Today I lost a lot of time diagnosing a problematic Visifire Silverlight chart. If you own 3.X version of the visifirechart and you experience some Chart to completely hung the browser you should update to the 4.x version, as described in this article.

I’ve found it after a couple of hour of diagnosing why the page hung, actually I hit two of the bug, the last one that makes chart crash when dataseries was empty, and the first one.

• Chart was crashing when only one DataPoint was present inside the series with larger YValue.

God only knows why the chart should hang with only one value and large Y value .

Gian Maria.

I’ve just uploaded to SlideShare a presentation created with Metro Interface in mind. It is a draft on a presentation for a course on Unit Testing and I wanted to spend some time to design it to resemble a Metro interface, because I liked it really much .

Feel free to give me any comments/suggestion/critics on the appearance of the slide, and feel free to use it as a base for your presentation if you liked the appearance.

Gian Maria.

I used to be a hardware enthusiast in the past, I start overclocking PC in the old day of 486, and I loved to tweak my system to squeeze out the most I can. After lots of years are passed, I have no time to follow overclocking forum, and I do not want to risk system stability to have a little increase in performance.

In the last post I show the benchmark for all of my disks units, and after the benchmark I got a suggestion of running the Intel Solid State Drive Toolbox to verify that my settings makes my ssd disk operates at maximum speed.

It tells me to disable Superfetch/Prefetch o_O

After telling the toolbox to change all settings for optimum performance I pass from this score

To this one

I ran the test several times, and the result are consistent, actually I have a good improvement in sequential and 512k tests.

The old days when tweaking your hardware requires a good knowledge of what you are doing are gone in these days you can simply fire a tool, asking him to do optimization for you, and you got better performance for almost free.

Gian Maria

I love Fast Hard Disks and in the last month I bought an SSD and a replacement 2TB disk for my Virtual Machine disk that failed last week. Today I wanted to do a little benchmark on all the disks that are inside my machine to verify the differencies between the various units.

These are the results from my Intel-X25 M disk

These ones are for RAID-0 of two WD Velociraptor 10K RPM (150 GB each)

These ones are for my single WD Caviar Green EARX 2TB 7200 RPM

What conclusion I had from this simple test? The SSD completely outperform all other configuration in 4K and 4k QD32. The Big Surprise was the Caviar Green, a really inexpensive disk (64€ for 2T of space) can compare with 2 Velociraptor on RAID-0, and in 512k test it is actually faster. This will makes me to entire reconsider the expense of buying a 10K RPM unit right now, because it seems to me that new 7200 RPM disks are cheaper and faster

Gian Maria.

For some reasons it seems that my wordpress does not update the feed until I post something to the blog, this is a test post to force feed regeneration.

alk.

It seems that my feed become too big for Feedburner , this is a standard issue, so I decided to show only the most recent 10 post in the feed, but strangely enough, wordpress ignore that settings and my feed continue to show latest 15 blog entry .

To keep the feed updated I decided to include only an excerpt in the feed, trying to understand how to tell wordpress to use only 10 latest posts for the feed. Until now, please excuse me if you have not the full content on the feed

Alk.

My blog is moved to another host, the old one was dismissed, this is a test post to verify that everything is ok.

Alk.