The system I work on here was written before .net 2.0 and didn't have the benefit of generics. It was eventually updated to 2.0, but none of the code was refactored due to time constraints. There are a number of places where the code uses ArraysLists etc. that store things as objects. From performance perspective, how important chan...
I need to create my own performance goals and have them approved by my manager. They will be reviewed at the end of the year. What are some measurable performance goals that others have used? It is my first year, so I can't compare my performance to last year. ...
This is a programming question in the sense that I'm experiencing a hardware issue which is keeping me from being able to develop effectively... Anyway, my PC is running insanely slow, but it doesn't appear to be a memory consumption issue or a CPU issue - no programs are running away with too much of either. But something is thrashing ...
What are the advantages and disadvantages of DTOs from a website performance perspective? (I'm talking in the case where the database is accessed on a different app server to the web server - and the web server could access the database directly.) ...
What is the best available tool to monitor the memory usage of my C#/.Net windows service over a long period of time. As far as I know, tools like perfmon can monitor the memory usage over a short period of time, but not graphically over a long period of time. I need trend data over days, not seconds. To be clear, I want to monitor th...
I've found the standard hashing function on VS2005 is painfully slow when trying to achieve high performance look ups. What are some good examples of fast and efficient hashing algorithms that should void most collisions? ...
I was wondering if there's any way to change the behavior of the .NET JIT compiler, by specifying a preference for more in-depth optimizations. Failing that, it would be nice if it could do some kind of profile-guided optimization, if it doesn't already. ...
For example, referencing something as System.Data.Datagrid as opposed to just Datagrid. Please provide examples and explanation. Thanks. ...
What's the best way to manage a slew of browser UI tests? I'm looking for an approach that may have worked for you in the past when dealing with numerous automated browser tests. Obvious answers such as "they should be refactored into lower-level UI tests" aren't what I'm looking for. Ultimately these tests are incredibly time consuming ...
Is there a tool for Windows XP and Vista (built-in or otherwise ideally freeware/OSS) that can notify the user when the CPU is above a (configurable) threshold for some (configurable) duration? I am particularly interested in a minimalist tool that fits the following bill and in order of importance (which a lot of the built-in Windows f...
I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO design generally tries to avoid using instanceof, that is a different story and this question is purely related to performance. I was wondering if there is any performance impact? Is is just as fast as ==? ...
I have two insert statements, almost exactly the same, which run in two different schemas on the same Oracle instance. What the insert statement looks like doesn't matter - I'm looking for a troubleshooting strategy here. Both schemas have 99% the same structure. A few columns have slightly different names, other than that they're the s...
What kind of performance implications are there to consider when using try-catch statements in php 5? I've read some old and seemingly conflicting information on this subject on the web before. A lot of the framework I currently have to work with was created on php 4 and lacks many of the niceties of php 5. So, I don't have much experi...
I have a winforms application that normally is at about 2-4% CPU. We are seeing some spikes up to 27% of CPU for limited number of times. What is the best profiling tool to determine what is actually causing this spike. We use dottrace but i dont see how to map that to exactly the CPU spikes? Appreciate the help ...
Is there a .NET performance counter to show the rate of p/invoke calls made? I've just noticed that the application I'm debugging was making a call into native code from managed land within a tight loop. The intended implementation was for a p/invoke call to be made once and then cached. I'm wondering if I could have noticed this mist...
When retrieving a lookup code value from a table, some folks do this... Dim dtLookupCode As New LookupCodeDataTable() Dim taLookupCode AS New LookupCodeTableAdapter() Dim strDescription As String dtLookupCode = taLookupCode.GetDataByCodeAndValue("EmpStatus", "FULL") strDescription = dtLookupCode.Item(0).Meaning ...however, I've also ...
I'm writing an import utility that is using phone numbers as a unique key within the import. I need to check that the phone number does not already exist in my DB. The problem is that phone numbers in the DB could have things like dashes and parenthesis and possibly other things. I wrote a function to remove these things, the problem ...
The arguments about the simplicity of solutions using XML-RPC or REST are easy to understand and hard to argue with. I have often also heard arguments that the increased overhead of SOAP may significantly impact used bandwidth and possibly even latency. I would like to see the results of a test that quantifies the impact. Any one know...
My last couple of projects have involved websites that sell a product/service and require a 'checkout' process in which users put in their credit card information and such. Obviously we got SSL certificates for the security of it plus giving peace of mind to the customers. I am, however, a little clueless as to the subtleties of it, and ...
Consider an indexed MySQL table with 7 columns, being constantly queried and written to. What is the advisable number of rows that this table should be allowed to contain before the performance would be improved by splitting the data off into other tables? ...