The Morning Paper

AUGUST 29, 2019

If you’re moving an OLAP workload to the cloud (AWS in the context of this paper), what DBMS setup should you go with? We focused on OLAP-oriented parallel data warehouse products available for AWS and restricted our attention to commercially available systems. Choosing a cloud DBMS: architectures and tradeoffs Tan et al.,

Architecture 76

Architecture Cloud Storage Serverless 76

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. Other EC2 instance types, such as C5 or M5, use the AWS Nitro Hypervisor. us on Centos and 0.68

Speed 40

Speed Java AWS Virtualization 40

The Morning Paper

MAY 28, 2019

We don’t talk about energy as often as we probably should on this blog, but it’s certainly true that our data centres and various IT systems consume an awful lot of it. The evaluation is performed using the MNIST dataset, since that has the most results available in the literature for comparison. ASPLOS’19.

Energy 52

Energy Hardware Efficiency Architecture 52

Percona

MAY 2, 2023

It also supports storing the backups on filesystem and AWS S3 buckets. root@ip-172-31-37-92 ~]# aws ec2 describe-snapshots --query "sort_by(Snapshots, &StartTime)[-1].{SnapshotId:SnapshotId,StartTime:StartTime}" There are several general methods to take the filesystem level backup, also known as physical backups. mongodb-27017.sock

Best Practices 52

Best Practices Database Storage Servers 52

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. Oracle have a similar useful page as well: the Linux to Oracle Solaris 11 comparison, as well as a [procedure] for migrating from Solaris to Linux. Hit Ctrl-C to end. ^C

Virtualization 76

Virtualization AWS Engineering Hardware 76

Smashing Magazine

JANUARY 11, 2021

Alternatively, you can also use: Addy Osmani’s Chrome UX Report Compare Tool , Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Estimated Input Latency tells us if we are hitting that threshold, and ideally, it should be below 50ms.

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 7, 2019

To get a good first impression of how your competitors perform, you can use Chrome UX Report ( CrUX , a ready-made RUM data set, video introduction by Ilya Grigorik), Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing).

Performance 104

Performance Cache Network Metrics 104

Smashing Magazine

JANUARY 6, 2020

Alternatively, you can also use Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Paddy Ganti’s script constructs two URLs (one normal and one blocking the ads), prompts the generation of a video comparison via WebPageTest and reports a delta.

Performance 145

Performance Cache Network Metrics 145