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Jesper Dangaard Brouer
Worked at Red Hat Software
Attended University of Copenhagen
Lives in Denmark
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Jesper Dangaard Brouer

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Finished my talk at #LinuxCon.
Thank +Drew Fustini​ for the pictures
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Well, if you know anybody doing real work with fq-codel on the dpdk, I am tired of not having data on it at 10Gige. And Have a great time at the SF and rock in roll museum, that is one of my favorite places in the universe!
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Jesper Dangaard Brouer

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Her op til valget er her en nyttig liste over mørklægningspolitikerne.
Disse politikere stemte for mørklægningsloven. den lov der stærkt begrænser pressens og borgernes indsigt i hvordan magten forvaltes.

I lige præcis dette tilfælde gælder åbenbart ikke den fortærskede
Hvis du ikke har noget at skjule, så har du ikke noget at frygte

Citat fra artiklen:
Ingen af disse mørklæggere fortjener at blive genvalgt

I mine øjne fortjener ingen af politikerne fra SF, R, V, K eller S der enten stemte for eller glemte at stemme imod Mørklægningsloven – at blive valgt igen til Folketinget.


#DKPOL   #FV15  
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BTW hvis du møder nogle af der "intet at skjule" folk, så bare spørg om du ikke må installere et webcam i deres soveværelse...
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Jesper Dangaard Brouer

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Found this old video of Stephen Hemminger explaining Bufferbloat
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We have open sourced the code of our #VBDb website, http://VBDb.itu.dk, under MIT license. This is a #JavaScript front-end for visualizing data coming from a #Bitbucket repository, https://bitbucket.org/modelsteam/vbdb in our case. This was developed by Tony Beltramelli, who did an awesome work having limited time and resources.

You can now fork and adapt it to fit your needs :-)
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Love the funny description of the kernel option for disabling legacy virtio PCI suppport (VIRTIO_PCI_LEGACY)... when to disable ... "look out into your driveway.  Do you have a flying car?"

Full quote:"
CONFIG_VIRTIO_PCI_LEGACY:

Virtio PCI Card 0.9.X Draft (circa 2014) and older device support.

This option enables building a transitional driver, supporting
both devices conforming to Virtio 1 specification, and legacy devices.
If disabled, you get a slightly smaller, non-transitional driver,
with no legacy compatibility.

So look out into your driveway.  Do you have a flying car?  If
so, you can happily disable this option and virtio will not
break.  Otherwise, leave it set.  Unless you're testing what
life will be like in The Future.
"

Looks like the indirect work of +Rusty Russell ... :-)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=46506da5f365efe
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Jesper Dangaard Brouer

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Excellent description of this cool concurrent data structure, really worth reading! :)
 
Learn more about our fast lock-free hash table.
Non-blocking data structures and their benefits often come at the cost of increased latency because they require additional complexity in the common case. There are plenty of exceptions to this if the requirements of the data structure are relaxed, such as supporting only a bounded level of ...
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Jesper Dangaard Brouer

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The Linux Vendor Firmware Project needs 15 minutes of your time. Thanks, and please reshare.
I spend a lot of my day working on framework software for other programs to use. I enjoy this plumbing, and Red Hat gives me all the time I need to properly design and build these tricky infrastructure-type projects. Sometimes, just one person isn't enough. For the LVFS project, I need vendors ...
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Jesper Dangaard Brouer

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Så er det officielt, staten indrømmer at alle danskere bliver overvåget!
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Så kom indrømmelsen: Forsvarets Efterretningstjeneste overvåger dig døgnet rundt.
https://medium.com/@r4nd4hl/mellem-os-to-og-staten-b6eb682c7b2f
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Forsvarets Efterretningstjeneste indrømmer massiv overvågning af alle danskere.
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Jesper Dangaard Brouer

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Finally, there is a easy-to-use browser based speedtest that also
measures bufferbloat:

 http://www.dslreports.com/speedtest

After you run the test, click the green "Results + Share" button to see more detailed information.  Which will contain a graph with "Ping response under load", which will indicate if you have bufferbloat on your link.

There is also an article about it here:  http://www.internetsociety.org/blog/tech-matters/2015/04/measure-your-bufferbloat-new-browser-based-tool-dslreports

Go share with the world :-)
Use our NEW speed test tool to test how fast your broadband or mobile internet connection really is. Read broadband news, information and join our community
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I highly recommend watching my colleague +Hannes Frederic Sowa  tutorial on advanced perf tricks!
 - Title: "Tutorial on perf Usage"
 - Video: https://www.youtube.com/watch?v=W0gtG67GUIw
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Indeed, one of the best I've seen.
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Have him in circles
596 people
Judith Dempsey's profile photo
Martin Damgaard Lorensen's profile photo
Udhaya sporty's profile photo
Tom Wang's profile photo
Su Allen's profile photo
Rajeev P's profile photo
Artem Popov's profile photo
Allan Beaufour's profile photo
Joey Wong's profile photo
Education
  • University of Copenhagen
    Computer science, 2005
Basic Information
Gender
Male
Story
Tagline
Linux Kernel Developer in the network area, with a passion for scalability and performance
Work
Occupation
Linux Kernel Developer
Employment
  • Red Hat Software
    Senior Software Engineer
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Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Denmark
Previously
Copenhagen - Montreal - Auckland