Tootfinder

How Allegro reduced latency outliers by 82% by switching to #XFS:
https://blog.allegro.tech/2024/03/kafka-performance-analysis.html
"'Using a com…

Unlocking Kafka's Potential: Tackling Tail Latency with eBPF
At Allegro, we use Kafka as a backbone for asynchronous communication between microservices. With up to 300k messages published and 1M messages consumed every second, it is a key part of our infrastructure. A few months ago, in our main Kafka cluster, we noticed the following discrepancy: while median response times for produce requests were in single-digit milliseconds, the tail latency was much worse. Namely, the p99 latency was up to 1 second, and the p999 latency was up to 3 seconds. This w…

"'"Upstream [#Linux #kernel] deprecated the V4 format for #XFS with commit b96cb835[1]. […] #Fedora 40 wil…

Fedora and older XFS filesystem format V4
Upstream deprecated the V4 format for XFS with commit b96cb835 . With next year being the date that it defaults to unsupported (though can be enabled with a kernel config for a while still). As such, Fedora 40 will be the last release that supports these older XFS filesystems.…