Scalegrid

APRIL 16, 2020

Deploying your application and database on the same VPC also provides the lowest possible latency path. This is especially apparent in the enterprise space, as these organizations have teams of database administrators managing their deployments and require the freedom to exercise their internal expertise over their clusters.

Cloud 242

Cloud Azure AWS Database 242

Randon ASCII

MARCH 20, 2019

And, FMA instructions often have lower latency than a multiply followed by an add instruction. On the Xbox 360 CPU the latency and throughput of FMA was the same as for fmul or fadd so using an FMA instead of an fmul followed by a dependent fadd would halve the latency. Emulating FMA.

Games 48

Games Latency Software Engineering Programming 48

All Things Distributed

NOVEMBER 15, 2010

For example, the most fundamental abstraction trade-off has always been latency versus throughput. Modern CPUs strongly favor lower latency of operations with clock cycles in the nanoseconds and we have built general purpose software architectures that can exploit these low latencies very well. Where to go from here?

AWS 125

AWS Programming Latency Architecture 125

All Things Distributed

NOVEMBER 21, 2017

Redis's microsecond latency has made it a de facto choice for caching. Four years ago, as part of our AWS fast data journey, we introduced Amazon ElastiCache for Redis , a fully managed, in-memory data store that operates at microsecond latency. TB of in-memory capacity in a single cluster.

Games 96

Games Latency Retail Education 96

The Morning Paper

JULY 4, 2019

They use a combination of timeouts, retries, and fallbacks to try to mitigate the effects of these failures, but these don’t get exercised as often as the happy path, so how can we be confident they’ll work as intended when called upon? On error rates.

Latency 77

Latency Engineering Metrics Traffic 77

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. Auto Scaling is on by default for all new tables and indexes.

Internet 110

Internet Internet AWS Performance 110

Brendan Gregg

JUNE 30, 2018

sounds like a homework exercise of purely academic value. If you develop a habit of reading only the operation rate and latency numbers from a lengthy benchmark report (or you have a shell script to do this that feeds a GUI), it's easy to miss other details in the report such as the error rate. ### 4. What's the limiter?" No packets.

Benchmarking 47

Benchmarking Latency Cache Network 47

CSS - Tricks

APRIL 1, 2021

With all of this in mind, I thought improving the speed of my own version of a slow site would be a fun exercise. Redirects are often pretty light in terms of the latency that they add to a website, but they are an easy first thing to check, and they can generally be removed with little effort. Improvement #2: The Critical Render Path.

Cache 94

Cache Social Media Media Website 94

Brendan Gregg

JUNE 29, 2018

sounds like a homework exercise of purely academic value. If you develop a habit of reading only the operation rate and latency numbers from a lengthy benchmark report (or you have a shell script to do this that feeds a GUI), it's easy to miss other details in the report such as the error rate. ### 4. What's the limiter?" No packets.

Benchmarking 40

Benchmarking Latency Cache Network 40

Adrian Cockcroft

MARCH 17, 2020

There are many possible failure modes, and each exercises a different aspect of resilience. The essential component of a control system is a low latency and dependable way to measure the thing we are trying to control. Memorial at Hawaiian native burial ground, Kapalua, Maui. What Happens Next?

Healthcare 52

Healthcare Government Airlines Systems 52

The Morning Paper

NOVEMBER 14, 2019

Taiji’s routing table is a materialized representation of how user traffic at various edge nodes ought to be distributed over available data centers to balance data center utilization and minimize latency. For example, balance utilisation across all data centers, or optimise for network latency.

Traffic 42

Traffic Internet Internet Latency 42

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Collecting some critical metrics at one second intervals, with a total observability latency of ten seconds or less matches the human attention span much better. A resilient system continues to operate successfully in the presence of failures.

Latency 53

Latency Systems Engineering Hardware 53

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Collecting some critical metrics at one second intervals, with a total observability latency of ten seconds or less matches the human attention span much better. A resilient system continues to operate successfully in the presence of failures.

Latency 52

Latency Systems Engineering Hardware 52

The Agile Manager

DECEMBER 17, 2008

Traditional IT projects are mass economy-of-scale exercises: once development begins, armies of developers are unleashed. 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. An Agile team is not an exercise in scale.

Code 40

Code Latency Metrics Testing 40

The Morning Paper

JANUARY 23, 2020

1:18pm a key observation was made that an API call to populate the homepage sidebar saw a huge jump in latency. The process tracing exercise included: Examning IRC transcripts from multiple channels. Members of the team begin diagnosing the issue using the #sysops and #warroom internal IRC channels.

Internet 53

Internet Internet Cache Engineering 53

John McCalpin

AUGUST 1, 2018

This is an intellectually challenging and labor-intensive exercise, requiring detailed review of the published details of each of the components of the system, and usually requiring significant “detective work” (using customized microbenchmarks, hardware performance counter analysis, and creative thinking) to fill in the gaps.

Hardware 40

Hardware Transportation Performance Latency 40

John McCalpin

AUGUST 1, 2018

This is an intellectually challenging and labor-intensive exercise, requiring detailed review of the published details of each of the components of the system, and usually requiring significant “detective work” (using customized microbenchmarks, hardware performance counter analysis, and creative thinking) to fill in the gaps.

Hardware 40

Hardware Transportation Performance Latency 40

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. This is left as an exercise for the application developer at present. This means that the overheads of system calls become much more noticeable. What about security?

Hardware 56

Hardware Programming Media Storage 56

John McCalpin

JANUARY 22, 2018

The exercise seemed simple enough — just fix one item in the Colfax code and we should be finished. 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. Instead, we found puzzle after puzzle.

Latency 40

Latency Hardware Code Testing 40

John McCalpin

JANUARY 22, 2018

There was no deep goal — just a desire to see the maximum GFLOPS in action. The exercise seemed simple enough — just fix one item in the Colfax code and we should be finished. Using the minimum number of accumulator registers needed to tolerate the pipeline latency (12), the assembly code for the inner loop is: B1.8:

Latency 40

Latency Hardware Code Testing 40

The Agile Manager

AUGUST 23, 2007

Management of a professional capability is thus an exercise in making lots of adjustments, not pushing blindly ahead toward a solution. The principal objective in managing a highly-capable organisation is not to take decisions for each person, but to keep in alignment decisions people take.

Innovation 40

Innovation Technology Technology Latency 40

O'Reilly Software

MARCH 7, 2018

Since it is potentially unbounded, we can’t wait—buffer elements—until we have received all data before we act upon it, but need to do so in an incremental fashion—ideally without overwhelming ourselves, or overwhelming those who consume the data we produce or incur a too-high processing latency. of ( Invoice. alsoTo ( Sink. of ( Order.

Transportation 72

Transportation Java Programming Architecture 72

The Netflix TechBlog

MARCH 6, 2019

We parallelize rerun jobs with Titus , Netflix’s container management platform, which allows us to exercise many hundreds of replay files in minutes. And shaving off hours is especially beneficial in latency sensitive workflows, like encoding videos that are released on Netflix the day they are shot.

Media 218

Media Storage Processing Cache 218