operates, whether that is an actual user or another computer. No Shared Memory.

Systems 74

Systems Monitoring Hardware Network 74

The Morning Paper

JUNE 30, 2019

In such a situation I’d expect to see unusually high latencies, but normal throughput). I was only partially right (there is a steady-state queue involved)… Plus, although it’s not described, the performance degradation observed in this case would almost certainly be poor latency and poor throughput.

Traffic 75

Traffic Latency Programming Scalability 75

The Morning Paper

DECEMBER 10, 2019

…software operating on persistent data structures requires "global" pointers that remain valid after a process terminates, while hardware requires that a diverse set of devices all have the same mappings they need for bulk transfers to and from memory, and that they be able to do so for a potentially heterogeneous memory system. ."

Hardware 52

Hardware Virtualization Operating System Programming 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. It was a great privilege. That's about 24 hours from now!

Performance 52

Performance Latency Cache Virtualization 52

ScaleOut Software

JULY 14, 2021

The Microsoft Azure IoT ecosystem offers a rich set of capabilities for processing IoT telemetry, from its arrival in the cloud through its storage in databases and data lakes. Acting as a switchboard for incoming and outgoing messages, Azure IoT Hub forms the core of these capabilities.

IoT 52

IoT Azure Analytics Serverless 52

The Morning Paper

NOVEMBER 17, 2019

For example, to reduce latency, serverless platforms try to reuse the same function instance to process multiple requests. There is no notion of function affinity, so requests from the same source may be processed by different function instances too. a persistent store with transaction support). Lambda operational semantics.

Serverless 58

Serverless Lambda Programming Cache 58

All Things Distributed

SEPTEMBER 25, 2017

This Region will consist of three Availability Zones at launch, and it will provide even lower latency to users across the Middle East. In the education sector we have been supporting the development of technology and cloud skills amongst tertiary institutes in the Middle East through the AWS Educate program.

Cloud 152

Cloud Education Energy Government 152

ScaleOut Software

AUGUST 18, 2018

In previous blogs , we have explored the power of the digital twin model for stateful stream-processing. This minimizes event-handling latency and enables better management of local operations, while still providing strategic analysis and control by remote (cloud-based or on-premises) IoT applications.

IoT 45

IoT Ecommerce Analytics Latency 45

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 Morning Paper

JULY 7, 2019

Previously on The Morning Paper we’ve looked at the spread of machine learning through Facebook and Google and some of the lessons learned together with processes and tools to address the challenges arising. A general process. The generic machine learning process looks like this: ( Enlarge ). ICSE’19.

Software Engineering 92

Software Engineering Engineering Software Software 92