> In this page

News
About me
Friends & family
External links
Contacts

> Quick links

Projects I'm working on
Some of my hobbies
A few articles I wrote
Rant Of The Day
HAProxy : pet project
Linux Kernel
Exosec : my job
Exceliance : my job too
Old site
Traffic around Paris

> Software News

Inject CD-2.6 20071218
Inject CD 20070808
Rescue CD 20070808
HAProxy 1.3.15.2 (dev)
HAProxy 1.2.18 (stable)
Linux 2.4.36.6 (stable)
HTTPTerm 1.1.1
Inject 29

> Site search

 
Web 1wt.eu

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> News

-- Oct 9th, 2008
Last week, the Netfilter Workshop 2008 took place in Paris. The event, whom EXOSEC was one of the sponsors, was organized by the french company INL. I attended the first day and was invited to the dinner on the barge the next day. It was the opportunity for me to meet several nice people I've been working with through e-mail for a few years, and to share thoughts with other really cool ones. Oh and it reminded me that my practice of English is too scarce. Thank you guys and kudos to the organizers who did an awesome job and did not have much sleep that week!

-- July 13th, 2008
Just bought an AMD Phenom X4 9950 (2.6 GHz) for network testing with haproxy. That's been a troublesome experience, I even thought the CPU died. More info on the Rant Of The Day page.

-- June 7th, 2008

Some people have been reporting to me that my web site sometimes did not respond. I think I finally found the root cause as I caught the culprit in action yesterday evening. My switch had 4 dead capacitors, causing it to randomly fail to transmit traffic, and even to maintain the server's link up. I replaced all them 4 and now it's working fine again.

-- Jan 8th, 2008
I've added a new section to this site : The Rant Of The Day, on which I complain about things that drive me nuts.

-- Dec 29th, 2007
I've put online two new articles explaining How to build a cheap UPS for PC Engines ALIX and How to connect a capacitor to power the RTC clock on a PC Engines ALIX.

> About me

My name is Willy Tarreau, I'm 33. I'm french, and I live in France at Châtillon. I'm a co-founder of EXOSEC which we started with Christophe Pouillet and Benoit Dolez in 2002 in order to provide managed security and high level auditing services to our customers. We have also created Exceliance whose goal is to design Linux-based specific appliances dedicated to security, performance and monitoring. Today, my work mostly consists in designing and auditing robust and scalable hosting infrastructures. This has led me to develop the HAProxy load balancer, which is used in several large infrastructures with high level of demand concerning availability, performance and security.

Since August 2006, I've become the new Linux Kernel 2.4 maintainer. I discovered Linux somewhat late, in 1994, when I was a student at the Magistère d'Informatique Appliquée de l'Ile de France (MIAIF). I started with SLS, a floppy-based distribution shipped with an unreliable kernel 1.0. I quickly understood that it would be much more fun to hack on this than it had been on DOS till then.

With a few buddies, we created the MIAIF web site of which I became the admin. I started hacking on the kernel to provide IDE hotplug to our poor server which had to reboot very often when we inserted our removable IDE racks (there was no USB at this time). I quickly liked hacking the kernel, in part because it was easy by then (only about 200k lines of code in 1.2.13). Since then, I got used to maintain my own tree with a lot of patches.

In 2001, with Benoit Dolez, we created our own distribution, Formilux, that we're still heavily relying on at Exosec. Its goal was to be very small, fast and robust. To achieve this, I merged even more patches in my kernels (2.2 then 2.4). I finally proposed Marcelo Tosatti to help him by maintaining a stable branch in parallel to his work (the hotfix tree). Late in 2005, he offered me to progressively take his place. We finally agreed that I would take over his task after 2.4.33 would be released.

> Friends & family

> Various links

> Contacts

  • Main site in IPv4 : http://1wt.eu/ : for those who went here via IPv6 :-)
  • Main site in IPv6 : http://www6.1wt.eu/ : Interesting for those who want to test their IPv6 connectivity. Being connected via Nerim, I have native IPv6 connectivity with a /48 netmask, allowing up to 65536 public networks at home ! If you see a green square here ⇒   , then it should be OK for you.
  • Main site in FTP : ftp://ftp.1wt.eu/ : The site is also accessible via FTP, which makes it easier to download numerous files (patches, etc...).
  • This site can be reached at those URLs :
  • Contact me : Willy TARREAU