All Things Distributed

OCTOBER 8, 2014

We are introducing native support for document model like JSON into DynamoDB, the ability to add / remove global secondary indexes, adding more flexible scaling options, and increasing the item size limit to 400KB. NoSQL and Flexibility: Document Model. JSON-style document model enables customers to build services that are schema-less.

Availability 144

Availability Performance Scalability AWS 144

O'Reilly

SEPTEMBER 19, 2023

” Each step has been a twist on “what if we could write code to interact with a tamper-resistant ledger in real-time?” Doubly so as hardware improved, eating away at the lower end of Hadoop-worthy work. Mental contortions led to code contortions led to frustration. And, often, to giving up.

Hardware 101

Hardware Storage Big Data Blockchain 101

Percona

AUGUST 27, 2018

MySQL 8 introduced a feature that is explained only in a single documentation page. assigning to a specific CPU) is a manageable resource, represented by the concept of “virtual CPU” as a term that includes CPU cores, hyperthreads, hardware threads, and so forth. Then we need to see IF implementing the tuning will work or not.

Tuning 44

Tuning Virtualization Testing Servers 44

Adrian Cockcroft

NOVEMBER 13, 2023

In the simplest case, you have a growing workload, and you optimize it to run more efficiently so that you don’t need to buy or rent additional hardware, so your carbon footprint stays the same, but the carbon per transaction or operation is going down. I’ve written before about how to tune out retry storms.

Energy 52

Energy Cloud Traffic Transportation 52

Brendan Gregg

SEPTEMBER 5, 2017

It uses a Solaris Porting Layer (SPL) to provide a Solaris-kernel interface on Linux, so that unmodified ZFS code can execute. There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). LTS (April 2016).

Virtualization 76

Virtualization AWS Engineering Hardware 76

Dotcom-Montior

OCTOBER 12, 2017

Used this documentation for the setup: [link]. Detailed documentation: [link]. Edit the load testing script and add the following code section after tab0 variable initialized: Tab.SetRequestHeader(“loadtest”,”x-dynatrace”); Execute the EveryStep Script load test script several times (single user). Verify hardware sizing.

AWS 40

AWS Tuning Monitoring Servers 40

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information contained in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. Microsoft may have patents, patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document.

Servers 40

Servers Cache Media Hardware 40

John McCalpin

JANUARY 22, 2018

Introduction: In December 2017, my colleague Damon McDougall (now at AMD) asked for help in porting the fused multiply-add example code from a Colfax report ( [link] ) to the Xeon Phi x200 (Knights Landing) processors here at TACC. of the “adjusted peak performance”, there is no longer a significant upside to performance tuning.

Latency 40

Latency Hardware Code Testing 40

HammerDB

FEBRUARY 25, 2021

This is possible because the Tcl interpreter is exceptionally compact and lightweight (Also for this reason Tcl is often used as an embedded language in hardware such as Cisco Routers). Running a performance profiling tool such as perf in Linux we can see that the top event is TEBCresume standing for Tcl Execute Byte Code.

Programming 67

Programming Benchmarking Virtualization C++ 67

SQL Performance

MARCH 8, 2021

This can make it difficult to draw sound performance-tuning conclusions. This uses hardware, typically a crystal oscillator, that produces ticks at a very high constant rate regardless of processor speed, power settings, or anything of that nature. SQL Server uses the high-precision QueryPerformanceCounter API to capture timing data.

Servers 95

Servers Tuning Architecture Performance 95

SQL Server According to Bob

JANUARY 11, 2020

Copyright The information ​​ that is contained ​​ in this document represents the current view of Microsoft Corporation on the issues discussed as of the date of publication. After reading ​​ this document you will better understand SQL Server I/O needs and capabilities.

Servers 40

Servers Cache Database Media 40

Smashing Magazine

AUGUST 22, 2021

As such, tuning congestion logic is usually only done by a select few developers, and evolution is slow. Some options for doing this are described in the IETF’s proposed document. Many network interface controllers (NICs) even have built-in hardware-offload features for TCP. What does it all mean?

Performance 107

Performance Network Latency Servers 107

High Scalability

NOVEMBER 25, 2019

Document store. Java used to power core file system code. Python used to power client-side code, certain microservices, migration scripts, internal scripts. We use event-based sync in our desktop sync client code, as server events are happening they get pushed to the client from server and the client replays them locally.

Architecture 52

Architecture Cache Azure Storage 52