Skip to content
Sudonix

Avoid network traffic jam with BBR

Linux
2 2 893 1
  • DownPWundefined

    From time to time, here or there, we see subjects flourish on an abnormally limited speed in FTP.
    To overcome this kind of slowdown, simply activate the TCP BBR protocol

    Without going into details, this protocol makes it possible to make better use of the bandwidth available during the exchange of TCP packets. Created by Google, you can find more information here.

    Integrated into the Linux Kernel since version 4.9, all you have to do to activate it is to edit the kernel parameters (/etc/sysctl.conf) and add :

    net.ipv4.tcp_congestion_control = bbr
net.core.default_qdisc = fq

    A TCP command acting in both IPv4 and v6,

    save and load with :

    sudo sysctl -p

    And we go from a restricted FTP speed
    crazy 🙂

    If you are under Proxmox or ESXi, this must be done both on the host and in the VM/CT.

    PW and WS Spirit alive

    1
  • DownPWundefined DownPW marked this topic as a regular topic on
  • DownPWundefined DownPW

    From time to time, here or there, we see subjects flourish on an abnormally limited speed in FTP.
    To overcome this kind of slowdown, simply activate the TCP BBR protocol

    Without going into details, this protocol makes it possible to make better use of the bandwidth available during the exchange of TCP packets. Created by Google, you can find more information here.

    Integrated into the Linux Kernel since version 4.9, all you have to do to activate it is to edit the kernel parameters (/etc/sysctl.conf) and add :

    net.ipv4.tcp_congestion_control = bbr
net.core.default_qdisc = fq

    A TCP command acting in both IPv4 and v6,

    save and load with :

    sudo sysctl -p

    And we go from a restricted FTP speed
    crazy 🙂

    If you are under Proxmox or ESXi, this must be done both on the host and in the VM/CT.

    phenomlabundefined

    @DownPW interesting. Does this have any effect on data transfers over SCP

    Mark – Founder, Phenomlab Ltd
    Executive IT & Security Leadership
    Phenomlab Ltd

    0
Log in to reply

Related Topics
  • Madchatthewundefined

    To the Window to the Linux . . .

    Pinned Linux arch linux windows endoflife
    22
    19 Votes
    22 Posts
    3k Views
    Madchatthewundefined
    @phenomlab said: @Madchatthew ouch. Sounds nasty. Did you get to the bottom of why it happened? I believe it is due to not everything getting upgraded because i wasn’t checking on the different packages I had installed from the AUR. Then when I ran yay it was like, hey would you like to update all of these things that you haven’t updated in months, perhaps years or ever for that matter and I was like yes please If you don’t have yay there are no notifications that you need more updates than what you realize. Chrome was staying updated because it would give me a notification, but there was the nvidia package that needed to be upgraded as well and I had never upgraded it. I didn’t realize it and should have. Then some of those packages use cmake and that needed to be updated as well. So using yay is beneficial to make sure you get all the updates you need.
  • abcabc123undefined

    Ubuntu 22.04 to Ubuntu 24.04 Unable to ping

    Locked Unsolved Linux ubuntu
    37
    3 Votes
    37 Posts
    6k Views
    abcabc123undefined
    Okay, you have time, let me know
  • Madchatthewundefined

    Linux on a Stick

    Linux linux usb arch
    29
    16 Votes
    29 Posts
    4k Views
    Madchatthewundefined
    @DownPW I haven’t tried either of those, I am sure they run fast as well. Linux is so versatile it is awesome!
  • Madchatthewundefined

    Linux Certification

    Linux linux certs
    4
    2 Votes
    4 Posts
    834 Views
    phenomlabundefined
    @Madchatthew You might be sorry you asked This is the mentoring category below. Presently, it’s unused, but we have a dedicated area for it. https://sudonix.org/category/8/mentoring Other services https://sudonix.org/services
  • Madchatthewundefined

    Arch Linux + Me = Crazy

    Linux arch linux web server vps
    10
    0 Votes
    10 Posts
    1k Views
    phenomlabundefined
    @Madchatthew hmm, yes, that might be problematic.
  • DownPWundefined

    Tutorial for secure emailing with personal domain,Cloudflare, virtualmin and postfix

    Unsolved Linux dns mail cloudflare virtualmin postfix
    30
    3 Votes
    30 Posts
    5k Views
    phenomlabundefined
    @DownPW any update?
  • cagatayundefined

    Ubuntu Upgrade All Packages

    Solved Linux mangodb sudonix
    3
    3 Votes
    3 Posts
    906 Views
    cagatayundefined
    @phenomlab Upgraded, everything works
  • phenomlabundefined

    Testing out Webdock.io

    Moved Announcements webdock recovery speed
    2
    5
    5 Votes
    2 Posts
    1k Views
    phenomlabundefined
    Just coming back to this thread for review (as I often do), and it looks like Webdock have increased their available offerings - some are extremely powerful, yet very competitive from the pricing perspective. [image: 1692559685163-7cf9a928-ac21-44fe-99c6-90439030d631-image.png] 10 CPU cores, plus 20Gb RAM? Well worth a look (and the asking price) - there’s also a fixed IP which is hugely beneficial. Clearly, this is well beyond what most people will want to spend - it’s more of an example (but interestingly, Sudonix runs on something not too different from the above). However, not all that glitters is gold - just have a walk through the benchmark report I found below and you’ll see a huge difference between Heztner and Webdock https://www.vpsbenchmarks.com/compare/hetzner_vs_webdock That being said, the amount of HTTP requests that Webdock handles in relation to Hetzner is superior - @DownPW you might want to have a look at this - there’s a free 24 hour trial… [image: 1692560710486-5203639b-2f62-47e6-b87b-37580ce5deae-image.png]