The content has been bookmarked!
There was an error bookmarking this content! Please retry.
Posted by Floyd Marinescu on Sep 24, 2007
Improve Java Garbage Collection, Runtime Execution, and JVM visibility with Zing
Getting Started with Stratos - an Open Source Cloud Platform
Mobile and the New Two-Tiered Web Architecture
This chat doesn't really deserve its own nomenclature does it? "The Box" == "The box of obvious stuff".
- Look at system load
- Use some system tools
- Java has gc.
- creating zillions of threads can be harmful.
The author did not mention that using synchronized methods locks the whole instance of the class and very often causes significant performance degradation.
WBR, Dmytro
Handling performance requirements is vital part of any software development effort. If you end up needing the "box" someone hasn't done their job properly.
In terms of fixing bad performance, I don't agree that you should go from bottom and upwards. It doesn't help to tune the hardware, VM and database of an application thats badly designed/constructed. Usually you have to work both ways (both at application level and infrastructure level) at the same time, and choose what gives most effect and lowest risk.
Final advice: Get real volumes of data and measure!
Handling performance requirements is vital part of any software development effort. If you end up needing the "box" someone hasn't done their job properly.
I think this comment is a bit unfair. It is like saying that bugs are because someone hasn't done their job properly. There are many reasons why performance problems creep into for many reasons. For example, concurrency issues often can't be found until you start integration testing. At that point you maybe into a full diagnostic effort on the application. This is a normal course of development in an imperfect worldIn terms of fixing bad performance, I don't agree that you should go from bottom and upwards. It doesn't help to tune the hardware
The article isn't about tuning, it is about a process of diagnostics, understanding that you really do have a problem with the DB as well as determining if the problem is caused by your application or by the DB its self.
The process is about ensuring consistency of results in your tuning efforts so that you're not wasting time fixing phantom problems. This, IME is the lowest risk way to proceed.
Kind regards,
Kirk
This chat doesn't really deserve its own nomenclature does it? "The Box" == "The box of obvious stuff".
At one time I might have agreed with this. However I have found that people have found this visualization of the *obviously* useful. It is a rough abstraction, it is flawed but even so....
Kind regards,
Kirk
Hi Kirk,
This article is really useful!!..
Attila Szegedi talks about performance tuning Java and Scala programs at Twitter: how to approach GC problems, the importance of asynchronous I/O, when to use MySQL/Cassandra/Redis, and much more.
One category of risk that project teams need to ensure they address is business value failure – delivering a product that fails to provide value for the business investor.
InfoQ spoke to the authors of Software Systems Architecture on a couple of new topics, the System Context viewpoint and Agile, which have been added to the second edition.
Alex Papadimoulis discusses ugly code, where it comes from, how to avoid it, and how to get rid of it.
John Davies examines Visa’s architecture and shows how enterprises have architected complex integrations incorporating Hadoop, memcached, Ruby on Rails, and others to deliver innovative solutions.
Sean Comerford unveils ESPN.com’s architecture, what components are used and why, and the current changes the website goes through.
Are there repeated patterns of failure on Enterprise Agile Enablement efforts? Sanjiv and Arlen discuss Seven Deadly Sins to avoid when adopting Agile in an enterprise.
Erik Dörnenburg answers: What is Enterprise and Evolutionary Architecture?, discussing 4 issues: Turning strategy into execution, Ensuring conformance, Where do the architects sit? Buying or building?
6 comments
Watch Thread Reply