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At GROSSWEBER we practice what we preach. We offer trainings for modern software technologies like Behavior Driven Development, Clean Code and Git. Our staff is fluent in a variety of languages, including English.

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Network Outages

Posted in General | Networking at Wednesday, 22 February 2006 23:00 W. Europe Standard Time

DSL ModemThis blog is hosted on a private server located in the lumber room of our apartment¹. Sites are served using a DSL link that's running at 3 Mbit/s downstream and 512 kbit/s upstream speed.

Two months ago we decided to upgrade to a new DSL2+ connection (DSL 16000) provided by Arcor. I ordered the upgrade on January 4th and today Arcor finally was able to switch speeds. I didn't expect any problems as the Arcor salesman (beware!) told me that the physical line is able to manage that speed. I expected the change to happen flawlessly like the last one. Alas, read how it took place:

As you know, DSL speed is limited by the distance from your telephone jack to the next network junction point set up by the telco company. Signals travelling from the router to the carrier's network and back are subject attenuation, which means they get weaker. A piece of hardware (DSL modem) is yet able to tell signals from noise if a certain signal-to-noise ratio is achieved. Attenuation is measured in Dezibel and has to be lower than 25 in our case. Arcor's technical support told me some minutes ago that this not the case for our line which has an attenuation of 27.25 dB.

The result of the bad line quality is that the internet connection remains up for about 20 minutes before Arcor disconnects us. I suspect this is due to numerous data errors they receive. The next login is only possible unless our server is restarted. Pretty neat! The tech folks at Arcor will bring us back online within 48 hours and the new DSL2+ connection will be downgraded to DSL 6000. This is not what I expected, especially since the upstream capabilities of DSL 16000 lie around 800 kbit/s as compared to DSL 6000's 640kbit/s.

Welcome to the world of DSL2+!

¹ I'm speaking of "us" here because I live in a shared appartment.

Now playing: Boozoo Bajou - Dust my Broom - Nine below zero

Google Workplaces

Posted in General at Sunday, 22 January 2006 13:33 W. Europe Standard Time

ABC News has posted a video giving an insight into Google workplaces. People seem to be happy there as meals and snacks are free. In the hall they've got a nifty traffic stats animation showing the overall Google traffic on earth.

Google Traffic

Copying Error Messages

Posted in General | Tools and Software | Windows at Friday, 06 January 2006 17:54 W. Europe Standard Time

Programs occasionally encounter errors with a message box popping up reporting the error to the user.

Error Message

Most times if the user can't figure out how to deal with the error it gets escalated via IM or e-mail to someone more experienced. The error descriptions I receive often lack details on what operation exactly caused the failure and the complete error message that has been presented. The latter is often due to laziness or simply by not knowing what is important about the error message. An "Access denied" error may contain further details on why access was not granted. There's a simple solution to this, both giving the supporter the opportunity to see the verbatim error message and relieving the user from typing it: Copy the error message using Ctrl+C.

The message box above yields the following text that could be pasted into an e-mail or your favorite IM:

---------------------------
Ordner kann nicht erstellt werden
---------------------------
Der Ordner "Neuer Ordner" konnte nicht erstellt werden.



Zugriff verweigert


---------------------------
OK
---------------------------

Now playing: Triola - Im Fünftonraum - Unland

A strange Google Error Message

Posted in General at Saturday, 29 October 2005 16:25 W. Europe Daylight Time

This is what Google tells me when I navigate to their start page (www.google.de):

Google Error Message

I'm pretty sure my system is clean as neither Microsoft AntiSpyware nor Ad-Aware reported spyware infections. Hopefully all other computers of our network are not infected as well.

Now playing: Oasis - Heathen Chemistry - (Probably) All in the mind

Neologisms, anyone?

Posted in Fun Stuff | General at Thursday, 20 October 2005 11:42 W. Europe Daylight Time

Splog stands for spam blog, a new method of spammers spreading their garbage around the web.

Now playing: Roxette - I wish I could fly

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