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VSTS Profiler @ TechEd2007

Posted Monday, June 04, 2007 6:45 AM by scarroll
Hey all, Marc (the QA lead) and myself (the Dev lead) of the VSTS profiler are sitting in front of Booth Dev-2 (Visual Studio Team System) in the Technical Learning Center. The TLC should be opening up soon to customers, so I'd like to encourage you all Read More...
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Public Chat: This Wednesday

Posted Monday, June 13, 2005 8:56 PM by scarroll
Hey folks. We have a public chat scheduled for tomorrow. I just checked the schedule and we have a bunch of the devs, testers, PMs, who are responsible for the dev and test skus of Team System signed up to be on for tomorrow's chat. If you've never tried Read More...
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In honor of TechEd: Profiler Greatest Hits bloggin'

Posted Thursday, June 09, 2005 2:39 PM by scarroll
My illustrious co-worker, Ian, is compiling a central resource of all the most essential profiler blog posts . Read More...
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Beta2 CLR Symbols Live!

Posted Friday, May 27, 2005 10:45 AM by scarroll
The symbols for several key CLR Beta2 Symbols are finally on the symbol server. Go forth and profile! If you had previously sampled some managed apps and were disappointed with the stacks, please give it another try. Unfortunately, the DLLs that had their Read More...
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Profiling Tip: Amdahl's Law and Long Sampling Runs

Posted Thursday, May 19, 2005 12:40 AM by scarroll
A lot of my graduate work was in the area of parallel computing so we spent a lot of time with Amdahl's law. Amdahl's law states that if you can speed up some fraction F of the program by some speedup S, the overall speedup of the program is: 1 / [ ( Read More...
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Profiling FAQ #4: The top sampled function is [ntdll.dll], now what do I do?!

Posted Wednesday, April 13, 2005 8:20 PM by scarroll
One of our big missions here in VS Profiler land is to bring profiling tools to people who maybe haven't had access to one before. I know before I started here, I never really needed to use the Microsoft Symbol Server. However, for the profiler in sampling Read More...
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Profiling FAQ #2: Why am I seeing functions from DLLs I didn't instrument in my Function view?

Posted Friday, April 08, 2005 2:26 PM by scarroll
This is actually just a corollary of the "Why don't instrumentation and sampling calltrees look the same" FAQ. In instrumentation, you will see all of the functions inside of the instrumented DLL as you would expect. However you will also see every function Read More...
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Profiling FAQ #1: Why doesn't my Sampling Call Tree look like my Instrumentation Call Tree

Posted Friday, April 08, 2005 1:34 PM by scarroll
This post is adapted from an internal mail. The customers were somewhat confused about the reason their callstacks looked so different in Sampling mode and Instrumentation mode. Let's say your program consists of only 2 DLLs, foo.dll and bar.dll. Foo.dll Read More...
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Must watch Managed Perf Primer on Channel 9

Posted Thursday, April 07, 2005 4:14 PM by scarroll
I watched all 50 minutes of Rico Mariani's new Channel9 video which can be found at http://channel9.msdn.com/ShowPost.aspx?PostID=54964 . It's a really excellent summary of the points that Rico has been driving home about getting better perf out of your Read More...
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Profiling Tip #2: Managed Code profiling and the command line

Posted Thursday, April 07, 2005 3:44 PM by scarroll
The most common question that comes in to the internal profiler by far is "Why am I not seeing any managed code in my profiles?" Most of the internals who use our profiler like to do profile collection using the command line tools. The reason why this Read More...
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Profiling Tip #1: release vs. debug

Posted Thursday, April 07, 2005 3:25 PM by scarroll
Don't laugh! I've seen this happen a few times now. In the UI , if you are debugging your debug build and then switch to performance tools and push launch, you will be profiling your Debug bits! Don't do this. Make sure you have set your configuration Read More...
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