MachMetrics

JUNE 16, 2020

In a vacuum, an SSL certificate does add some additional latency, as it requires 2 extra round trips to establish a secure connection before sending any data to the browser. Secondly, SSL/HTTPS unlocks additional web performance benefits that more than make up for the added latency. To be completely honest, you almost have to use it.

Speed 86

Speed Latency Google Website 86

SQL Performance

APRIL 8, 2019

These VMs are not available in all regions, so you will want to check the availability in the Azure region that you are interested in using. These AMD EPYC processors have a number of advantages for SQL Server workloads, as I will explain in this article. Since then, Microsoft has changed the naming of this series to Lsv2.

Azure 42

Azure Virtualization Storage Benchmarking 42

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you time time?

Speed 52

Speed Java AWS Virtualization 52

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. How would you _time_ time?

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

JULY 2, 2021

biolatency Disk I/O latency histogram heat map 5. runqlat CPU scheduler latency heat map 10. The architecture is: While the bpftrace binary is installed on all the target systems, the bpftrace tools (text files) live on a web server and are pushed out when needed. execsnoop New processes (via exec(2)) table 2. at the time.

Open Source 40

Open Source Latency Cache Energy 40

KeyCDN

JUNE 20, 2019

50% off) Free shipping Buy 1 get 1 Free, just pay shipping Free bonus included with every purchase Scarcity tactics can also be employed if you’re running a promotion for a limited time or you only have a certain amount of stock available for a specific item. This reduces latency and speeds up your website.

Ecommerce 41

Ecommerce Speed Website Mobile 41

Brendan Gregg

AUGUST 8, 2017

And here's an excerpt from [Linux] today (include/linux/sched/loadavg.h): #define EXP_1 1884 /* 1/exp(5sec/1min) as fixed-point */ #define EXP_5 2014 /* 1/exp(5sec/5min) */ #define EXP_15 2037 /* 1/exp(5sec/15min) */. It's time in some cgroup paths, but this server is not doing much disk I/O. My search was starting to feel cursed.

Latency 111

Latency Metrics C++ Systems 111

Alex Russell

MARCH 6, 2021

Devices and networks have evolved too: Alex Russell @slightlylate An update on mobile CPUs and the Performance Inequality Gap: Mid-tier Android devices (~$300) now get the single-core performance of a 2014 iPhone and the multi-core perf of a 2015 iPhone. Modern network performance and availability. Here begins our 2021 adventure.

Performance 124

Performance Network Cache Metrics 124

Brendan Gregg

SEPTEMBER 5, 2017

What follows are topics that may be of interest to anyone looking to migrate their systems and skillset: scan these to find topics that interest you. ## ZFS ZFS is available for Linux via the [zfsonlinux] and [OpenZFS] projects, and more recently was included in Canonical's Ubuntu Linux distribution: Ubuntu Xenial 16.04 LTS (April 2016).

Virtualization 76

Virtualization AWS Engineering Hardware 76

All Things Distributed

APRIL 4, 2017

The new AWS EU (Stockholm) Region will have three Availability Zones and will be ready for customers to use in 2018. As a result, we have opened 42 Availability Zones across 16 AWS Regions worldwide. This enables customers to serve content to their end users with low latency, giving them the best application experience.

AWS 116

AWS Airlines Latency Games 116

All Things Distributed

OCTOBER 25, 2018

The new AWS Africa (Cape Town) Region will have three Availability Zones and provide lower latency to end users across Sub-Saharan Africa. We already have 55 Availability Zones across 19 infrastructure regions that customers can use today. What would have taken two weeks on local servers now only takes a few minutes.

AWS 167

AWS Cloud Education Programming 167

Abhishek Tiwari

NOVEMBER 3, 2018

If you put your whole website on CDN, technically you don’t need a large number of server infrastructure and CMS licenses. Using CDN for the whole website, you can offload most of the website traffic to your CDN which will handle not only large traffic spikes but also reduce the latency of content delivery.

Systems 63

Systems Cache Website Network 63