Jul 292017
 

With the release of kernel-xen version 4.9.40, I have enabled CONFIG_TCP_CONG_BBR. This adds support for using BBR to improve the throughput from your servers (mostly web servers) to your clients.

If you run my kernel-xen package on your Xen guests, you can also take advantage of this new feature.

To enable, ensure you are running kernel-xen version 4.9.40 or above, then create a file called /etc/sysctl.d/enable-bbr.conf containing:
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr

You can activate this by typing: $ sysctl -p

The changes will automatically apply at the next system boot.

To read more about BBR and why it makes such a difference, head on over to acmqueue for a far more in-depth analysis than I could provide.

Jun 022015
 

Well, hasn’t it been a long time since I’ve posted here!

Just a quick announcement that I’ve posted kernel 3.18.14-1 in the el6-testing repo with the aim to replace the current 3.14.x based kernels with 3.18.x.

Current testing shows a seemless upgrade and as of right now, no issues have been reported. As always, feedback is welcome!

Feb 082015
 

After a week of hard work, I’m happy to announce Xen 4.5.0 testing packages for both EL6 and EL7. These work on CentOS, Scientific Linux and RHEL.

Packages can be downloaded from:

  • EL6 – http://au1.mirror.crc.id.au/repo/el6-testing/
  • EL7 – http://au1.mirror.crc.id.au/repo/el7-testing/
  • Testing and feedback welcome – and as always, bug reports welcome.

    Mar 212013
     

    I figured that I should probably let people know that I am available to assist people with Xen installations / troubleshooting and support.

    My rates are currently $85AUD per hour with a minimum of 2 hours per support event. This can be paid using either PayPal or credit card.

    I support the packages I build, as well as their operation on RHEL6, CentOS 6 or Scientific Linux 6 (preferred).

    I also provide support contracts over a set timeframe – however these are negotiated per contract according to complexity.

    For further information, feel free to contact me via email: netwiz@crc.id.au