Dynatrace

DECEMBER 13, 2023

User demographics , such as app version, operating system, location, and device type, can help tailor an app to better meet users’ needs and preferences. This can be achieved by reducing the size of files or images, using caching, and compressing data. Load time and network latency metrics. Optimize images and videos.

Best Practices 246

Best Practices Mobile Metrics Performance 246

Scalegrid

FEBRUARY 8, 2024

A distributed storage system is foundational in today’s data-driven landscape, ensuring data spread over multiple servers is reliable, accessible, and manageable. This guide delves into how these systems work, the challenges they solve, and their essential role in businesses and technology.

Storage 130

Storage Systems Big Data Azure 130

Dynatrace

DECEMBER 15, 2020

Upcoming Operating systems support changes. The following operating systems will no longer be supported starting 01 February 2021. The following operating systems will no longer be supported starting 01 May 2021. The following operating systems will no longer be supported starting 01 June 2021.

Operating System 165

Operating System Java Mobile Cache 165

Scalegrid

MAY 11, 2024

It uses a filesystem cache and write-ahead log for crash recovery. Compaction operation defragments data files & indexes. However, keep in ming that it does not release space to the operating system. MongoDB makes use of both the filesystem cache and the WiredTiger internal cache.

Storage 130

Storage Engineering Cache Database 130

DZone

FEBRUARY 21, 2021

CPU consumption in Unix/Linux operating systems are studied using 8 different metrics: User CPU time , System CPU time , nice CPU time , Idle CPU time , Waiting CPU time , Hardware Interrupt CPU time , Software Interrupt CPU time , and Stolen CPU time. In this article, let's study ‘nice CPU time’. What Is ‘nice’ CPU Time?

Operating System 133

Operating System Hardware Metrics Systems 133

Scalegrid

JANUARY 25, 2024

Effective management of memory stores with policies like LRU/LFU proactive monitoring of the replication process and advanced metrics such as cache hit ratio and persistence indicators are crucial for ensuring data integrity and optimizing Redis’s performance. Cache Hit Ratio The cache hit ratio represents the efficiency of cache usage.

Metrics 130

Metrics Monitoring Latency Cache 130

Percona

APRIL 24, 2023

The urge to create more and more indexes is found to be causing severe damage in many systems. Many times, removing indexes is what we should be doing first before considering any new indexes for the benefit of the entire system. This post is about PostgreSQL, but most of the problems also apply to other database systems.

Tuning 139

Tuning Cache Storage Database 139

Percona

MARCH 23, 2023

By caching hot datasets, indexes, and ongoing changes, InnoDB can provide faster response times and utilize disk IO in a much more optimal way. Operating system Linux is the most common operating system for high-performance MySQL servers. A recommended value is two times the number of CPUs plus the number of disks.

Performance 144

Performance Hardware Tuning Storage 144

Scalegrid

JANUARY 21, 2025

With these essential support systems in place, you can effectively monitor your databases with up-to-date data about their health and functioning status at all times. To monitor Redis instances effectively, collect Redis metrics focusing on cache hit ratio, memory allocated, and latency threshold.

Strategy 130

Strategy Monitoring Latency DevOps 130

ACM Sigarch

APRIL 2, 2025

While implementing such an instruction set in commercial CPUs could take timedue to the need for modifications to libraries, operating systems, and various software stacksthe situation is quite different for GPUs. His work addresses diverse aspects of computer architecture and system software.

Efficiency 54

Efficiency Hardware Architecture Design 54

Scalegrid

DECEMBER 21, 2023

With these essential support systems in place, you can effectively monitor your databases with up-to-date data about their health and functioning status at all times. To monitor Redis® instances effectively, collect Redis metrics focusing on cache hit ratio, memory allocated, and latency threshold.

Strategy 130

Strategy Monitoring Latency DevOps 130

The Morning Paper

MAY 23, 2019

Compress objects, not cache lines: an object-based compressed memory hierarchy Tsai & Sanchez, ASPLOS’19. Existing cache and main memory compression techniques compress data in small fixed-size blocks, typically cache lines. ” The big idea. What about arrays? We want Zippads to compress both well.

Cache 61

Cache Benchmarking Hardware Java 61

Smashing Magazine

JUNE 20, 2019

Without Google Fonts you would be limited to the handful of “ system fonts ” installed on your user’s device. System fonts or ‘Web Safe Fonts’ are the fonts most commonly pre-installed across operating systems. Browser Caching. Another built-in optimization of Google Fonts is browser caching.

Google 111

Google Performance Cache Website 111

Smashing Magazine

MAY 25, 2021

If you want to use web fonts your choices are basically Flash of Invisible Text (aka FOIT) where the text is hidden until the font downloads or Flash of Unstyled Text (FOUT) where you use the fallback system font initially and then upgrade it to the web font when it downloads. Making Your Fallback Font More Closely Match Your Font.

Operating System 145

Operating System Google Website Cache 145

John McCalpin

APRIL 25, 2023

For most high-end processors these values have remained in the range of 75% to 85% of the peak DRAM bandwidth of the system over the past 15-20 years — an amazing accomplishment given the increase in core count (with its associated cache coherence issues), number of DRAM channels, and ever-increasing pipelining of the DRAMs themselves.

Benchmarking 97

Benchmarking Cache Latency Tuning 97

ScaleOut Software

MAY 15, 2014

Given all this, we thought it would be a good opportunity to see how we are doing relative to the competition, and in particular, relative to Microsoft’s AppFabric caching for Windows on-premise servers. One or more specified cache servers are unavailable, which could be caused by busy network or servers. …). Please retry later.

Cache 40

Cache Servers Network Design 40

Smashing Magazine

JUNE 2, 2021

The project consisted of upgrading the shop software to our own open-source system and redoing the shop’s front end from scratch. And while you can usually cache the full page of an article, the same is not true of many shop pages and elements. On design systems, CSS/JS and smart interface design patterns.

Performance 132

Performance Cache Website Mobile 132

Percona

AUGUST 31, 2018

If queries perform full table scans where an index could be used or perform heavy joins or expensive aggregate operations, then the system can still perform poorly even if the database parameters are tuned. The PostgreSQL buffer is called shared_buffer which is the most effective tunable parameter for most operating systems.

Tuning 79

Tuning Database Performance Benchmarking 79

The Morning Paper

MAY 12, 2019

An open-source benchmark suite for microservices and their hardware-software implications for cloud & edge systems Gan et al., Systems built with lots of microservices have different operational characteristics to those built from a small number of monoliths, we’d like to study and better understand those differences.

Open Source 61

Open Source Hardware Benchmarking Systems 61

SQL Performance

MARCH 30, 2021

A parallel query might start out requesting DOP 8, but be progressively downgraded to DOP 4, DOP 2, and finally DOP 1 due to a lack of system resources at that moment. Running a parallel plan on a single thread can also happen when a cached parallel plan is reused by a session that is limited to DOP 1 by an environmental setting (e.g.

Cache 98

Cache Servers Processing Operating System 98

Percona

NOVEMBER 7, 2023

This book has five major sections on MVCC and Isolation (108 pages), Buffer Cache and WAL (53 pages), Locks (42 pages), Query Execution (154 pages), and the types of indexes (127 pages). Now, this operation blocks all reads and writes during the operation.

Cache 114

Cache Servers Database Operating System 114

All Things Distributed

SEPTEMBER 21, 2012

Werner Vogels weblog on building scalable and robust distributed systems. Of the work that is already public the systems that Uplynk has built for Disney/ABC are impressive. Leases: An Efficient Fault-Tolerant Mechanism for Distributed File Cache Consistency , Cary G. All Things Distributed. Comments (). Gray and David R.

AWS 66

AWS Media Cache Operating System 66

Randon ASCII

SEPTEMBER 8, 2019

The fact that this shows up as CPU time suggests that the reads were all hitting in the system cache and the CPU time was the kernel overhead (note ntoskrnl.exe on the first sampled call stack) of grabbing data from the cache. Remember that these are calls to the operating system – kernel calls.

Latency 79

Latency Cache Programming Operating System 79

Official Blog - World Web Technology

AUGUST 27, 2023

Regarding CMS, PHP can be integrated with other content management systems, such as WordPress, to build robust ecommerce websites. Various techniques, such as caching and optimization, improve the website’s performance and speed. Furthermore, opcode caching allows developers to speed up PHP code execution.

Development 98

Development Ecommerce Open Source Website 98

All Things Distributed

OCTOBER 2, 2017

About 20 percent would return a set of rows, but still operate on only a single table. The success of our early results with the Dynamo database encouraged us to write Amazon's Dynamo whitepaper and share it at the 2007 ACM Symposium on Operating Systems Principles (SOSP conference), so that others in the industry could benefit.

Internet 111

Internet Internet AWS Performance 111

ACM Sigarch

NOVEMBER 1, 2019

This blog post gives a glimpse of the computer systems research papers presented at the USENIX Annual Technical Conference (ATC) 2019, with an emphasis on systems that use new hardware architectures. USENIX ATC is a top-tier venue with a broad range of systems research papers from both industry and academia.

Architecture 12

Architecture Hardware Cache Storage 12

SQL Server According to Bob

NOVEMBER 8, 2016

Note: We received feedback that there was some confusion on us calling this functionality “tail of the log caching” because our documentation and prior history has referred to the tail of the log as the portion of the hardened log that has not been backed up. Tail Of Log Caching.

Cache 40

Cache Servers Media Storage 40

SQL Server According to Bob

MAY 19, 2019

Partitioning allows SQL Server to scale to the largest systems with record-setting performance. When promoted to a super-latch on a 64 CPU system the memory requirement becomes 32 + (32 *64) = 2080 bytes. However, on smaller systems and VMs the partitioning may not be required to maintain performance. IO Request Caches.

IoT 61

IoT Servers Development Cache 61

MachMetrics

DECEMBER 14, 2019

It is typically reduced via server-side optimizations, such as enabling caching and database indexes. TTFB measures the time that elapses between when a user requests a site, and when that user’s browser receives the first bit of information. In the analysis, the average TTFB speed was found to be 1.28 seconds on desktop and 2.59

Best Practices 105

Best Practices Speed Mobile Google 105

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

The Morning Paper

NOVEMBER 19, 2019

On the other hand we have good old-fashioned native apps that you install on your operating system (a dying breed? With a traditional OS app 2 you have much more control over the data (the files on your file system at least, which if you’re lucky might even be in an open format). Google Docs, Trello, …). It should be fast.

Cloud 83

Cloud Software Software Internet 83

HammerDB

APRIL 19, 2023

Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. This allows us to know our operating environment and its capability. Operating System: Ubuntu 22.04 Operating System: Ubuntu 22.04 Database: MySQL 8.0.31 4.22 %usr 38.40

Performance 55

Performance Benchmarking Cache Storage 55

HammerDB

JUNE 27, 2022

HammerDB has graphical and command line interfaces for the Windows and Linux operating systems. An important concept was to simulate database users called Virtual Users in parallel (rather than concurrently) to accurately simulate a real database workload with multiple users running from separate systems. HammerDB Licensing.

Benchmarking 63

Benchmarking Open Source C++ Cache 63

The Morning Paper

DECEMBER 8, 2019

At the start of November I was privileged to attend HPTS (the High Performance Transaction Systems) conference in Asilomar. Byte-addressable non-volatile memory,) NVM will fundamentally change the way hardware interacts, the way operating systems are designed, and the way applications operate on data. PLOS’19.

Hardware 56

Hardware Programming Media Storage 56

Percona

MAY 1, 2023

It is primarily the responsibility of the database administrator or developer to tune PostgreSQL according to their system’s workload. Connection pooling: Minimizing connection overhead and improving response times for frequently accessed data by implementing mechanisms for connection pooling and caching strategies.

Tuning 52

Tuning Database Efficiency Performance 52

John McCalpin

APRIL 2, 2020

The presentation discusses a family of simple performance models that I developed over the last 20 years — originally in support of processor and system design at SGI (1996-1999), IBM (1999-2005), and AMD (2006-2008), but more recently in support of system procurements at The Texas Advanced Computing Center (TACC) (2009-present).

Benchmarking 59

Benchmarking Performance Latency Architecture 59

The Morning Paper

APRIL 14, 2019

Just as today’s systems offer memory protection, they call this time protection. Microarchitectural state of interest includes data and instruction caches, TLBs, branch predictors, instruction- and data-prefetcher state machines, and DRAM row buffers. set out a principled basis for protecting against this class of attacks.

Hardware 44

Hardware Cache Latency Speed 44