SQL Performance

SEPTEMBER 17, 2019

This article will cover many areas that database administrators need to be aware of in order to properly license, recover, and tune a Reporting Services installation. Unlike the system database tempdb, ReportServerTempDB is not recreated at startup. Tuning Options. Tuning SSRS is much like any other application.

Tuning 67

Tuning Servers Database Best Practices 67

John McCalpin

APRIL 25, 2023

The primary metric for memory bandwidth in multicore processors is that maximum sustained performance when using many cores. This metric is interesting because we don’t always have the luxury of parallelizing every application we run, and our operating systems almost always process each call (e.g., Stay tuned!

Benchmarking 97

Benchmarking Cache Latency Tuning 97

Brendan Gregg

SEPTEMBER 5, 2021

They claimed that the ZFS file system was consuming 30% of CPU capacity. Problem Statement The microservice was for metrics ingestion and had recently updated their base OS image (BaseAMI). Monitoring I started with the cloud-wide monitoring tool, [Atlas], to check high-level CPU metrics. contending for the same locks).

Cache 145

Cache Cloud Java Tuning 145

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. sysbench is a widely used open-source benchmarking tool that is designed to evaluate the performance of CPU, memory, disk I/O, and database systems. Operating System: Ubuntu 22.04 4.22 %usr 38.40

Performance 54

Performance Benchmarking Cache Storage 54

Dynatrace

OCTOBER 15, 2020

Improve cloud platform management with deeper insights into platform metrics. Statically linked application binaries have their merits; they’re self-contained and they don’t have dependencies on the systems they’re deployed to. Automatically monitor all important Go metrics. Do much more.

Transportation 186

Transportation Monitoring Metrics Code 186

The Netflix TechBlog

JULY 1, 2019

Some of the metrics we use to measure performance on the Netflix TV app include animation frames per second (FPS), key input responsiveness (the amount of time before a member’s key press renders a change in the UI), video playback speed, and app start-up time. The majority of legacy devices run at 28MB of surface cache.

Cache 166

Cache Design Testing Development 166

The Netflix TechBlog

OCTOBER 15, 2019

caching (Memcached etc.), Another issue exists for the capture of schema changes, where some systems, like MySQL, don’t support transactional schema changes [1][2]. By their nature, they can only rely on the lowest common denominator of participating systems. providing advanced search capabilities (ElasticSearch etc.),

Transportation 192

Transportation Architecture Processing Storage 192

Brendan Gregg

SEPTEMBER 5, 2021

They claimed that the ZFS file system was consuming 30% of CPU capacity. Problem Statement The microservice was for metrics ingestion and had recently updated their base OS image (BaseAMI). Monitoring I started with the cloud-wide monitoring tool, Atlas , to check high-level CPU metrics. I worked on this code back at Sun.

Cache 52

Cache Cloud Java Tuning 52

Brendan Gregg

SEPTEMBER 5, 2021

They claimed that the ZFS file system was consuming 30% of CPU capacity. Problem Statement The microservice was for metrics ingestion and had recently updated their base OS image (BaseAMI). Monitoring I started with the cloud-wide monitoring tool, [Atlas], to check high-level CPU metrics. I worked on this code back at Sun.

Cache 40

Cache Cloud Java Tuning 40

The Netflix TechBlog

OCTOBER 18, 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., And finally each new observation needs to update the policy, compute offline policy evaluation metrics and then push the policy back to production so it can generate new intents to treat.

Infrastructure 126

Infrastructure Metrics Architecture Efficiency 126

The Morning Paper

MARCH 17, 2020

Applications and files systems access App Direct memory using CPU instructions offering a variety of options for controlling the ordering of store operations: cache-line flush, cache-line write back, and non-temporal stores (bypassing the cache hierarchy). The NOVA NVMM file system improves write performance by up to 7x.

Scalability 59

Scalability Latency Cache Media 59

The Netflix TechBlog

OCTOBER 18, 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., And finally each new observation needs to update the policy, compute offline policy evaluation metrics and then push the policy back to production so it can generate new intents to treat.

Infrastructure 100

Infrastructure Metrics Architecture Efficiency 100

Brendan Gregg

FEBRUARY 9, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate. Much of my testing was on Linux 4.14.11

Performance 75

Performance Benchmarking Cache Tuning 75

Smashing Magazine

MARCH 19, 2021

But we can’t really say just yet whether it had any impact on the business metrics — well, we’ll need to wait for a big book release to see that. Gael Metais suggested to more aggressively subset web fonts and look into caching issues with our AVIF files. Architecting Design Systems. Make Design Systems People Want to Use.

Mobile 140

Mobile Design Cache Code 140

High Scalability

NOVEMBER 25, 2019

He and his colleagues spend their productive hours scaling large distributed file systems. Our only option was to roll up our sleeves and build basic cloud file system components such as object store ourselves. Edge caching. Nginx for disk based caching. Java used to power core file system code. Introduction.

Architecture 52

Architecture Cache Azure Storage 52

Brendan Gregg

FEBRUARY 8, 2018

In this post I'll look at the Linux kernel page table isolation (KPTI) patches that workaround Meltdown: what overheads to expect, and ways to tune them. Also microbenchmarks, which often stress-test the system, will suffer the largest losses. This shows the system-wide syscall rate. Much of my testing was on Linux 4.14.11

Performance 40

Performance Benchmarking Cache Tuning 40

Rigor

SEPTEMBER 3, 2019

To decrease your chances of an attack, start with the following five steps: Ensure you are running the latest versions of software on all systems that deliver your application. STEP 7: Tune Your CDN Performance. Ultimately, the key to surviving a peak event is to have very good CDN cache designs. CONCLUSION.

Website 74

Website Cache Ecommerce Traffic 74

Smashing Magazine

SEPTEMBER 6, 2021

This approach was touted to be better for fine-grained caching because each subresource could be cached individually and the full bundle didn’t need to be redownloaded if one of them changed. As discussed in part 2 , in HTTP/2, this multiplexing is steered using its prioritization system. What Does It All Mean?

Network 105

Network Servers Cache Traffic 105

SQL Server According to Bob

JANUARY 11, 2020

This will help you increase system performance and avoid I/O environment errors. Important When planning, deploying, and maintaining a Microsoft SQL Server installation, ensure that the I/O system supports all the factors outlined in this article. The modifications persist even in the event of a system failure.

Servers 40

Servers Cache Media Hardware 40

HammerDB

NOVEMBER 5, 2018

As HammerDB supports graphical metrics for Oracle, this provides the best illustration however the concepts apply in general terms to all databases. To illustrate the data reads on Oracle we can flush the buffer cache. SQL> alter system flush buffer_cache; System altered. Oracle Log File Sync. commit_logging.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Smashing Magazine

AUGUST 22, 2021

For web-page loading, this slow-start approach can also affect metrics such as the first contentful paint, because only a small amount of data (tens of to a few hundred KB) can be transferred in the first few round trips. As such, tuning congestion logic is usually only done by a select few developers, and evolution is slow.

Performance 106

Performance Network Latency Servers 106