Percona

DECEMBER 11, 2023

DLVs are particularly advantageous for databases with large allocated storage, high I/O per second (IOPS) requirements, or latency-sensitive workloads. The DLV, of course, affects the WRITE operations the most, and hence, the write-only test should be given the most consideration for the comparison of the DLV configuration vs. standard RDS.

AWS 93

AWS Benchmarking Performance Traffic 93

Percona

MARCH 29, 2023

Snappy Data size: 14.95GB Data size after compression: 10.75GB Avg latency: 12.22ms Avg cpu usage: 34% Avg insert ops rate: 16K/s Time taken to import 120000000 document: 7292 seconds Zstd (with default compression level 6) Data size: 14.95GB Data size after compression: 7.69GB Avg latency: 12.52ms Avg cpu usage: 31.72% Avg insert ops rate: 14.8K/s

Storage 105

Storage Network Open Source Latency 105

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Software-based clocksources could fix those issues and provide accurate monotonically-increasing time.

Speed 126

Speed Java AWS Virtualization 126

Particular Software

SEPTEMBER 20, 2021

Some will claim that any type of RPC communication ends up being faster (meaning it has lower latency) than any equivalent invocation using asynchronous messaging. It’s less of an apples-to-oranges comparison and more like apples-to-orange-sherbet. There are more steps, so the increased latency is easily explained.

Benchmarking 97

Benchmarking Latency Servers Systems 97

The Morning Paper

NOVEMBER 15, 2020

This makes the whole system latency sensitive. So we need low latency, but we also need very high throughput: A recurring theme in IDS/IPS literature is the gap between the workloads they need to handle and the capabilities of existing hardware/software implementations. uses Intel’s Hyperscan library for MSPM.

Servers 128

Servers Hardware Latency Design 128

The Netflix TechBlog

MARCH 13, 2020

Compared to the most recent master version of libaom (AV1 reference software), SVT-AV1 is similar in compression efficiency and at the same time achieves significantly lower encoding latency on multi-core platforms when using its inherent parallelization capabilities.

Open Source 154

Open Source Efficiency C++ Speed 154

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. Statistics reveal that a 1% improvement in latency can lead to a 3% increase in viewer engagement, highlighting its significance in live content delivery.3.

Architecture 52

Architecture Performance Internet Internet 52

IO River

NOVEMBER 2, 2023

This type of traffic originates directly from the server, making it more challenging to handle due to latency and server load considerations; it’s hard but not impossible. This is mainly because video files are notably bulkier than a simple text-based API request, which, in comparison, would be more like a droplet than an entire river.

Architecture 52

Architecture Performance Internet Internet 52

Alex Russell

MAY 9, 2022

This is a complex topic, but to borrow from a recent post , web performance expands access to information and services by reducing latency and variance across interactions in a session, with a particular focus on the tail of the distribution (P75+). Consistent performance matters just as much as low average latency.

Performance 86

Performance Latency Metrics Engineering 86

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. A quick check of basic performance statistics showed over 30% higher CPU consumption. us on Ubuntu.

Speed 52

Speed Java AWS Virtualization 52

Dynatrace

JANUARY 15, 2020

Dynatrace is naturally suited to address these requirements with its automatic and AI-powered full-stack software intelligence platform. Dynatrace software intelligence helps you manage Citrix environments and real user experience more effectively. Comparison of these metrics between VDAs characterizes load balancing efficiency.

Latency 36

Latency Performance Virtualization Infrastructure 36

Brendan Gregg

AUGUST 8, 2017

I generated this using my offcputime tool from [bcc] (this tool needs eBPF features from Linux 4.8+), and my [flame graph] software: #./bcc/tools/offcputime.py Some people have found values that seem to work for their systems and workloads: they know that when load goes over X, application latency is high and customers start complaining.

Latency 111

Latency Metrics C++ Systems 111

The Morning Paper

AUGUST 29, 2019

For cost calculations, the costs are a combination of compute costs, storage costs, data scan costs, and software license costs. The experimental results focus on six main areas of comparison: query restrictions system initialisation time query performance cost data compatibility with other systems scalability. Key findings.

Architecture 76

Architecture Cloud Storage Serverless 76

The Morning Paper

DECEMBER 8, 2019

Therefore any programming abstraction must be low latency and the kernel needs to be kept off the path of persistent data access as much as possible. The paper concludes with a quick comparison of a KVS written using a modified FreeBSD kernel in the Twizzler-proposed model, and a traditional Unix implementation using files.

Hardware 56

Hardware Programming Media Storage 56

Brendan Gregg

OCTOBER 8, 2018

eBPF was created by Alexei Starovoitov while at PLUMgrid (he's now at Facebook) as a generic in-kernel virtual machine, with software defined networks as the primary use case. See the [reference guide] for more details. ## Script Comparison I could pick scripts that minimize or maximize the differences, but either would be misleading.

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. As a Xen guest, this profile was gathered using perf(1) and the kernel's software cpu-clock soft interrupts, not the hardware NMI. Software-based clocksources could fix those issues and provide accurate monotonically-increasing time.

Speed 40

Speed Java AWS Virtualization 40

Smashing Magazine

MAY 16, 2022

All of the web performance monitoring software we work with provide RUM clients that put additional layers of monkey patching on the page to maintain direct access to a request being made or the response coming back. We can also lean into what we’ve learned with Server-Timing to set a timestamp on the header for comparison.

Servers 92

Servers Monitoring Cache Network 92

HammerDB

OCTOBER 23, 2023

Stored Procedures and Client SQL comparison To test the stored procedures and client implementations, we ran both workloads against a system equipped with Intel Xeon 8280L. When we observe the global CPU usage one clear difference is the increase in softirqs or software interrupts.(If On MySQL, we saw a 1.5X performance advantage.

Benchmarking 62

Benchmarking Database Network C++ 62

John McCalpin

JANUARY 22, 2018

Each of the two vector units can issue one FMA instruction per cycle, assuming that there are enough independent accumulators to tolerate the 6-cycle dependent-operation latency. This is an uninspiring fraction of peak performance that would normally suggest significant inefficiencies in either the hardware or software. 2 24 3 27 13.5

Latency 40

Latency Hardware Code Testing 40

ScaleOut Software

MAY 15, 2014

We have spent a great deal of time at ScaleOut Software re-architecting our in-memory data grid (IMDG)’s code base to make best use of many cores and large memory. Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Testing Scale-Up Performance.

Cache 40

Cache Servers Network Design 40

Brendan Gregg

OCTOBER 7, 2018

eBPF was created by Alexei Starovoitov while at PLUMgrid (he's now at Facebook) as a generic in-kernel virtual machine, with software defined networks as the primary use case. See the [reference guide] for more details. ## Script Comparison I could pick scripts that minimize or maximize the differences, but either would be misleading.

C++ 40

C++ Virtualization Programming Latency 40

Alex Russell

APRIL 29, 2021

For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. Provides safe access to USB devices from the web, enabling new classes of applications in the browser from education to software development and debugging. Offscreen Canvas. TextEncoderStream & TextDecoderStream.

Media 145

Media Games Education Engineering 145

Percona

MAY 2, 2023

Also, we will take a look at our open-source backup utility custom-built to help avoid costs and proprietary software – Percona Backup for MongoDB or PBM. We will be discussing these two backup options, how to proceed with them, and which one suits better depending on requirements and environment setup.

Best Practices 52

Best Practices Database Storage Servers 52

Smashing Magazine

JANUARY 11, 2021

Alternatively, you can also use: Addy Osmani’s Chrome UX Report Compare Tool , Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms.

Performance 145

Performance Cache Media Metrics 145

HammerDB

OCTOBER 12, 2018

Finally it is also important to note that this comparison is focused around OLTP based workloads, HammerDB also supports a TPC-H based workload for analytics with complex ad-hoc queries. CPUs which need to have their frequency coordinated by software: 0 . maximum transition latency: Cannot determine or is not supported. .

Best Practices 40

Best Practices Scalability Performance C++ 40

Brendan Gregg

SEPTEMBER 5, 2017

Here's some output from my zfsdist tool, in bcc/BPF, which measures ZFS latency as a histogram on Linux: # zfsdist. Tracing ZFS operation latency. They use third-party software like Docker or Kubernetes to simplify their administration. There have been security vulnerabilities, just like there are with any software.

Virtualization 76

Virtualization AWS Engineering Hardware 76

The Agile Manager

DECEMBER 17, 2008

Traditionally in IT, our gatekeepers are typically several different waves of requirements and specification documents, then software, then test results, then a production event. But of bigger concern is the latency between the time when requirements are captured and the time they're available as working code in an environment.

Latency 40

Latency Code Metrics Testing 40

Smashing Magazine

JANUARY 7, 2019

To get a good first impression of how your competitors perform, you can use Chrome UX Report ( CrUX , a ready-made RUM data set, video introduction by Ilya Grigorik), Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Are videos properly optimized?

Performance 103

Performance Cache Metrics Network 103

Alex Russell

JULY 14, 2021

Platform owners know the cost of re-developing apps for each OS means when independent software vendors invest heavily in their proprietary systems, it becomes less likely that those developers can deliver quality experiences on their competitor's system. Exclusives create friction for users considering a switch to a different OS.

Google 121

Google Mobile Engineering Internet 121

Smashing Magazine

JANUARY 6, 2020

Alternatively, you can also use Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Paddy Ganti’s script constructs two URLs (one normal and one blocking the ads), prompts the generation of a video comparison via WebPageTest and reports a delta.

Performance 145

Performance Cache Network Metrics 145

SQL Server According to Bob

JANUARY 11, 2020

The caching of data pages and grouping of log records helps remove much, if not all, of the command latency associated with a write operation. Action Description Manual Checkpoint – Target Specified I/O latency target set to ​​ the default ​​ of ​​ 20ms.

Servers 40

Servers Cache Database Media 40

Smashing Magazine

AUGUST 22, 2021

Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Latency can be roughly defined as the time it takes to send a packet from point A (say, the client) to point B (the server). Two-way latency is often called round-trip time (RTT).

Performance 105

Performance Network Latency Servers 105

Smashing Magazine

SEPTEMBER 29, 2021

Specific use cases may require image formats that support other features like: Software support: An image format may perform very well but is useless if browsers, CDN’s and other image manipulation tools do not recognize it. See the Pen [Image format comparison 2]([link] by Addy Osmani. Large preview ). The Old Guards: JPEG And PNG.

Open Source 144

Open Source Speed Website Google 144

Smashing Magazine

SEPTEMBER 6, 2021

Finally, not inlining resources has an added latency cost because the file needs to be requested. As such, many firewall vendors currently recommend blocking QUIC until they can update their software. In our own early tests , I found seriously diminishing returns at about 40 files.

Network 104

Network Servers Cache Traffic 104