Thursday, September 25, 2008

GCaP Training: A Rock-solid Investment

Looking for a rock-solid investment during the financial meltdown? Seats are still available for the next Guerrilla Capacity Planning class, which will be held in November at our Larkspur Landing location.

Entrance Larkspur Landing hotel Pleasanton California
Click on the image for details.

For those of you coming from international locations, here is a table of current exchange rates. We look forward to seeing all of you in November!

Thursday, September 18, 2008

My CMG 2008 Presentations

  1. Sunday Workshop: "How High Will It Fly? Predicting Scalability"
    Session 184, Sunday 8:30 AM - Noon
    Room: Champagne 3/4

Wednesday, September 10, 2008

Logjam at the London Stock Exchange

Guerrilla Graduate Paul P., sent me this WSJ bit on the recent 7-hour outage at the LSE, with the remark: "This kind of outage is a big, big deal in my world." This is the second technical failure at the LSE in 2008. The article points at capacity problems:
"Traders experienced problems connecting to TradElect, a 15-month-old proprietary LSE platform developed with Microsoft Corp. technology that the LSE has touted as allowing it to expand and speed up its capacity for trades."

"By early afternoon, the LSE was informally telling customers that its system would be back online. That appears to have created a logjam as customers tried to reconnect at the same time."

This is almost a replica of a problem described by my colleague Steve Jenkin in our 2006 CMG-Australia paper:
"That load was completely disabled to improve system throughput for the most interesting capacity planning period on the busiest day. This scheduling was mandated by the Secure Hosting Facility after a software fault caused a flood of more than 6,000 emails to be issued after a multi-day stoppage. Such an email flood, containing several days of traffic in 10 minutes, brought the facility mail system to its knees ..."

Some things ...

Friday, September 5, 2008

Google Chrome: Does It Shine?

The envelope please!

This early review indicates the luster is already off Chrome, due to some serious performance issues related to the Adobe Flash plug-in being a CPU hog. Unlike FireFox, there's no workaround.

Thursday, September 4, 2008

Best Practices

The Guerrilla Manual advises: Best practices are an admission of failure (last item in Section 1). As Wittgenstein said: "Just because we all agree on something, doesn't make it right."

Guerrilla graduate Scott J., sent me the following cartoon by Scott Adams, which offers a Dilbert profundity on the same topic.

For me, the punch line IS the 2nd frame. You may need to click on the strip to see the Dilbert punch line in the 3rd frame.

Wednesday, September 3, 2008

Scalability Workshop in Melbourne, Australia

NICTA is offering a 2-day workshop entitled:
Application Scalability By The Numbers
given by yours truly in Melbourne, Nov 5-6, 2008.

If you're in the area, you might also pass this on to other interested colleagues and otherwise contact Anne-Marie Eliseo at or phone: +61-8-8302-3928 for more details. They are trying to figure out if they should run it in Sydney as well. Your feedback could help them.