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Hisao Tanabe
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Hisao Tanabe

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TCP Tips and Tricks - What Makes Applications Slow? - Sharkfest 2016 (by Chris Greer)
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Hisao Tanabe

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Linux 4.6 is out

Full details on http://kernelnewbies.org/Linux_4.6

Already using it in Free Electrons embedded Linux training sessions (http://free-electrons.com/training/embedded-linux/)!
Summary of the changes and new features merged in the Linux kernel during the 4.6 development cycle
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Hisao Tanabe

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The 2016 Linux Storage, Filesystem, and Memory-Management Summit was held April 18 and 19 in Raleigh, North Carolina, USA. On the order of 100 developers representing those subsystems discussed a wide range of highly technical topics. LWN was there, resulting in the following reports.
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Hisao Tanabe

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Quick kernel hacking with QEMU + buildroot
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We'll see exactly how it's going to work tomorrow. Here's what we think we know today.
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This document records current best practice for using all versions of HTTP over TCP.
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Hey there from the future! How's that kernel your testing doing? Good? That's great!

A quick reminder, while everything is going so well:

Go into menuconfig -> Kernel hacking -> Memory Debugging and turn on DEBUG_PAGEALLOC and CONFIG_DEBUG_SLAB

Because when you eventually do get a bug report about something that looks like a memory handling bug, the last thing you want to do is have to chase and solve a number of other unrelated memory bugs just to figure out whats going on with the problem people are actually hitting.

(Also, while we're doling out advice from the future: Make sure you get checked out for carpenter ants before you put up new siding.)
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"As network speeds continue to increase from 10Gbit/s, to 40Gbit/s, and very soon to 100Gbit/s the rate at which packets can arrive increases, and as a result the amount of of time to process packets decreases to as little as 6.7ns per packet at 100Gbit/s.
This talk explains the challenges the kernel network stack is facing, and describe some strategies and mitigation techniques to handle these increasing network speeds.
Recent improvement to the TX layer will be explained, but it cannot standalone. Further improvements to the RX layer and qdisc layer are still needed.
The memory subsystem is also pressured to its limits, and plumbering and cooperation between networking and MM (Memory Management) kernel developers are needed. "
Slides for this +DevConf.cz 2016 talk from +Jesper Dangaard Brouer: http://people.netfilter.org/hawk/presentations/devconf2016/net_stack_challenges_100G_Feb2016.pdf
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