Rico Mariani's Performance Tidbits

Implying no warranties and conferring no rights: "AS IS" since 1988

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  • Blog Post: Software Performance for Metro Style Applications

    With the Windows Consumer Preview out the door, I thought it would be interesting to write something about creating great performing Windows applications. I hope to have a lot more to say about this in the future but I think really the most important things I have to say are more inspirational rather...
  • Blog Post: Coding in Marble (Part 2)

    I thought I'd follow up on my last technical post with a few extra details about the Marble pattern, despite the name of the article I mostly talked about the Wood pattern. I guess perhaps this is timely because the use of Promises to represent asynchronous operations is increasingly popular, but these...
  • Blog Post: Coding in Marble

    I wish I could remember where I first read it because perhaps it deserves attribution. But many years ago I read about the two world views of physicists and they resonated with me. One world view is that prescibed by things like General Relativity and Maxwell's Equations . These have, in some sense a...
  • Blog Post: Ngen or not? The rules haven't changed very much since 2004

    I still get questions that amount to "should I ngen my <something>" from time to time and the best answer I can give is still "it depends." I wrote this article many years ago, and I'd say it's still pretty accurate: http://blogs.msdn.com/b/ricom/archive/2004/10/18/244242.aspx Essentially the...
  • Blog Post: Improving .NET Application Performance and Scalability

    This series can still be found here: http://msdn.microsoft.com/en-us/library/ff649152.aspx While some of the content is stale since it refers specifically to .NET 2.0 I think all of the conceptual content broadly applicable (even beyond managed code systems to software systems generally.) If...
  • Blog Post: Performance and Design Guidelines for Data Access Layers

    Many problems you will face are actually the building data access layer, sometimes thinly disguised, sometimes in your face; it’s one of the broad patterns that you see in computer science – as the cliché says: it keeps rearing its ugly head. Despite this, the same sorts of mistakes...
  • Blog Post: Performance Guidelines for Properties

    I can’t say I’ve asked the framework guidelines folks about this but I’m fairly sure there would be a lot of agreement from the guidelines gurus; so in the spirit of approximately correct advice I give you Rico’s Guidelines for Performant Properties. I should start by saying...
  • Blog Post: Measure!

    I know I haven't posted for a while; I'm hoping that will change soon. However in the mean time my daughter forwarded me this link because she thought it was cute. The thing is, she didn't realize it should be my theme song. http://www.youtube.com/watch?v=MMsQYjYlBEo It's rule #1 http://blogs...
  • Blog Post: Less Loosely Coupled Than Meets The Eye

    I don’t know that it is possible to write anything like a unitary software system in a way that is truly loosely coupled. It’s not that you can’t make boxes and lines that are cleanly separated in all sorts of pretty ways, though that’s hard enough. The problem is that even if...
  • Blog Post: A few words about Micro-Benchmarks

    It’s been a long time since I included my “this discussion is only approximately correct” disclaimer so I’ll just preface it here. In the interest of space and clarity, this discussion is only approximately correct. OK, now we can move on… I love micro-benchmarks. Really. I rely on micro-benchmarks...
  • Blog Post: Variability in Benchmarks

    I’m not especially a great fan of micro-benchmarks, they’re handy as a compliment to the larger tests but I often find that they lead to confusion because they are interpreted as reflecting reality when nothing could be farther from the truth. The fact is that micro-benchmarks are intended to magnify...
  • Blog Post: Visual Studio 2010 Performance Part 3: A Technical Update

    If I have any readers left out there, they might be interested to know what it is I’m up to this month. It’s a very important something. It’s... my vacation! Ok, seriously, I am in fact on vacation and I’ll be out for the next few weeks mostly because I’ve been working really hard on VS performance for...
  • Blog Post: Visual Studio: Why is there no 64 bit version? (yet)

    Disclaimer: This is yet another of my trademarked "approximately correct" discussions From time to time customers or partners ask me about our plans to create a 64 bit version of Visual Studio. When is it coming? Why aren’t we making it a priority? Haven’t we noticed that 64 bit PC’s are very popular...
  • Blog Post: Visual Studio 2010 Performance Part 2: Text Editor

    Part 1 of this series talked about the startup problems we face. In Part 2, I want to talk about the editor. Many people have reported that editing with the new editor is slower. I’ve experienced the same thing myself so I certainly do not want to accuse people of hallucinating but I thought it might...
  • Blog Post: Visual Studio 2010 Performance Part 1: Startup

    I want to start by thanking everyone that has commented on the Beta (by posting their thoughts here or elsewhere) for doing so. Please keep those comments coming! They have a great impact on the senior leadership here and they are excellent rallying points for all the teams. They really do make a difference...
  • Blog Post: Visual Studio 10 -- Your Performance Feedback plus Beta 1

    At Microsoft you can't say you're excited about anything you have to say that you're "super excited". I don't know why that's just the way it is . So, I'm happy to say that I'm super excited about the release of Beta 1 and I encourage you all to visit Jason's blog (again) to see screen-shots and get...
  • Blog Post: Visual Studio -- working on performance

    Jason has a new posting on the progress of Visual Studio and I wanted to chime in myself. Some people have been wondering what I’ve been up to… I think you’ll be happy to hear that about 2 months ago I put down a bunch of my long term planning responsibilities so that I could work on Visual Studio performance...
  • Blog Post: Performance Advice, Southern Style

    While I was at PDC2008 I was introduced to Keith and Woody -- pretty soon there was a microphone in front of me and we were doing a podcast. Now I already liked these guys but when they used a picture of me from about 1998 I really liked them a lot more. I wish I still looked like that :). And the...
  • Blog Post: Performance by Design at PDC2008!

    I'm happy to announce that I will be at PDC2008 (and I will work the booths until I can't speak) but in particular I'll be kicking off this precon event with my longtime colleagues Mark, Joe, and Vance. Come on out, I'd love to meet some of my readers! Performance by Design: Using the .NET Framework...
  • Blog Post: Is Performance a "functional" requirement?

    We had an internal thread on this yesterday, maybe I was a little too glib but here is what I had to say about the topic [edited so it can be read standalone] The original question, “Is performance a functional requirement” is highly unexciting for me. However the revised question, “What is the best...
  • Blog Post: Linq Compiled Queries Q & A

    I did a series of postings on Linq Compiled Queries last year, I recently got some questions on those postings that I thought would be of general interest. Q1: Why use the 'new' keyword in this snippet? var q = from o in nw.Orders select new {o.everything …}; A: If you did just : var...
  • Blog Post: Just another day in the perf lab

    Even though I've been doing general architecture work on Visual Studio for nearly a year now, my friends in DDPERF are still plugging away on performance problems and finding some interesting results. This most recent thread is very interesting because it shows yet another example of how the consequences...
  • Blog Post: Shutdown Is No Time For Spring Cleaning

    I think my current performance pet peeve is shutdown. Assorted flavors of it, they all seem to have the same kind of problem. Sometimes we're stuck with it... but maybe we shouldn't be? This is one time when our basic training, which normally I love so much, tends to let us down. We were all taught...
  • Blog Post: Computer Measurement Group offers past papers to the public!

    As you know I presented my performance signatures paper at the Computer Measurement Group's (CMG) conference a little over a year ago and I am happy to announce that CMG is now offering previous proceedings from 2005 and older to the public .  I think this is a fabulous move by them because there...
  • Blog Post: Performance Quiz #13 -- Linq to SQL compiled query cost -- solution

    Well is there really a "solution" at all in general? This particular case I think I constrained enough that you can claim an answer but does it generalize? Let's look at what I got first, the raw results are pretty easy to understand. The experiment I conducted was to run a fixed number of queries...
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