#bench marking

[srushtij1208]

5 Tactics to Improve Your Technology Scouting

Aranca has created powerful frameworks and processes to optimize and transform businesses based on its experience as an external provider of technology scouting and bench marking services.  

[projectchampionz]

MULTIVARIATE APPROACH TO BENCH MARKING QUALITY PREDICTION PARAMETERS IN BUILDING MAINTENANCE WORKS

MULTIVARIATE APPROACH TO BENCH MARKING QUALITY PREDICTION PARAMETERS IN BUILDING MAINTENANCE WORKS

RESEARCH PROJECT TOPIC ON MULTIVARIATE APPROACH TO BENCH MARKING QUALITY PREDICTION PARAMETERS IN BUILDING MAINTENANCE WORKS

TABLE OF CONTENT

Title Page———i

Certification——–ii

Dedication———iii

Acknowledgement——-iv

Abstract ———vi

Table of Content——–vii

Chapter One

1.0 Introduction ——-1

1.1 Statement of Problem——4

1.2 Purpose of the Study——5

1.3 Significance of Study——8

1.4 Limitation——–9

1.5 Scope…

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[hackthechad]

Shiny Microbenchmarking with Caliper!

I have been working on an Android app for the past month or so and have come across a few really neat frameworks and tools to help Android developers design their applications for usability and performance. I would suggest checking out these resources (if you haven't already): http://developer.android.com/guide/practices/design/performance.html http://developer.android.com/guide/practices/design/responsiveness.html http://developer.android.com/guide/practices/design/seamlessness.html The final "tightening" of your application is crucial in order for it to be well recieved. In case you didn't know, the Android Marketplace user-base is quite vocal meaning they are not afraid to "tell it like it is". If your app isn't rock solid or doesn't perform well you should definitly read (or re-read) the above articles BEFORE you release! Tip: Use the Android Monkey tool. Upon my first run of the Monkey tool along side logcat I discovered a really nasty memory leak that would have been very hard to find (much less solve) late in the development cycle. Do yourselves a favor and release the monkey on your app today! Example Monkey command: $ adb shell monkey -p org.your.package.goes.here -v 500 Now I would like to introduce you all to the Caliper Microbenchmark framework http://code.google.com/p/caliper/ , http://code.google.com/p/caliper/wiki/JavaMicrobenchmarks . It is a completely free, open-source framework that feels alot like JUnit. Caliper is cool because it allows you to collect some statistics on your code performance. Read the second link to see some good reasons on why you would want to do this because I am to lazy to do so... Here is an example of a very basic perf test (pulled from Caliper's site): public class MyBenchmark extends SimpleBenchmark {   public void timeMyOperation(int reps) {     for (int i = 0; i < reps; i++) {       MyClass.myOperation();     }   } } Notice how the pattern is very much like JUnit. You create a test class that extends a test case (SimpleBenchmark). Here there is a difference being that we predicate the member function with 'time' instead of 'test' similiar to we do in JUnit. Additionally, we use a int parameter 'reps' to specify how many iterations we want our test to run for. Also notice the return type is void as it is with JUnit. At this point you may be wondering about private member functions. Maybe you have a really important private helper method that does alot of your applications work? Good, I am glad you asked! Fortunately the delvik JVM supports the use of Java's reflections library. Here is an example of using reflections to break encapsulation and bench your private methods: public class MyBenchmark extends SimpleBenchmark {   public void timeMyOperation(int reps) {     // the class object of the class we are testing     MyClass object = new MyObject();     Class reflectionsClass = MyClass.class;     // the method object we want to invoke during testing     Method myMethod = reflectionsClass.getDeclaredMethod("yourMethodNameGoesHere");     // DO NOT forget to do this...     myMethod.setAccessable(true);       for (int i = 0; i < reps; i++) {       // now we invoke the method using our test object!       myMethod.invoke(object);       }   } } Hopefully this code won't look too strange. I tried to make the example as straight forward as possible. If the Java reflections library is new to you, check out the API for it. It's really not that bad...I promise. If the outline below does not help, I suggest playing with reflections in a seperate test project. In a nutshell, this is what the above example does: 1. Create our object we want to test (object). 2. Get a class object of our test object (reflectionsClass). 3. Get the private method declaration we want to test (myMethod). 4. We reset the visibility of the method to public. 5. Invoke our method using the object we want to test with. I should also point out that the code above does not have the required exception handling for readability (this example actually needs to catch about 5 different exceptions). Furthermore, the simple act of invoking the Java reflections framework can add a bit of additional time complexity to your tests as well so you will probably need to account for this. Just be sure you check out the Caliper wiki pages and such to get an idea of what Caliper can do for you and what it cannot and also what you need to consider during these tests. Disclaimer: Please, please, please think of your API first and performance second...

[shiftymcshovin]

PUMPED

I am really pumped for bench marking tomorrow! I almost wish it was tonight. I should be nervous, but I'm not. Everyone has made me feel like I can do it, and that it will be fine. This is the only test I haven't felt nervous about in my life. I'm a little worried that I'm not nervous, ha ha. I think it will be good though. I feel like I am ready.

WOO!

[shiftymcshovin]

Extra Practice

 I always enjoy the extra practices. It's nice to be able to work on things you've been struggling with at your own pace. I've been really worried about doing laterals for bench marking, but after tonight I think I should be able to pass them. It's mostly what I worked on, and I was feeling pretty good about them at the end. 

 I was reading one of my earlier blog posts about jumping on skates for the first time, and it made me realize how much I have improved since then. It said something along the lines of "screaming like a little girl the first time I jumped". Tonight, I jumped over a 2x4 ( the 4" part) without even batting an eye.

 It is very important to constantly try to improve your self. It is important to realize what you need work on, and then work on it. However, I think it is also extremely valuable to realize how far you have come. I can't believe how much I have improved since the first time I went to a practice. 

So, my advice to any other Meaties out there: Praise yourself once and a while. I mean, look at what you've accomplished so far! This all sounds a little self help-ish, but it really helps.

[shiftymcshovin]

New Rink

I got to skate in our new practice today. The floor at the curling rink is waaaaaaaaay faster! It scared me a little when I first got on it. It doesn't help that I am using gigantic outdoor wheels and craptastic bearings. Hopefully when I get back from Japan I'll get some new ones (Side note: I leave for Japan on May 31st! Yay me!).

I don't know if I will pass the laterals part of bench marking or not. I'm a little worried.  I mean, I know I'll get it eventually, but I don't think I am doing well enough to pass. Agh! I'm also not 100% sure if my hitting is good enough, though I think it's pretty good. I had so much fun practicing hitting though, that it made me feel a little less nervous. I think the less I think about bench marking, the better.

We also did some scrimmaging. It was a lot of fun, though I still have no idea what I am doing haha. I have to say, I think I am more of a jammer than a blocker. Blocking is fun, but jamming is thrilling! I like trying to sneak through the spaces in the pack, although that is something I definitely need to work on! 

I only got 24 laps, but I was still getting used to the floor. That's my excuse and I'm sticking to it! Tomorrow I'll get the 25 for sure!