Should anyone ask, I’ve been doing lots of swimming training

I am currently training at the former Olympic pool in Munich.  It’s about 5km from home and takes 10 minutes by bike to reach.  It’s made up of 2 Olympic sized pools (1 for warming up with only 4 lanes and 1 for competition with 8 lanes), a dive arena, and a great shower, sauna, changing complex.  Never too busy and the people that train there are quite friendly.  Recommended if you feel like swimming.On Friday a free-diving class takes place.  Robin has the details if you feel like attending.

Should anyone ask, I served 2 mistresses

A friend’s message about going up to Berlin to see an opera reminded me of my first Opera in Berlin. I’ve been searching to try and remember which one it was. It took place around the start of July 2004 when I’d been studying

German for a grand total of 1 week. It could have been “Die Entführung aus dem Serail.” What I do remember was that I was blown away by the visual quality of the production. The performance was a wonderful introduction to my love affair with Berlin and Germany.

Alas, now I’ve given myself away as serving two mistresses: so please don’t tell London. I still have strong feelings for the city. Mostly good and the bad ones are reserved for the politicians who have spent so
little supporting the infrastructure that makes London a liveable metropolis. Like the Tube that is desperate need of an upgrade. But for now I will talk about the good. I’ve spent 10 years of my life in the heart of the city: Soho, Barbican, Madia Vale and in a loft on Clink Street overlooking the Thames.

As a child coming from a small conservative suburb in South Africa, my love affair with London was instant – I remember writing a letter (probably my last postal letter ever written) to the Mayor of the City saying how much I liked it (I still have his response filed away somewhere). It was where I wanted to stay forever. Soon after I arrived, I set up my own business doing web-design and ran that for 2 years. I partied every weekend, lived the London music scene, and was of the firm belief that should I ever venture outside zone 6 of the Underground I should have a passport with me. I was not British. I was a Londoner.

At the time I was really interested in architecture and London, with it’s combination of old and “new British architecture” sated my cravings for design. Most of all though, it was the people that I knew then that made the place so much fun. But people change and my priorities changed. When I go back it’s to another city. Not the one that I fell in love with. That’s not to say that I don’t have feelings for London and won’t move back there at some point. It’s a perfect place for business. Which other city is so international that within the first minute of conversation, “Where are you from?” inevitably comes up? How I miss meeting people with such a worldly perspective in my current location.

I moved away from London because I wanted to know that it really was the best city for me. I appreciated my time in San Francisco putting this theory to the test and when I moved back to London, I was convinced, it was the best. But San Francisco has sown the seeds of doubt over my London convictions. Sure London had a social scene that suited me better but the weather elsewhere could be better. And my 4 years in San Francisco had shown me that it was possible, indeed not too difficult, to live elsewhere. Adding a foreign language for extra credit, and I was putting this to the test after being back in London for only 2 years. I moved to Munich, via Berlin.

Like a broken up couple after a long romance, I still visit London regularly. We are still good friends. But a trip is not the same as the timelessness of an infinite number of weekends together that one gets from living in a place. I go back and have to hurry to catch up with old acquaintance and often will not tell others that I’m there should
they expect a 30 minute rushed chit chat that adds nothing to a friendship. It’s always nice traipsing around old haunts and seeing how they have changed. It’s nice seeing the new architecture and latest music and art. But I’ve changed and new “international” people have moved into London and old “international” friends have moved onward to
test out new cities for themselves.

So yes, I still love London, just in a different way.

Sould anyone ask, there’s nothing like directory enquiries.

My day started out with me calling to wish a friend happy birthday.  Except that it wasn’t and only takes place on Saturday.  Instead we ranted for 30 minutes about how bad the mobile phone carriers are, the problems of having to work with them and so on.  We even had a go at various directory enquiry services and how difficult it is to determine the costs of calling each one.  I shouldn’t have been so hasty in my criticism of them.After 8 years of loosing contact with a good friend, I spent some time googling her.  I’d lost her contact details but remembered which borough of London she lived in. It felt weird to be searching on someone after all this time. She does PR and her name was on a couple of press releases but no longer worked at the companies involved.  I could have tracked her down in 2 minutes had I realised that some people still list their phone numbers.

My heavily criticised directory enquiry site revealed her number and her address in no time, and I’m looking forward to having coffee with an old friend next time I am in London.Sometimes old school technology is best.

Should anyone ask, I prefer my traffic to be “shaped”

I’m having much success with my traffic shaping rules. I prioritise my outbound traffic and graph it. Traffic is currently sorted into the following classes:

  • Leaf 10: VOIP
  • Leaf 20: ACKs, ICMP
  • Leaf 30: DNS, SSH (not scp)
  • Leaf 40: Streaming audio
  • Leaf 50: Web, SMTP, IMAP
  • Leaf 60: SCP
  • Leaf 70: Bulk, P2P, unclassified packets

This works out well:

Here the red line show’s an outbound voip call, an ongoing rsync via ssh (purple) and some random person accessing website in light green. The light blue shows a bittorrent download.

Each of these classes is subordinate to the other although each can only max out to 90% of the link before having to start sharing the link with subordinate classes.

Even if I had a T1/E1 entering my house, I’d still shape it. Shaping really enhances the responsiveness when using a congested link.

My shaping rules are downloadable and graphed. I also graph general traffic.

Should anyone ask, bunker filters lots of spam

Spammers are turning to image spam to avoid filters.  The introduction of grey-listing has dramatically reduced imaginator.com spam but in the end spam protection is a never ending arms race – until someone comes up with a new way to do email.  And that ain’t happening any time soon.I’ve been graphing bunker’s mail statistics. The mail server is rejecting up to 40 messages a minute, and that’s before they even hit the spam filter, the virus filter, a content filter and finally get accepted for delivery.  So the odd one that gets through has had to pass lots of tests. Consider it special…

Should anyone ask, it’s time for a new look at networking

A New Way to look at Networking is the name of an interesting talk given by Van Jacoson Van Jacobson is a Research Fellow at PARC. Prior to that he was Chief Scientist and co-founder of Packet Design. Prior to that he was Chief Scientist at Cisco. Prior to that he was head of the Network Research group at Lawrence Berkeley National Laboratory. He’s been studying networking since 1969. He still hopes that someday something will start to make sense.

He gives an interesting critique of TCP/IP today and suggests how it is broken and can be fixed.

Link here