Dynatrace

SEPTEMBER 23, 2020

Storage mount points in a system might be larger or smaller, local or remote, with high or low latency, and various speeds. For example: All subfolders of the /opt directory are mounted as local, low latency, high-throughput drives, with relatively low storage capacity. Stay tuned for upcoming news about these changes.

Storage 227

Storage Latency Operating System Network 227

DZone

JULY 10, 2019

In addition, compute and storage are increasingly being separated causing larger latencies for queries. This article provides the top 10 tips for performance tuning for real-world workloads when running Spark on Alluxio with data locality, giving the most bang for the buck. The first few tips are related to locality.

Best Practices 138

Best Practices Storage Latency Tuning 138

The Netflix TechBlog

SEPTEMBER 24, 2021

Uploading and downloading data always come with a penalty, namely latency. Figure 3: Video Processing with Index and Virtual Assembly Using virtual assembly greatly improves the latency performance of the ProRes 422 HQ proxy generation by removing one round trip of cloud downloading and cloud uploading by the physical assembler.

Cloud 240

Cloud Media Storage Cache 240

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? I've shared many posts about superpower observability tools, but often humble hacking is just as effective. Try changing the kernel clocksource.

Speed 103

Speed Java AWS Virtualization 103

O'Reilly

FEBRUARY 18, 2025

The eval process combines: Human review Model-based evaluation A/B testing The results then inform two parallel streams: Fine-tuning with carefully curated data Prompt engineering improvements These both feed into model improvements, which starts the cycle again. Were experiencing high latency in responses.

Latency 62

Latency Tuning Metrics Testing 62

Dynatrace

DECEMBER 2, 2021

You can set SLOs based on individual indicators, such as batch throughput, request latency, and failures-per-second. Gathering and analyzing metrics over time will help you determine the overall effectiveness of your SLOs so you can tune them as your processes mature and improve. SLO best practices.

Metrics 246

Metrics Best Practices DevOps Infrastructure 246

Scalegrid

JANUARY 25, 2024

Key Takeaways Critical performance indicators such as latency, CPU usage, memory utilization, hit rate, and number of connected clients/slaves/evictions must be monitored to maintain Redis’s high throughput and low latency capabilities. Similarly, an increased throughput signifies an intensive workload on a server and a larger latency.

Metrics 130

Metrics Monitoring Latency Cache 130

Dynatrace

MAY 17, 2023

The other sections on that page (such as Disk analysis) provide further information and charts on topics such as available disk space, latency, dropped network packets, refused connections, and more. This alone can already greatly help in identifying slow query hot spots and speed up your platform by making sure queries are optimized.

Metrics 243

Metrics Monitoring Database Network 243

KeyCDN

MARCH 10, 2021

The image below shows a significant drop in latency once we've launched the new point of presence in Israel. In fact, latency has been reduced by almost 50%! With a total of 5 POPs in Oceania, this continent benefits from lower latency with every POP added. Lagos - Nigeria Africa got its second POP!

Latency 110

Latency Internet Internet Speed 110

KeyCDN

NOVEMBER 4, 2021

The POP is strategially located within the country and lowers latency overall. KeyCDN is always on the lookout for ways to minimize latency and accelerate asset delivery worldwide. Hola Mexico! We've launched our new point of presence (POP) in Mexico City. In this case, the POP's identifier is mxmc.

Latency 111

Latency Cache Tuning Traffic 111

Percona

MARCH 23, 2023

Nowadays, solid-state drives (SSDs) or non-volatile memory express (NVMe) drives are preferred over traditional hard disk drives (HDDs) for database servers due to their faster read and write speeds, lower latency, and improved reliability. If you see concurrency issues, you can tune this variable. I hope this helps!

Performance 144

Performance Hardware Tuning Storage 144

The Morning Paper

NOVEMBER 10, 2019

Here are the bombshell paragraphs: Our datacenter applications seek ever more CPU-efficient and lower-latency communication, which Pony Express delivers. The desire for CPU efficiency and lower latencies is easy to understand. ” That’s 4-8x the speed of evolution and feedback cycles. Emphasis mine). Performance numbers.

Network 92

Network Transportation Latency Entertainment 92

Percona

NOVEMBER 3, 2023

In order to speed up the benchmark indexes must be added. Remember to keep in mind that the performance metrics are dependent not only upon the cluster’s hardware and system resources but as to the level of tuning, which, in this case, has not been addressed. psql pgbench <<_eof1_ qecho adding node citus3.

Database 114

Database Benchmarking Latency C++ 114

Percona

SEPTEMBER 1, 2023

While there is no magic bullet for MySQL performance tuning, there are a few areas that can be focused on upfront that can dramatically improve the performance of your MySQL installation. What are the Benefits of MySQL Performance Tuning? A finely tuned database processes queries more efficiently, leading to swifter results.

Tuning 52

Tuning Database Performance Hardware 52

The Netflix TechBlog

NOVEMBER 20, 2023

As our business scales globally, the demand for data is growing and the needs for scalable low latency incremental processing begin to emerge. Then ETL jobs can join the original source table with the ICDC table on those group-by keys by using ICDC as a filter to speed up the processing to enable calculations of a much smaller set of data.

Processing 214

Processing Big Data Efficiency Engineering 214

VoltDB

JUNE 19, 2017

Unfortunately, this means that the age-old Telco bugbears will rear their ugly heads again, including latency. 5G, as a fundamental requirement, mandates a 1 millisecond latency from the datasource to its destination. This requires 1 ms network latency. The post Latency: Will it undermine the most interesting 5G use cases?

Latency 40

Latency Retail Virtualization Hardware 40

VoltDB

JUNE 19, 2017

Unfortunately, this means that the age-old Telco bugbears will rear their ugly heads again, including latency. 5G, as a fundamental requirement, mandates a 1 millisecond latency from the datasource to its destination. This requires 1 ms network latency. The post Latency: Will it undermine the most interesting 5G use cases?

Latency 40

Latency Retail Virtualization Hardware 40

KeyCDN

JANUARY 25, 2023

With a dedicated POP, latency for visitors is reduced even further, resulting in better loading times. According to the Speedtest Global Index, Peru has an average internet connection speed of just over 67.5 The connection speed has room to grow compared to other countries in the region. We have more sites planned for this year.

Latency 60

Latency Cache Tuning Speed 60

All Things Distributed

OCTOBER 2, 2017

Performant – DynamoDB consistently delivers single-digit millisecond latencies even as your traffic volume increases. DynamoDB automatically re-distributes your data to healthy servers to ensure there are always multiple replicas of your data without you needing to intervene.

Internet 110

Internet Internet AWS Performance 110

The Morning Paper

MAY 21, 2019

This boils down to a single digit µs latency toleration in the tail for far memory, and in addition to security and privacy concerns, rules out remote memory solutions. Thus we’re fundamentally trading (de)-compression latency at access time for the ability to pack more data in memory. ML-based auto-tuning. Evaluation.

Software 78

Software Software Google Hardware 78

All Things Distributed

APRIL 9, 2015

At Amazon we have hundreds of teams using machine learning and by making use of the Machine Learning Service we can significantly speed up the time they use to bring their technologies into production. Synchronous events operate with low latency so you can deliver dynamic, interactive experiences to your users.

Lambda 103

Lambda Cloud IoT AWS 103

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. Measuring the speed of time Is there already a microbenchmark for os::javaTimeMillis()? I've shared many posts about superpower observability tools, but often humble hacking is just as effective. Try changing the kernel clocksource.

Speed 40

Speed Java AWS Virtualization 40

All Things Distributed

DECEMBER 12, 2013

Moreover, a GSI''s performance is designed to meet DynamoDB''s single digit millisecond latency - you can add items to a Users table for a gaming app with tens of millions of users with UserId as the primary key, but retrieve them based on their home city, with no reduction in query performance. What was the highest ratio of wins vs. losses?

Games 108

Games Scalability Database Retail 108

KeyCDN

JANUARY 31, 2019

Today we’re excited to announce that we’ve launched yet another POP location to help further supercharge our network’s content delivery speeds. The next closest active POP location to Bucharest was Istanbul which was still almost 900km away; this distance adds up in terms of latency. USD each online annually.

Internet 48

Internet Internet Ecommerce Speed 48

SQL Performance

APRIL 27, 2020

This works well for many SQL Server workloads, however, there have been use cases for a lower CPU latency and higher clock speed for CPU-heavy workloads and a need for higher memory per vCore. Overall, the 72 vCore size can provide more CPU performance than the 80 vCore Gen 5 by providing a lower CPU latency and higher clock speeds.

Azure 55

Azure Database Serverless Hardware 55

HammerDB

MAY 5, 2019

However in the Skylake microarchitecture (you can see a list of CPUs here ) the PAUSE instruction changed and in the documentation it says “the latency of the PAUSE instruction in prior generation microarchitectures is about 10 cycles, whereas in Skylake microarchitecture it has been extended to as many as 140 cycles.”

Testing 49

Testing Tuning Latency Storage 49

HammerDB

OCTOBER 18, 2019

cpupower frequency-info analyzing CPU 0: driver: intel_pstate CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: Cannot determine or is not supported. The governor "powersave" may decide which speed to use within this range.

Benchmarking 63

Benchmarking Performance Hardware C++ 63

KeyCDN

OCTOBER 24, 2018

Today we’re excited to announce that we’ve launched yet another POP location to help further supercharge our network’s content delivery speeds. Although both countries are relatively close to one another, they are separated by a distance of approximately 500km, which adds up in terms of latency.

Internet 48

Internet Internet Speed Network 48

VoltDB

MAY 30, 2024

If you pick a data platform that can only be deployed in a set number of geographic locations, it could lead to latency issues due to increasingly stringent latency SLAs and trouble meeting those SLAs due to the limits of physics. To avert a drag on latency , you can make the change locally and send it to the remote site.

Latency 52

Latency Cloud Database Tuning 52

KeyCDN

AUGUST 15, 2019

Before you begin tuning your website or application, you must first figure out which metrics matter most to your users and establish some achievable benchmarks. When the word “performance” is heard, most people immediately think of speed. What is Performance Testing? Peak response time: The longest response time.

Testing Tools 55

Testing Tools Best Practices Performance Testing Testing 55

IO River

NOVEMBER 2, 2023

‍Performance Matters: The physical distance between a user and a data center impacts the data transfer speed. Latency is a concept that increases with distance, so a signal that has to travel 1,000 KM will be much faster compared to a signal sprinting for that 100,000 KM.

Traffic 52

Traffic Cache Servers Network 52

Smashing Magazine

SEPTEMBER 6, 2021

Using just a few (but still more than one), however, could nicely balance congestion growth with better performance, especially on high-speed networks. Finally, not inlining resources has an added latency cost because the file needs to be requested. In our own early tests , I found seriously diminishing returns at about 40 files.

Network 120

Network Servers Cache Traffic 120

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. Both Xen and KVM have had many performance and security improvements, and workloads can now be tuned to run at almost bare metal speeds (say, a 3% loss or less).

Virtualization 75

Virtualization AWS Engineering Hardware 75

IO River

NOVEMBER 2, 2023

Performance Matters: The physical distance between a user and a data center impacts the data transfer speed. Latency is a concept that increases with distance, so a signal that has to travel 1,000 KM will be much faster compared to a signal sprinting for that 100,000 KM.

Traffic 40

Traffic Cache Servers Network 40

HammerDB

OCTOBER 12, 2018

maximum transition latency: Cannot determine or is not supported. . GHz. The governor "performance" may decide which speed to use within this range. CPUs which need to have their frequency coordinated by software: 0 . hardware limits: 1000 MHz - 3.80 current CPU frequency: 1.99 innodb_read_only=0.

Best Practices 40

Best Practices Scalability Performance C++ 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. For specific information on I/O tuning and balancing, you will find more details in the following document. This cache is often supported by a battery-powered backup facility.

Servers 40

Servers Cache Media Hardware 40

Smashing Magazine

AUGUST 22, 2021

A Primer on Speed. Discussing performance and “speed” can quickly get complex, because many underlying aspects contribute to a web-page loading “slowly”. Because we are dealing with network protocols here, we will mainly look at network aspects, of which two are most important: latency and bandwidth. Congestion Control.

Performance 109

Performance Network Latency Servers 109