Taskbar Latency and Kernel Calls

Randon ASCII

Now that we suspect file I/O it’s necessary to go to Graph Explorer-> Storage-> File I/O. I work quickly on my computer and I get frustrated when I am forced to wait on an operation that should be fast.

Uber’s Big Data Platform: 100+ Petabytes with Minute Latency

Uber Engineering

To accomplish this, Uber relies heavily on making data-driven decisions at every level, from forecasting rider demand during high traffic events to identifying and addressing bottlenecks … The post Uber’s Big Data Platform: 100+ Petabytes with Minute Latency appeared first on Uber Engineering Blog. Uber is committed to delivering safer and more reliable transportation across our global markets.

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File systems unfit as distributed storage backends: lessons from ten years of Ceph evolution

The Morning Paper

File systems unfit as distributed storage backends: lessons from 10 years of Ceph evolution Aghayev et al., In this case, the assumption that a distributed storage backend should clearly be layered on top of a local file system. What is a distributed storage backend?

Narrowing the gap between serverless and its state with storage functions

The Morning Paper

Narrowing the gap between serverless and its state with storage functions , Zhang et al., Shredder is " a low-latency multi-tenant cloud store that allows small units of computation to be performed directly within storage nodes. "

The AWS Storage Gateway - All Things Distributed

All Things Distributed

Expanding the Cloud - The AWS Storage Gateway. Today Amazon Web Services has launched the AWS Storage Gateway, making the power of secure and reliable cloud storage accessible from customersâ?? s storage infrastructure. Once the AWS Storage Gatewayâ??s

MezzFS?—?Mounting object storage in Netflix’s media processing platform

The Netflix TechBlog

Mounting object storage in Netflix’s media processing platform By Barak Alon (on behalf of Netflix’s Media Cloud Engineering team) MezzFS (short for “Mezzanine File System”) is a tool we’ve developed at Netflix that mounts cloud objects as local files via FUSE. MezzFS?—?Mounting

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The Best Way to Host MongoDB on DigitalOcean

Scalegrid

We ran performance tests for MongoDB on DigitalOcean vs. AWS vs. Azure and found that DigitalOcean performance was in line with, if not better, on both high throughput and low latency in the deployment. They even offer amazingly low latency from Amazon AWS US-East to the DigitalOcean New York datacenter, which is great for applications that are running their front on mid-tier on AWS, but would like to use DigitalOcean for their MongoDB clusters.

Reducing Your Database Hosting Costs: DigitalOcean vs. AWS vs. Azure

Scalegrid

Since database hosting is more dependent on memory (RAM) than storage, we are going to compare various instance sizes ranging from just 1GB of RAM up to 64GB of RAM so you can see how costs vary across different application workloads. Does it affect latency?

Azure 236

Top 10 Tips for Making the Spark + Alluxio Stack Blazing Fast

DZone

In addition, compute and storage are increasingly being separated causing larger latencies for queries. Alluxio is leveraged as compute-side virtual storage to improve performance. The Apache Spark + Alluxio stack is getting quite popular particularly for the unification of data access across S3 and HDFS. But to get the best performance, like any technology stack, you need to follow the best practices.

The Anna Key-Value Store Now Has 355x the Performance of DynamoDB for the Dollar

High Scalability

They've posted about Anna's new superpowers in Going Fast and Cheap: How We Made Anna Autoscale : Using Anna v0 as an in-memory storage engine, we set out to address the cloud storage problems described above. Anna Paper: Eliminating Boundaries in Cloud Storage with Anna.

Expanding the Cloud - New AWS Region: US-West (Northern.

All Things Distributed

This new Region consists of multiple Availability Zones and provides low-latency access to the AWS services from for example the Bay Area. Driving Storage Costs Down for AWS Customers. Expanding the Cloud - The AWS Storage Gateway. All Things Distributed.

AWS 78

Updated Azure SQL Database Tier Options

SQL Performance

The basic tier provides up to 5 DTUs with standard storage. The standard tier supports from 10 up to 3000 DTUs with standard storage and the premium tier supports 125 up to 4000 DTUs with premium storage, which is orders of magnitude faster than standard storage.

Azure 56

Expanding the Cloud - Introducing the AWS Asia Pacific (Tokyo.

All Things Distributed

Japanese companies and consumers have become used to low latency and high-speed networking available between their businesses, residences, and mobile devices. The advanced Asia Pacific network infrastructure also makes the AWS Tokyo Region a viable low-latency option for customers from South Korea. Driving Storage Costs Down for AWS Customers. Expanding the Cloud - The AWS Storage Gateway. All Things Distributed.

AWS 66

Azure SQL Managed Instance Performance Considerations

SQL Performance

The General Purpose tier is designed for applications with typical performance and I/O latency requirements and provides built-in HA. The Business Critical tier is designed for applications that require low I/O latency and higher HA requirements. Storage.

Azure 66

Choosing a cloud DBMS: architectures and tradeoffs

The Morning Paper

We group the DBMS design choices and tradeoffs into three broad categories, which result from the need for dealing with (A) external storage; (B) query executors that are spun on demand; and (C) DBMS-as-a-service offerings. Choosing a cloud DBMS: architectures and tradeoffs Tan et al.,

Procella: unifying serving and analytical data at YouTube

The Morning Paper

That’s hard for many reasons, including the differing trade-offs between throughput and latency that need to be made across the use cases. Oh, and in additional to low latency, “ we require access to fresh data.”

Cloudburst: stateful functions-as-a-service

The Morning Paper

On the Cloudburst design teams’ wish list: A running function’s ‘hot’ data should be kept physically nearby for low-latency access. A low-latency autoscaling KVS can serve as both global storage and a DHT-like overlay network.

Cache 81

Push Zone Supports Image Processing

KeyCDN

Our edge servers are directly linked to our global storage cluster, which ensures faster loading times of images. This is ideal for delivering images of any size with low latency regardless of where the user is located. Push Zones are now seamlessly supporting Image Processing !

Hudi: Uber Engineering’s Incremental Processing Framework on Apache Hadoop

Uber Engineering

With the evolution of storage formats like Apache Parquet and Apache ORC and query engines like Presto and Apache Impala , the Hadoop ecosystem has the potential to become a general-purpose, unified serving layer for workloads that can tolerate latencies … The post Hudi: Uber Engineering’s Incremental Processing Framework on Apache Hadoop appeared first on Uber Engineering Blog.

Why Traditional Monitoring Isn’t Enough for Modern Web Applications

Dotcom-Montior

Websites are now more than just the storage and retrieval of information to present content to users. Network latency. Network Latency. Network latency can be affected due to. Website and web application technologies have grown tremendously over the years.

Optimize Citrix platform performance and user experience with a new extension (Preview)

Dynatrace

Therefore, it requires multidimensional and multidisciplinary monitoring: Infrastructure health —automatically monitor the compute, storage, and network resources available to the Citrix system to ensure a stable platform. ICA latency. Dynatrace news.

AMD EPYC Processors in Azure Virtual Machines

SQL Performance

Back on December 5, 2017, Microsoft announced that they were using AMD EPYC 7551 processors in their storage-optimized Lv2-Series virtual machines. They feature low latency, local NVMe storage that can directly leverage the 128 PCIe 3.0

Seamless offloading of web app computations from mobile device to edge clouds via HTML5 Web Worker migration

The Morning Paper

Edge servers are the middle ground – more compute power than a mobile device, but with latency of just a few ms. The client MWW combines these estimates with an estimate of the input/output transmission time (latency) to find the worker with the minimum overall execution latency.

HCI Performance testing made easy (Part 3)

n0derunner

As with traditional storage, applications are writing to a shared storage environment which is necessary to support VM movement. It is the shared storage that often causes performance issues for data bases which are otherwise separated across nodes.

Cache-Control for Civilians

CSS Wizardry

If, however, there wasn’t a new file on the server, we’ll bring back a 304 header, no new file, but an entire roundtrip of latency. We can completely cut out the overhead of a roundtrip of latency. This means no unnecessary roundtrips spent retrieving 304 responses, which potentially saves us a lot of latency on the critical path ( CSS blocks rendering ). On high latency connections, this saving could be tangible.

Cache 212

A case for managed and model-less inference serving

The Morning Paper

Making queries to an inference engine has many of the same throughput, latency, and cost considerations as making queries to a datastore, and more and more applications are coming to depend on such queries. A case for managed and model-less inference serving Yadwadkar et al., HotOS’19.

Testing MySQL 8.0.16 on Skylake with innodb_spin_wait_pause_multiplier

HammerDB

” and “as the PAUSE latency has been increased significantly, workloads that are sensitive to PAUSE latency will suffer some performance loss.” in the directory storage/innobase/ut the following section has UT_RELAX_CPU defined to call the PAUSE instruction on x86.

Act locally, connect globally with IoT and edge computing

All Things Distributed

Because these IoT devices are powered by microprocessors or microcontrollers that have limited processing power and memory, they often rely heavily on AWS and the cloud for processing, analytics, storage, and machine learning.

IoT 118

Stuff The Internet Says On Scalability For December 21st, 2018

High Scalability

Tim Bray : How to talk about [Serverless Latency] · To start with, don’t just say “I need 120ms.” Wake up! It's HighScalability time: Have a very scalable Xmas everyone! See you in the New Year. Do you like this sort of Stuff? Please support me on Patreon.

Get up to 300 new metrics out of the box with AWS supporting services (GA)

Dynatrace

AWS offers a broad set of global, cloud-based services including computing, storage, networking, Internet of Things (IoT), and many others. Amazon Simple Storage Service (S3). The example below visualizes average latency by API name and stage for a specific AWS API Gateway.

AWS 157

Fast key-value stores: an idea whose time has come and gone

The Morning Paper

Coupled with stateless application servers to execute business logic and a database-like system to provide persistent storage, they form a core component of popular data center service archictectures. This eliminates marshalling costs to reduce CPU usage, and eliminates network latency.

Cache 104

Characterizing, modeling, and benchmarking RocksDB key-value workloads at Facebook

The Morning Paper

This benchmark can synthetically generate more precise key-value queries that represent the reads and writes of key-value stores to the underlying storage system. It matters because RocksDB reads from storage in data blocks (e.g.

Get up to 300 new metrics out of the box with AWS supporting services (GA)

Dynatrace

AWS offers a broad set of global, cloud-based services including computing, storage, networking, Internet of Things (IoT), and many others. Amazon Simple Storage Service (S3). The example below visualizes average latency by API name and stage for a specific AWS API Gateway.

AWS 146

An empirical guide to the behavior and use of scalable persistent memory

The Morning Paper

higher latency and lower bandwidth)… We have found the actual behavior of Optane DIMMs to be more complicated and nuanced than the "slower, persistent DRAM" label would suggest. The read latency for Optane is 2x-3x higher than DRAM.

Learning a unified embedding for visual search at Pinterest

The Morning Paper

To make all this work at scale, two important additional features are the use of subsampling to ensure scalability across hundreds of thousands of classes, and a binarization module to reduce the storage costs and prediction latency.

Distributed Algorithms in NoSQL Databases

Highly Scalable

Historically, NoSQL paid a lot of attention to tradeoffs between consistency, fault-tolerance and performance to serve geographically distributed systems, low-latency or highly available applications. Read/Write latency. Read/Write requests are processes with a minimal latency.

The Future in Visual Computing: Research Challenges

ACM Sigarch

Each of these categories opens up challenging problems in AI/visual algorithms, high-density computing, bandwidth/latency, distributed systems. The tremendous growth in visual computing is fueled by the rapid increase in deployment of visual sensing (e.g.

Scalable MicroService Architecture

VoltDB

In these use cases, data processing usually has less than a 5 milliseconds latency budget. Application State Management and Data-Driven Decision Making. As the complexity of applications and systems increases, the size of the teams that work on these also increase.

Scalable MicroService Architecture

VoltDB

In these use cases, data processing usually has less than a 5 milliseconds latency budget. Application State Management and Data-Driven Decision Making. As the complexity of applications and systems increases, the size of the teams that work on these also increase.

Millions of tiny databases

The Morning Paper

It takes you through the thinking processes and engineering practices behind the design of a key part of the control plane for AWS Elastic Block Storage (EBS): the Physalia database that stores configuration information. Larger cells have better tolerance of tail latency (e.g.

Netflix at AWS re:Invent 2019

The Netflix TechBlog

4:45pm-5:45pm NFX 209 File system as a service at Netflix Kishore Kasi , Senior Software Engineer Abstract : As Netflix grows in original content creation, its need for storage is also increasing at a rapid pace. Netflix runs dozens of stateful services on AWS under strict sub-millisecond tail-latency requirements, which brings unique challenges.

AWS 100

Netflix at AWS re:Invent 2019

The Netflix TechBlog

4:45pm-5:45pm NFX 209 File system as a service at Netflix Kishore Kasi , Senior Software Engineer Abstract : As Netflix grows in original content creation, its need for storage is also increasing at a rapid pace. Netflix runs dozens of stateful services on AWS under strict sub-millisecond tail-latency requirements, which brings unique challenges.

AWS 100

Kubernetes for Big Data Workloads

Abhishek Tiwari

faster access to external storage and data locality (I/O, bandwidth). Storage provisioning. Storage options have been another big roadblock in porting data workloads on Kubernetes particularly for stateful data workloads like Zookeeper, Cassandra, etc.