Dynatrace

OCTOBER 15, 2021

This information is gathered from remote, often inaccessible points within your ecosystem and processed by some sort of tool or equipment. Traces are the act of following a process (for example, an API request or other system activity) from start to finish, showing how services connect. Monitoring begins here.

Open Source 221

Open Source Metrics Cloud Transportation 221

SQL Performance

MARCH 29, 2022

Simple parameterization has a number of quirks in this area, which can result in more parameterized plans being cached than expected, or finding different results compared with the unparameterized version. For the time being, let’s look at some examples using the Stack Overflow 2010 database on SQL Server 2019 CU 14. DisplayName.

Cache 90

Cache Servers Database Testing 90

KeyCDN

MAY 14, 2019

We’re thrilled to announce that we’ve added the Image Processing feature! How Does Image Processing Work? The Image Processing feature is available on all Pull Zones. Enabling the Origin Shield setting is required because all image processing will occur at our shield locations. For example, the query string ?width=600&quality=70

Processing 13

Processing Cache Latency Network 13

Brendan Gregg

FEBRUARY 28, 2023

Make sure your system can handle next-generation DRAM,” [link] , Nov 2011 [Hruska 12] Joel Hruska, “The future of CPU scaling: Exploring options on the cutting edge,” [link] , Feb 2012 [Gregg 13] Brendan Gregg, “Blazing Performance with Flame Graphs,” [link] , 2013 [Shimpi 13] Anand Lal Shimpi, “Seagate to Ship 5TB HDD in 2014 using Shingled Magnetic (..)

Performance 52

Performance Latency Cache Virtualization 52

CSS Wizardry

MARCH 3, 2019

To this end, having a solid caching strategy can make all the difference for your visitors. ?? How is your knowledge of caching and Cache-Control headers? — Harry Roberts (@csswizardry) 3 March, 2019. Cache-Control. The amount of control we’re granted makes for very intricate and powerful caching strategies.

Cache 264

Cache Latency Strategy Servers 264

Brendan Gregg

AUGUST 29, 2021

Problem Statement The microservice managed and processed large files, including encrypting them and then storing them on S3. Reads usually have apps waiting on them; writes may not (write-back caching). This is a 64-Gbyte memory system, and 48 Gbytes is in the page cache (the file system cache). This is "cache busting."

Cache 40

Cache C++ AWS Systems 40

ACM Sigarch

NOVEMBER 4, 2019

Goodman, and “Speculative Cache Ways: On-Demand Cache Resource Allocation” published at MICRO 1999 by David H. Editor’s note: Sophia was one of the recipients of the Best Paper Award at MICRO 2019. Frederic Chong, Jangwoo Kim, David Wentzlaff, and Jishen Zhao were inducted into the MICRO Hall of Fame ( [link] ).

Hardware 18

Hardware Architecture Programming Innovation 18

The Morning Paper

OCTOBER 4, 2020

The study is based on one of the world’s first commercial 5G network deployments (launched in April 2019), a 0.5 Emerging architectures that shorten the path length, e.g. edge caching and computing, may also confine the latency. The bulk of this latency comes from on-device frame processing, not network transmission delay.

Energy 130

Energy Latency Performance Network 130

The Netflix TechBlog

OCTOBER 18, 2019

theme of the ML Platform meetup hosted at Netflix, Los Gatos on Sep 12, 2019. The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., He also talked about common pitfalls of stream-processed data like out of order processing.

Infrastructure 126

Infrastructure Metrics Architecture Efficiency 126

Smashing Magazine

APRIL 17, 2019

2019-04-17T12:30:16+02:00. 2019-04-29T18:34:58+00:00. A DNS lookup is the process of turning a human-friendly domain name like example.com into the machine-friendly IP address like 123.54.92.4 The browser caches the results of these lookups, but they can be slow. Optimizing Performance With Resource Hints. Drew McLellan.

Performance 106

Performance Games Servers Cache 106

The Netflix TechBlog

OCTOBER 18, 2019

theme of the ML Platform meetup hosted at Netflix, Los Gatos on Sep 12, 2019. The key insight was that by assuming a latent Gaussian Process (GP) prior on the key business metric actions like viral engagement, job applications, etc., He also talked about common pitfalls of stream-processed data like out of order processing.

Infrastructure 100

Infrastructure Metrics Architecture Efficiency 100

Smashing Magazine

JANUARY 15, 2019

2019-01-15T13:30:32+01:00. 2019-04-29T18:34:58+00:00. For the more adventurous/technical, the top (table of processes) command provides similar metrics on most Unix-like operating systems such as macOS and Ubuntu. A particular favorite in the WordPress space is WP Super Cache. Jack Lenox. In Conclusion.

Website Performance 73

Website Performance Website Energy Performance 73

KeyCDN

SEPTEMBER 12, 2019

Well, according to HTTP Archive , as of June 1, 2019 the average desktop page is 1,896.8 An easy way to compress images is with our image processing service that happens to also be fully integrated into our existing network. This is useful if you want to store optimized images instead of using a real-time image processing service.

Social Media 106

Social Media Media Google Website 106

Smashing Magazine

JUNE 30, 2021

First and foremost, this allows you to implement arbitrarily complex caching behavior, but it has also been extended to let you tap into long-running background fetches, push notifications, and other functionality that requires code to run without an associated page. Concurrency Model #2: Shared Memory. Case-Study: PROXX.

Games 145

Games Architecture Code C++ 145

The Morning Paper

APRIL 11, 2019

UPDATE 2019-04-14: An author update has been published for this paper which details that with current browser versions, ServiceWorkers can only stay alive for about a minute after the user navigates away from the site. Master of web puppets: abusing web browsers for persistent and stealthy computation Papadopoulus et al., NDSS’19.

Website 44

Website Network Traffic Cache 44

HammerDB

JUNE 27, 2022

The Transaction Processing Performance Council (TPC) was founded to bring standards to database benchmarking, and the history of the TPC can be found here. Given the increasing importance of open source and the widespread use of HammerDB, the TPC adopted HammerDB in 2019 and now hosts the project on GitHub. Cached vs Scaled Workloads.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

The Morning Paper

SEPTEMBER 19, 2019

We’ve been covering papers from VLDB 2019 for the last three weeks, and next week it will be time to mix things up again. I really do want to cover this one at some point, along with Implementation of cluster-wide logical clock and causal consistency in MongoDB from SIGMOD 2019. for machine generated emails sent to humans).

Blockchain 46

Blockchain Hardware Google Analytics 46

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Some of DBLog’s features are: Processes captured log events in-order.

Database 212

Database Traffic Transportation Open Source 212

The Netflix TechBlog

DECEMBER 17, 2019

Nonetheless, we found a number of limitations that could not satisfy our requirements e.g. stalling the processing of log events until a dump is complete, missing ability to trigger dumps on demand, or implementations that block write traffic by using table locks. Some of DBLog’s features are: Processes captured log events in-order.

Database 197

Database Traffic Transportation Open Source 197

SQL Performance

MAY 20, 2022

The Compilation Process. The most important things to understand about server-side parameterization are it doesn’t happen all at once and a final decision to parameterize isn’t made until the end of the process. It’s simply too early in the process. Let’s look at the plan cache: SELECT. usecounts , CP. objtype , ST. [

Cache 55

Cache Database Servers Testing 55

SQL Server According to Bob

DECEMBER 18, 2018

Device level flushing may have an impact on your I/O caching, read ahead or other behaviors of the storage system. FILE_FLAG_NO_BUFFERING is the Win32, CreateFile API flags and attributes setting to bypass file system cache. FILE_FLAG_NO_BUFFERING is the Win32, CreateFile API flags and attributes setting to bypass file system cache.

Servers 90

Servers Media Cache Storage 90

SQL Performance

APRIL 18, 2022

Let’s look at some examples using the Stack Overflow 2010 database on SQL Server 2019 CU 14, with database compatibility set to 150. It’s important to remember the plan must be cached. Requesting an estimated plan from SSMS does not cache the plan produced (since SQL Server 2012). Dynamic Management Objects. End of Part 3.

Cache 58

Cache Servers Database Testing 58

SQL Performance

MARCH 22, 2022

In this first part, after a quick introduction, I look at the effects of simple parameterization on the plan cache. Being explicit gives you complete control over all aspects of the parameterization process, including where parameters are used, the precise data types used, and when plans are reused. Simple Parameterization. Users AS U.

Cache 61

Cache Servers Database Code 61

Smashing Magazine

JULY 29, 2019

2019-07-29T14:00:59+02:00. 2019-07-29T13:06:57+00:00. The United Kingdom is ranked 34th out of 207 countries for broadband speed, but in July 2019 there was still a school in the UK without broadband. Let’s talk about caching. We’re going to check out Cache-Control. I Used The Web For A Day On A 50 MB Budget.

Cache 96

Cache Google Mobile Network 96

SQL Performance

MARCH 30, 2021

) ; My test environment is SQL Server 2019 CU9 on a laptop with 8 cores and 16GB of memory allocated to the instance. 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. It can be downloaded at the same link.

Cache 98

Cache Servers Operating System Processing 98

Smashing Magazine

JUNE 20, 2019

2019-06-20T11:00:16+02:00. 2019-06-20T10:35:07+00:00. Browser Caching. Another built-in optimization of Google Fonts is browser caching. As the Google Fonts API becomes more widely used, it is likely visitors to your site or page will already have any Google fonts used in your design in their browser cache.

Google 111

Google Performance Cache Website 111

Rigor

SEPTEMBER 3, 2019

(They seem to have learned from their mistakes for Prime Day 2019.). And Nordstrom dealt with crashes and other issues at the beginning of its popular anniversary sale in 2019. Prior to any peak event, take the time to review your CDN’s cache design and offload metrics to determine what improvements can be made.

Website 74

Website Cache Ecommerce Traffic 74

SQL Performance

JUNE 8, 2022

Let’s now continue following the compilation process noting the effects on simple parameterization as we go. As in previous parts, code examples use the Stack Overflow 2010 database on SQL Server 2019 CU 16 with the following additional nonclustered index: CREATE INDEX [ IX dbo. Let’s look at the plan cache: SELECT.

Cache 54

Cache Servers Database Processing 54

SQL Server According to Bob

MAY 19, 2019

Ghost record cleanup can occur inline with the query execution or be queued to a background task for processing. The lock manager has partitions, lock block cache and other structures. Reduce the number of partitions and size of the cache. SQL Server can elect to use a parallel query to process the request. Lock Manager.

IoT 61

IoT Servers Development Cache 61

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Advances in browser content processing. The worldwide ASP 18 months ago was ~$300USD , so the average performance in the deployed fleet can be represented by a $300 device from mid-2019.

Performance 124

Performance Network Cache Metrics 124

Smashing Magazine

OCTOBER 29, 2019

2019-10-29T12:30:59+02:00. 2019-10-29T13:36:09+00:00. As of writing this in 2019, Can I use… has accounted for the following platforms that support WebP: ‘Can I Use’ breaks down which browsers and versions of those browsers provide support for WebP. What Is WebP Caching? And WebP caching is only going to make it better.

Website 72

Website Speed Cache Google 72

Smashing Magazine

OCTOBER 26, 2018

2019-04-29T18:34:58+00:00. Recommended reading : WordPress Security As A Process. For that reason, we utilized two WordPress features that can help you out when serving simple JSON data out: Transients API for caching, Loading the minimum necessary WordPress using SHORTINIT constant. Denis Žoljom. 2018-10-26T13:45:46+02:00.

Cache 78

Cache Website Speed Database 78

Smashing Magazine

APRIL 9, 2019

2019-04-09T12:30:59+02:00. 2019-04-29T18:34:58+00:00. They’d take the hit for the first site to use the file, but then it would sit in their local browser cache and downloads could be skipped for each subsequent site. Understanding Subresource Integrity. Understanding Subresource Integrity. Drew McLellan.

Website 57

Website Servers Code Best Practices 57

SQL Performance

AUGUST 4, 2022

To recap: Normalization and decoding promote cached plan reuse. Let’s now continue following the compilation process to see how SQL Server decides if simple parameterization is safe or unsafe. Process Summary. [ This series: Part 1 | Part 2 | Part 3 | Part 4 | Part 5 | Part 6 ].

Servers 61

Servers Cache Database Availability 61

SQL Performance

MARCH 8, 2021

They are run on SQL Server 2019 CU9 , on a laptop with 8 cores, and 16GB of memory allocated to the SQL Server 2019 instance. Total elapsed time is 933ms with 6,673ms of CPU time with a warm cache. This operator consumes no CPU time, and only processes 524 rows. Compatibility level 150 is used exclusively. TheYear , CA.

Servers 95

Servers Tuning Architecture Processing 95

SQL Performance

NOVEMBER 30, 2021

Index_A has 200,000 pages at its leaf level, and Index_B has 1 million pages at its leaf level, so a complete scan of Index_B requires processing five times more pages. I created this contrived example on a laptop running SQL Server 2019 with 8 processor cores, 32GB of memory, and solid-state disks. ) ; GO.

Efficiency 54

Efficiency Servers Database Cache 54

The Morning Paper

DECEMBER 10, 2019

HotStorage 2019. Applications running on BNVM (byte-addressable non-volatile memory) must have a way to create pointers that outlast a process’s virtual address space and are valid in other address spaces. At 0.4ns, we’re in the same ballpark as regular L1 cache reference latency. The last word.

Hardware 52

Hardware Virtualization Operating System Programming 52