March 25, 2010
OutOfMemoryError - GC overhead limit exceeded
Someone asked me recently about the following exception on their ColdFusion server:java.lang.
February 25, 2010
Cache Template in Request Setting Explained
One of the new features added to ColdFusion 9 is the Cache Template in Request setting located on the Server Settings > Caching page of the ColdFusion Administrator. The setting was recently featured in the ColdFusion 9 Performance Brief showing a 50x boost when enabled.
February 24, 2010
ColdFusion 9 Performance Brief from Adobe
Adobe has posted a ColdFusion 9 Performance Brief, outlining several performance improvements over ColdFusion 7 and 8. The brief reports a 40% performance improvement over ColdFusion 8, and a 500% improvement over ColdFusion 7, running CanvasWiki.
August 06, 2009
Security Tradeoffs
I've said it before, tradeoff's pop up in programming all the time. They are often difficult decisions, with no easy answer, and we often make the wrong decision.
July 09, 2009
How CFThread Can Help OR Hurt Performance
I am working on a performance analysis for a client, some page requests need to do a cfhttp call, I had the thought to use cfthread for the http call, so that other processing could happen in parallel.
November 09, 2007
On Tradeoffs
I don't think any other kind of situation pops up more in a programmers day to day work than a Tradeoff. Tradeoffs are everywhere and being able to identify and access tradeoffs I think is one thing that makes a great developer.
August 07, 2007
CFThread - Don't Abuse It
I love the fact that you can now create threads with CFML in ColdFusion 8, however as Spiderman can tell you with great power comes great responsibility.Using threads can increase the performance of your application, however using threads can also decrease performance.
July 12, 2007
8 Ways to Save Bandwidth on your RSS Feed
One of the things you will notice after you have published an rss feed is that it will consume a lot of the bandwidth. For example on Spendfish.com 18% of the requests are for RSS feeds. This is no wonder since feed readers may download your feed several times a day even if nothing has changed.
January 02, 2007
MySQL Optimization Hints
Every programmer loves to optimize, even when we know we shouldn't. To satisfy your cravings MySQL has several keywords that can be placed in your SQL statement to give the database server an explicit optimization instruction.
May 11, 2006
Google Video: MySQL Performance Tuning Best Practices
Jay Pipes is a co-author of the recently published Pro MySQL recently spoke at Google on MySQL Performance Tuning Best PracticesYou can check out a video of the presentation on Google Video
There is also a good video from Google called The Paradox of Choice:
December 08, 2005
Premature optimization is the root of all evil
That's a quote from Dare Obasanjo at Microsoft who worked on the MSN Spaces project.
December 07, 2005
Java Performance Tuning Guide
Sun recently published a new whitepaper called Java Tuning. It should be of interest to anyone doing performance tuning on ColdFusion server and ofcourse any java application.
August 31, 2005
Faster Inserts with PostgreSQL
As I mentioned yesterday, I'm working on optimizing lots of inserts into a database, and I need solutions for different DB servers. Today I have been working with PostgreSQL. Although the PostgreSQL COPY command is recommended, I can't seam to get it to work with ColdFusion, and cfquery.
August 11, 2005
MySQL DELAY_KEY_WRITE Option
Another performance option in MySQL is the DELAY_KEY_WRITE option. According to the MySQL documentation the option makes index updates faster because they are not flushed to disk until the table is closed.
August 02, 2005
Insert Delayed with MySQL
I just discovered that MySQL has some handy optimization hints, and commands that you can pass in your SQL statements. Since there is a lot to cover with each tip, I will be posting them in separate blog entries. I have already written about the MySQL Query Cache optimization hints.
June 21, 2005
The MySQL Query Cache
I have been reading about MySQL's Query Caching features in the High Performance MySQL book, and on the web. I have also been playing around with it on my own. I have concluded that it is a pretty cool feature! You will need MySQL 4.0.1 or higher to play...
June 20, 2005
Performance of database tag schemas
Philipp Keller has done some performance test on 4 different database schemas for storing tagged items. Although his article refers to tagging bookmarks, you can tag pretty much anything.
May 06, 2005
Over Tweaking
There was a thread recently on the CFGURU mailing list about the merits of the various tweaks that CFML developers use to gain a few extra milliseconds.
April 28, 2005
High Performance MySQL
I just received my copy of High Performance MySQL by Jeremy D. Zawodny (from Yahoo) and Derek J. Balling.
June 03, 2004
ColdFusion Garbage
Now that you have had a chance to read my outline of garbage collection tuning in java. You should be asking yourself how does this relate to my ColdFusion server. Or maybe you just wondered what Garbage Collection has to do with ColdFusion Servers.
June 03, 2004
Tuning Garbage Collection
Every so often I come across the document: Tuning Garbage Collection, and I attempt to read all of it. The document is kind of hard to digest, so this time I created an outline of the Tuning Garbage Collection on the Java 1.4.2 Hotspot JVM document.
