Brendan Gregg

OCTOBER 8, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. ^C Some one-liners: # New processes with arguments bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'.

C++ 105

C++ Virtualization Programming Latency 105

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 221

Database Traffic Transportation Open Source 221

The Netflix TechBlog

MARCH 13, 2020

As mentioned in our earlier blog post , Intel and Netflix have been collaborating on the SVT-AV1 encoder and decoder framework since August 2018. SVT-AV1 also includes extensive documentation on the encoder design targeted to facilitate the onboarding process for new developers.

Open Source 159

Open Source Efficiency C++ Speed 159

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 206

Database Traffic Transportation Open Source 206

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 103

Performance Latency Cache Virtualization 103

Abhishek Tiwari

DECEMBER 27, 2017

There are several emerging data trends that will define the future of ETL in 2018. In 2018, we anticipate that ETL will either lose relevance or the ETL process will disintegrate and be consumed by new data architectures. Obviously, this has a clear impact on traditional ETL process which provides a fixed set of views.

Big Data 49

Big Data Artificial Intelligence Storage Hardware 49

All Things Distributed

SEPTEMBER 25, 2017

This Region will consist of three Availability Zones at launch, and it will provide even lower latency to users across the Middle East. Plus another AWS GovCloud (US) Region in the United States is coming online by the end of 2018. This news marks the 22nd AWS Region we have announced globally.

Cloud 119

Cloud Education Energy Government 119

ACM Sigarch

MARCH 18, 2019

How many buffers are needed to track pending requests as a function of needed bandwidth and expected latency? Can one both minimize latency and maximize throughput for unscheduled work? These models are useful for insight regarding the basic computer system performance metrics of latency and throughput (bandwidth). Little’s Law.

Systems 61

Systems Latency Performance Analytics 61

Brendan Gregg

OCTOBER 7, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. ^C Some one-liners: # New processes with arguments bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'.

C++ 40

C++ Virtualization Programming Latency 40

Brendan Gregg

AUGUST 18, 2019

For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. For smaller environments, it can be of more use helping eliminate latency outliers. bpftrace uses BPF (Berkeley Packet Filter), an in-kernel execution engine that processes a virtual instruction set.

Latency 57

Latency C++ Cache Programming 57

Brendan Gregg

AUGUST 29, 2021

Problem Statement The microservice managed and processed large files, including encrypting them and then storing them on S3. 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. Mostly screenshots. ## 1.

Cache 78

Cache C++ AWS Java 78

CSS - Tricks

APRIL 1, 2021

Google’s industry benchmarks from 2018 also provide a striking breakdown of how each second of loading affects bounce rates. Source: Google /SOASTA Research, 2018. I’m going to update my referenced URL to the new site to help decrease latency that adds drag to the initial page load. Improvement #2: The Critical Render Path.

Cache 94

Cache Social Media Media Website 94

ACM Sigarch

MARCH 25, 2019

How many buffers are needed to track pending requests as a function of needed bandwidth and expected latency? Can one both minimize latency and maximize throughput for unscheduled work? The M/M/1 queue will show us a required trade-off among (a) allowing unscheduled task arrivals, (b) minimizing latency, and (c) maximizing throughput.

Systems 54

Systems Latency Performance C++ 54

Abhishek Tiwari

DECEMBER 27, 2017

In 2018, a widespread adaptation of Kubernetes for big data processing is anitcipated. For instance, scatter/gather pattern can be used to implement a MapReduce like batch processing architecture on top of Kubernetes. Pachyderm uses default Kubernetes scheduler to implement fault-tolerance and incremental processing.

Big Data 63

Big Data Storage Benchmarking Hardware 63

Speed Curve

FEBRUARY 5, 2024

desc="Time to process request at origin" NOTE: This is not a new API. Charlie Vazac introduced server timing in a Performance Calendar post circa 2018. Latency – How much time does it take to deliver a packet from A to B. db = Duration of the request processing spent querying the database.

Servers 64

Servers Cache Benchmarking Retail 64

Alex Russell

JANUARY 30, 2024

Put another way, the performance gap between what devices the wealthy carry and what budget shoppers carry grew more this year (252 points) than the year-over-year gains from process and architecture at the volume price point (174 points). GHz Cortex-A53) on a 10nm process : Geekbench 6 scores for the Galaxy A51 versus today's leading device.

Performance 98

Performance Network Mobile Speed 98

Brendan Gregg

FEBRUARY 28, 2023

My personal opinion is that I don't see a widespread need for more capacity given horizontal scaling and servers that can already exceed 1 Tbyte of DRAM; bandwidth is also helpful, but I'd be concerned about the increased latency for adding a hop to more memory. Ford, et al., “TCP

Performance 52

Performance Latency Cache Virtualization 52

KeyCDN

SEPTEMBER 12, 2019

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. It allows comprehensive on the fly image transformation and optimization.

Social Media 106

Social Media Media Google Website 106

Alex Russell

APRIL 29, 2021

After years of standards discussion and the first delivered to other platforms in 2018, iOS 14.5 April 2018 , but not usable until several releases later). For heavily latency-sensitive use-cases like WebXR, this is a critical component in delivering a good experience. finally shipped Audio Worklets this week. Pointer Lock.

Media 145

Media Games Education Engineering 145

Alex Russell

OCTOBER 22, 2017

Answering it requires an understanding of how browsers process resources (which differs by type) and the concept of the critical path. This input processing happens on document’s main thread , where JavaScript runs. Processing input (including scrolling w/ active touch listeners). ” A good question!

Performance 74

Performance Network Benchmarking Mobile 74

HammerDB

OCTOBER 12, 2018

tpcc | DELIVERY | PROCEDURE | @ | 2018-10-11 08:57:34 | 2018-10-11 08:57:34 | DEFINER | | latin1 | latin1_swedish_ci | latin1_swedish_ci |. maximum transition latency: Cannot determine or is not supported. . Copyright (C) 2003-2018 Steve Shaw. c_ytd_payment: 10.00

Best Practices 40

Best Practices Scalability Performance C++ 40

HammerDB

OCTOBER 8, 2018

This limitation is at the database level rather than the hardware level, nevertheless with up to date hardware (from mid-2018) PostgreSQL on a 2 socket system can be expected to deliver more than 2M PostgreSQL TPM and 1M NOPM with the HammerDB TPC-C test. . maximum transition latency: Cannot determine or is not supported. Latency: 0.

Best Practices 40

Best Practices Scalability Performance Hardware 40

Adrian Cockcroft

NOVEMBER 18, 2019

OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto. OPN402 Firecracker open-source innovation Since Firecracker’s release at re:Invent 2018, several open-source teams have built on it, while AWS has continued investing in Firecracker’s speed.

Open Source 40

Open Source AWS Lambda Serverless 40

Adrian Cockcroft

NOVEMBER 18, 2019

OPN304 Learnings from migrating a service from JDK 8 to JDK 11 AWS Lambda improved latency by migrating to JDK 11 with Amazon Corretto. OPN402 Firecracker open-source innovation Since Firecracker’s release at re:Invent 2018, several open-source teams have built on it, while AWS has continued investing in Firecracker’s speed.

Open Source 40

Open Source AWS Lambda Serverless 40

Brendan Gregg

AUGUST 29, 2021

Problem Statement The microservice managed and processed large files, including encrypting them and then storing them on S3. 1072-aws (xxx) 12/18/2018 _x86_64_ (16 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 5.03 biolatency From [bcc], this eBPF tool shows a latency histogram of disk I/O. Mostly screenshots. ## 1.

Cache 40

Cache C++ AWS Systems 40

HammerDB

NOVEMBER 5, 2018

Bear in mind that writing to the log takes CPU, it will be a log writing thread or process that needs CPU time to be scheduled to be active, it also requires memory for the log buffer and finally disk for the log itself, therefore this log wait is more than just the disk component. A good example of how tuning is an iterative process.

Benchmarking 40

Benchmarking Database C++ Virtualization 40

Percona

JULY 1, 2023

This post was originally published in July 2018 and was updated in July 2023. It efficiently manages read and write operations, optimizes data access, and minimizes contention, resulting in high throughput and low latency to ensure that applications perform at their best. What are the differences between Aurora and RDS?

AWS 52

AWS Database Serverless Storage 52

IO River

NOVEMBER 2, 2023

The company had to compensate customers for their losses, including reimbursement for flights, accommodation, and $135,000 over tarmac delays.What Is The Process For Calculating Availability?By Proactive monitoring aids in detecting performance bottlenecks, latency difficulties, and other anomalies that may influence availability.

Availability 52

Availability Social Media Traffic Games 52

IO River

NOVEMBER 2, 2023

The company had to compensate customers for their losses, including reimbursement for flights, accommodation, and $135,000 over tarmac delays.What Is The Process For Calculating Availability?By Proactive monitoring aids in detecting performance bottlenecks, latency difficulties, and other anomalies that may influence availability.

Availability 52

Availability Social Media Traffic Games 52

Smashing Magazine

SEPTEMBER 6, 2021

Finally, not inlining resources has an added latency cost because the file needs to be requested. This retry process best happens, of course, somewhere before the back-end server — for example, at the load balancer. There is ongoing work to improve this two-step Alt-Svc process somewhat. Clients and QUIC Discovery.

Network 120

Network Servers Cache Traffic 120

High Scalability

SEPTEMBER 14, 2018

events processed to date 300k+ users globally 50% of the Fortune 100 use @pagerduty 10,500+ customers of every size 300+ integrations ?? SCM slots between DRAM and flash in terms of latency, cost, and density. They'll love you even more. RachFrieee : 3.6B Enterprise grade security #PDSummit18 @jenntejada.

Internet 30

Internet Internet Scalability Education 30

High Scalability

JULY 20, 2018

jaybo_nomad : The Allen Institute for Brain Science is in the process of imaging 1 cubic mm of mouse visual cortex using TEM at a resolution of 4nm per pixel. That means multiple data indirections mean multiple cache misses. They are very expensive. This is where your performance goes.

Internet 121

Internet Internet Scalability Automotive 121

Alex Russell

FEBRUARY 3, 2023

Partisans for slow, complex frameworks have successfully marketed lemons as the hot new thing, despite the pervasive failures in their wake, and crowding out higher-quality options in the process. [1] In each iteration, they must accept a smaller and smaller rhetorical lane as their sales grow, but the user outcomes fail to improve.

Social Media 130

Social Media Website Technology Technology 130

Alex Russell

MARCH 6, 2021

Advances in browser content processing. India became a 4G-centric market sometime in 2018. If those specs sound eerily familiar, it's perhaps because they're identical to 2016's $200USD Moto G4 , all the way down to the 2011-vintage 28nm SoC process node used to fab the chip's anemic, 2012-vintage A53 cores.

Performance 127

Performance Network Mobile Metrics 127

Percona

AUGUST 10, 2018

Autovacuum is one of the background utility processes that starts automatically when you start PostgreSQL. As you see in the following log, the postmaster (parent PostgreSQL process) with pid 2862 has started the autovacuum launcher process with pid 2868. How many autovacuum processes can run at a time ? .

Tuning 69

Tuning Cache Database Storage 69

Testsigma

FEBRUARY 12, 2021

The implementation of emerging technologies has helped improve the process of software development, testing, design and deployment. With all of these processes in place, cost optimization is also a high concern for organizations worldwide. Dominance of Robotic Process Automation. Hyperautomation. The most recent 2021 trend.

Artificial Intelligence 92

Artificial Intelligence Software Software IoT 92

Smashing Magazine

JANUARY 7, 2019

So, if we created an overview of all the things we have to keep in mind when improving performance — from the very start of the process until the final release of the website — what would that list look like? Also, as Patrick Meenan suggested, it’s worth to plan out a loading sequence and trade-offs during the design process.

Performance 111

Performance Cache Network Metrics 111