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Cache-Control for Civilians

CSS Wizardry

To this end, having a solid caching strategy can make all the difference for your visitors. ?? How is your knowledge of caching and Cache-Control headers? That being said, more and more often in my work I see lots of opportunities being left on the table through unconsidered or even completely overlooked caching practices.

Cache 264
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The Return of the Frame Pointers

Brendan Gregg

This technique saves two instructions in the prologue and epilogue and makes one additional general-purpose register (%rbp) available." Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway.

Java 145
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How To Add eBPF Observability To Your Product

Brendan Gregg

cachestat File system cache statistics line charts. 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. BPF didn't exist on those versions, so I used basic Ftrace capabilities that were available on Linux 3.2.

Latency 145
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Minimal Logging with INSERT…SELECT into Empty Clustered Tables

SQL Performance

Without this guarantee, SQL Server might add index rows that are not sorted correctly, which would not be good. For INSERT.SELECT , SQL Server makes its own determination whether to ensure rows are presented to the Clustered Index Insert operator in key order or not. DMLRequestSort Conditions.

Cache 67
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AMD EPYC Processors in Azure Virtual Machines

SQL Performance

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. The L3 cache size is 64MB. The L3 cache size is 64MB.

Azure 42
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MariaDB vs MySQL: Key Differences and Use Cases

Percona

In this blog, we’ll provide a comparison between MariaDB vs. MySQL (including Percona Server for MySQL ). Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process.

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The Performance Inequality Gap, 2021

Alex Russell

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Modern network performance and availability. mid-priced Androids were slightly faster than 2014's iPhone 6. The Moto G4 , for example. Here begins our 2021 adventure. Hard Reset.