Percona

DECEMBER 26, 2023

Although the default configuration simulates loading based loosely upon TPC-B, it is nevertheless easy to test other use cases by writing one’s own transaction script files. A script executing a benchmarking run: #!/bin/bash tps, lat 11.718 ms stddev 3.951 progress: 4440.0 tps, lat 11.075 ms stddev 3.519 progress: 4445.0

Benchmarking 120

Benchmarking Metrics C++ Database 120

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. If you did such a benchmark, here’s an incomplete picture you might end up with: Graph of microbenchmark showing RPC is faster than messaging. Messaging doesn’t do that.

Benchmarking 97

Benchmarking Latency Servers Systems 97

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

Percona

MARCH 20, 2023

When designing an architecture, many components need to be considered before deciding on the best solution. micro) The tests We will have very simple test cases. The second test will define how well the increasing load is served inside the previously identified range. That allows it to go a bit further.

Games 119

Games Latency Traffic Cache 119

The Netflix TechBlog

OCTOBER 19, 2020

Now let’s look at how we designed the tracing infrastructure that powers Edgar. If we had an ID for each streaming session then distributed tracing could easily reconstruct session failure by providing service topology, retry and error tags, and latency measurements for all service calls. What’s next?

Infrastructure 233

Infrastructure Transportation Storage Open Source 233

Percona

JANUARY 24, 2023

This will be clearly visible in PostgreSQL performance benchmarks as a “ Sawtooth wave ” pattern observed by Vadim in his tests: As we can see, the throughput suddenly drops after every checkpoint due to heavy WAL writing and gradually picks up until the next checkpoint. I couldn’t see any adverse effect on the TPS on quick tests.

Database 115

Database Benchmarking Open Source Latency 115

The Morning Paper

AUGUST 29, 2019

use the TPC-H benchmark to assess Redshift, Redshift Spectrum, Athena, Presto, Hive, and Vertica to find out what works best and the trade-offs involved. As it is infeasible to test every OLAP system runnable on AWS, we chose widely-used systems that represented a variety of architectures and cost models. The design space.

Architecture 76

Architecture Cloud Storage Serverless 76

HammerDB

DECEMBER 5, 2020

The HammerDB TPROC-C workload by design intended as CPU and memory intensive workload derived from TPC-C – so that we get to benchmark at maximum CPU performance at a much smaller database footprint. For TPC-C this meant enough available spindles to reduce I/O latency and for TPC-H enough bandwidth for data throughput.

C++ 40

C++ Benchmarking Virtualization Open Source 40

Alex Russell

MARCH 6, 2021

Using a global ASP as a benchmark can further mislead thanks to the distorting effect of ultra-high-end prices rising while shipment volumes stagnate. Chip design choices and silicon economics are the defining feature of the still-growing Performance Inequality Gap. Today, either method returns a similar answer. A 2021 Global Baseline.

Performance 124

Performance Network Cache Metrics 124

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

Alex Russell

JANUARY 30, 2024

Engineering is the discipline of designing solutions under specific constraints. India's speed test medians are moving quickly, but variance is orders-of-magnitude wide, with 5G penetration below 25% in the most populous areas. You'll have to read on for what it is!

Performance 90

Performance Network Mobile Speed 90

IO River

NOVEMBER 15, 2023

For example, if a request activates a rule designed to block SQL injection attempts, the WAF might automatically block that request, preventing it from reaching your web application.‍Security Let's break down this Security Flywheel into its core components: ‍Research, Close Breaches, and Test. It's an ongoing, iterative process.

Traffic 52

Traffic Network Logistics Architecture 52

Alex Russell

APRIL 29, 2021

As an engineer on a browser team, I'm privy to the blow-by-blow of various performance projects, benchmark fire drills, and the ways performance marketing (deeply) impacts engineering priorities. With each team, benchmarks lost are understood as bugs. All modern browsers are fast, Chromium and Safari/WebKit included. Lower is better.

Media 145

Media Games Education Engineering 145

The Morning Paper

MAY 14, 2019

Last time around we looked at the DeathStarBench suite of microservices-based benchmark applications and learned that microservices systems can be especially latency sensitive, and that hotspots can propagate through a microservices architecture in interesting ways. on end-to-end latency) and less than 0.15% on throughput.

Big Data 45

Big Data Cloud Performance Hardware 45

VoltDB

JUNE 1, 2017

These systems were designed to have a lifetime of half a decade or more, and rapidly changing hardware meant that the initial deployment had to be sized for 5-7 years out. Manpower Optimizers” want help with managing development and test in a large corporate environment.

Hardware 56

Hardware Latency Virtualization Cloud 56

IO River

NOVEMBER 2, 2023

For example, if a request activates a rule designed to block SQL injection attempts, the WAF might automatically block that request, preventing it from reaching your web application.‍Security Flywheel‍‍When it comes to fortifying web applications, think of security as a flywheel—an ever-revolving cycle that gains momentum with each turn.

Traffic 40

Traffic Network Logistics Architecture 40

VoltDB

JUNE 1, 2017

These systems were designed to have a lifetime of half a decade or more, and rapidly changing hardware meant that the initial deployment had to be sized for 5-7 years out. Manpower Optimizers” want help with managing development and test in a large corporate environment.

Hardware 40

Hardware Latency Virtualization Cloud 40

SQL Server According to Bob

SEPTEMBER 26, 2016

Our customers who deployed Availability Groups were now using servers for primary and secondary replicas with 12+ core sockets and flash storage SSD arrays providing microsecond to low millisecond latencies. Our design needed to scale and be adaptable to the modern hardware on the market. one without a replica).

Availability 40

Availability Servers Hardware Benchmarking 40

John McCalpin

JANUARY 22, 2018

After almost four weeks, we have a solid characterization of the behavior — no tested code exceeds an execution rate of 12 vector pipe instructions every 7 cycles (6/7 of the nominal peak) when executed on a single core — but we are unable to propose a testable quantitative model for the source of the throughput limitation.

Latency 40

Latency Hardware Code Testing 40

Alex Russell

OCTOBER 22, 2017

Budgets are scaled to a benchmark network & device. Automating testing against an objective baseline. Deciding what benchmark to use for a performance budget is crucial. It simulates a link with a 400ms RTT and 400-600Kbps of throughput (plus latency variability and simulated packet loss). What’s going on here?

Performance 68

Performance Benchmarking Network Mobile 68

Smashing Magazine

JANUARY 11, 2021

Performance isn’t just a technical concern: it affects everything from accessibility to usability to search engine optimization, and when baking it into the workflow, design decisions have to be informed by their performance implications. You can then mimic the 90th percentile’s experience for testing. Quick Wins.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Performance isn’t just a technical concern: it affects everything from accessibility to usability to search engine optimization, and when baking it into the workflow, design decisions have to be informed by their performance implications. Testing And Monitoring. You can then mimic the 90th percentile’s experience for testing.

Performance 145

Performance Cache Network Metrics 145

ScaleOut Software

MAY 15, 2014

Likewise, object access paths must be heavily multi-threaded and avoid lock contention to minimize access latency and maximize throughput. Testing Scale-Up Performance. So our comments will be confined to what testing we felt was valuable and how well SOSS performed. A Few Words on Design Philosophy: Keep It Simple.

Cache 40

Cache Servers Network Design 40

SQL Server According to Bob

JANUARY 11, 2020

​​ With new ​​ innovations ​​ come ​​ new terms, designs, ​​ and ​​ algorithms. This is different from ​​ the reference count design ​​ that was ​​ used in SQL Server 7.0 and ​​ 2000.

Servers 40

Servers Cache Database Media 40

SQL Server According to Bob

JANUARY 11, 2020

Many high-end disk subsystems provide high-speed cache facilities to reduce the latency of read and write operations. Microsoft SQL Server I/O Design To fully understand SQL Server I/O design, it is important to understand the basics of database file I/O operations, transaction log I/O operations, and transactional consistency maintenance.

Servers 40

Servers Cache Media Hardware 40