Juggler targets on making the Linux kernel capable of handling extensively reordered TCP traffic by both lowering cpu utilization and avoiding Dupacks and retransmissions.

This project is initiated by Yilong Geng, Mohammad Alizadeh, Vimalkumar Jeyakumar and Abdul Kabbani.

Installation instructions

These instructions work for a Debian 9 system. The patch will be applied to Linux kernel 4.1.8.

To use juggler you need to compile your own patched kernel.

To start let's create a working directory.

mkdir juggler && cd juggler

From now on, most commands require root privileges, please become root.

To compile the kernel we will need a couple of dependencies:

apt install git fakeroot build-essential ncurses-dev xz-utils libssl-dev bc

Add stretch backports to your sources.list

echo "deb http://ftp.debian.org/debian stretch-backports main" >> /etc/apt/sources.list
apt update

and install kernel-package:

apt install kernel-package

Download the Linux kernel 4.1.8:

wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.1.8.tar.xz
tar -xf linux-4.1.8.tar.xz

Clone the juggler repository:

git clone https://github.com/hugombarreto/juggler.git

Apply the patch:

cd linux-4.1.8
cp -r juggler/linux-4.1/* .

Compile your patched kernel:

fakeroot make-kpkg --initrd --revision=1.0.juggler kernel_image kernel_headers -j $(nproc --all)

If the compilation completes successfully, you should have 2 brand new deb's in the upper dir. We will use dpkg to install them

cd ..
dpkg -i linux-headers-4.1.8_1.0.juggler_amd64.deb
dpkg -i linux-image-4.1.8_1.0.juggler_amd64.deb

Now you may reboot the system to use the new kernel. By default, the new kernel will be added to grub as an entry under advanced options. Make sure to select it when booting the system.

shutdown -r now

Check if you are using the new kernel:

uname -r

It should display 4.1.8.