Jesper D. Brouer

Linux Kernel Developer at Red Hat, XDP kernel maintainer, behind

[Matt Fleming @fleming_matt]

Me and ⁦@JesperBrouer⁩ wrote a blog post on the kernel’s BPF LPM trie implementation and cover some of the performance gotchas with the current code. https://t.co/Yg9rd10JtF

[Jesper D. Brouer @JesperBrouer]

Awesome blogpost/talk + tool by @bristot :
Linux scheduling latency debug and analysis
https://t.co/CxOYUbOWQv
Let's us look into the "blackbox" of Linux sched latency!😃

[majek04 @majek04]

Fascinating discussion about raw sockets aka ETH_P_ALL
https://t.co/KFZFJNNlAf

The theory is that any socket AF_PACKET ETH_P_ALL socket also catches TX packets, working against TX zerocopy.

[Joseph Hofmann @packetbouncer]

New year, new spikes - XDP with Mellanox 100G NICs does pretty good since we took it in prod🙂

[Brendan Gregg @brendangregg]

Netflix/Intel working together to find low-level PMC-based perf wins in the cloud (by my colleagues Vadim and Harshad) https://t.co/tYeYncfo2v

[Sidsel Jensen @Purple0x]

@JesperBrouer Thanks for telling us about all the cool stuff eBPF can be used for 👍🏻 #DrivingIT22

[IDA IT @IDAITDK]

@RedHat funny feature to why you should use eBPF to unlock the potential of your Linux kernel 😉🙌🏼
#DrivingIT22

[Sidsel Jensen @Purple0x]

@toke_dk is telling us about decreasing latency #DrivingIT22

[P99CONF @P99CONF]

Next up at #P99CONF: @TalawahTech uses an HTTP benchmark to compare the performance of the #Linux kernel networking stack with userspace networking doing kernel bypass via DPDK. Grab your seat here: https://t.co/xog1f4gEzy #ScyllaDB

[Pavel Odintsov @odintsov_pavel]

I'm very happy to introduce FastNetMon Community 1.2.3. This release includes a completely new network packet parser and XDP support. You may find the full list of changes here: https://t.co/ACD3AFj93i Installation: https://t.co/G4GCeJfNDa

[Cilium @ciliumproject]

Switching to Cilium Layer 4 Load Balancer XDP allowed @seznam_cz to drastically reduce their CPU consumption and increase performance

Learn how in the video from @eBPFsummit

https://t.co/xVZRTVvZJz

[Richard Johnson @richinseattle]

To achieve optimal speed and size of eBPF programs, use the latest version of the eBPF instruction set. By default llvm sticks to v1 which is non-optimal for most cases. pass -mcpu=probe to llc to auto-select latest instruction set supported by your kernel
https://t.co/4KVyrwC2TF

[Jesper D. Brouer @JesperBrouer]

@omsandov Idea: Identify if memory address comes from a page_pool

[Cilium @ciliumproject]

This Friday @lizrice and @dave_tucker will be exploring bpfd which is a framework for running BPF tracers with rules on Linux as a daemon that is container aware

eBPF & Cilium Office Hours
Friday, 14th October - 9am ET / 3pm CEST
Livestream: https://t.co/2UWO6xKkuG

[Dave Taht blog.cerowrt.org @mtaht]

One of the most fun videos about #bufferbloat #openwrt and #sqm I've *ever seen*. I am a huge fan of the right to repair also. Yay! @toke_dk @dsearls @doctorow @JimGettys @jlivingood

[Joseph Hofmann @packetbouncer]

After a long wait, the first XDP based DDoS-Filter has landed in Frankfurt - throughout the week, all in! :)

[eBPF Summit @eBPFsummit]

Wondering how eBPF is changing edge computing? Come listen to @toke_dk from @RedHat explain how

[Joseph Hofmann @packetbouncer]

Almost 2 days ago, we went live with our steaming new XDP Anti-DDoS approach at our partner @globedatacenter - nice to see it in action eating 85mpps, after months of hard development work 😃

[David Godfather Miller @davem_dokebi]

Xdp hints...