Hi guys, I'm in the proccess of speeding up the code and mysql. I'm comparing it to the crawl stats in Google Sitemaps and I was just wondering what other people are seeing for their stats. Mine are High: 266 Average: 158 Low: 115 Thanks ...
I have heard that instanceof operator in java is a performance issue, Is it true for Javascript too (IE6,IE7,IE8,FF,Chrome,safari,etc.)? any links to authentic papers would be helpful. ...
Hi In my case I have a Mysql Table with 2,976,977 records. This table has indexes on two columns, and I used these two columns while updating and inserting records from multiple clients. The problem is that it is taking too much time for updating or inserting the values. Is any Idea to speed up this? ...
The situation is like this, we have a very slow WebSphere 6.1 deployment, and want to get information from the console (we can't have access to anything but the console) What are the tools we have there to troubleshoot (performance issues, memory etc)? Remember, all we can have is web access to the console web interface Thanks ...
Is there a way to programmatically determine how busy a physical disk is in C# without using a System.Diagnostics.PerformanceCounter? I ask because the documentation for System.Diagnostics.PerformanceCounter states that the user requires elevated priveleges and must be adminitrator or member of performance counters user group. I have n...
Hello. In my site, I'll be inviting people to contribute variety of content, like pictures, video, and things alike. Besides the core content, I'll be capturing meta data. Some meta data will be common across content types and some will be specific. I am planning to have 1 table that accommodates universe of meta data with that many c...
Hi While declaring Javascript in a html document. We have 3 ways to do that script section goes in the head tag script section goes in the body tag javascript is references from an external file Which one of these is faster and efficient with respect to performance is considered? Thanks ...
Summary: How can I reduce the amount of time it takes to convert tifs to pdfs using itextsharp? Background: I'm converting some fairly large tif's to pdf using C# and itextsharp, and I am getting extremely bad performance. The tif files are approximately 50kb a piece, and some documents have up to 150 seperate tif files (each represent...
I have created a prototype of a custom ORM tool using aspect oriented programming (PostSHarp) and achieving persistence ignorance (before compile-time). Now I tried to find out how much overhead does it introduce compared to using pure DataReader and ADO.NET. I made a test case - insert, read, delete data (about 1000 records) in MS SQL S...
hi I am looking at the performance of OpenMP program, specifically cache and memory performance. I have found guidelines while back ago how to analyze performance with Vtune that mentioned which counters to watch out for. However now cannot seem to find the manual. If you know which manual I have in question or if you know the counters...
I'm now in the final stages of upgrading the hierarchy design in a major transactional system, and I have been staring for a while at this 150-line query (which I'll spare you all the tedium of reading) and thinking that there has got to be a better way. A quick summary of the question is as follows: How would you implement a hierarchi...
Lets say I wanted to build an app that will pull url links from a database and show 50 on a page. I am just using links as an example. What if I had to store multiple values, an array into 1 mysql field for each link/record posted. If there is 5 items for every Link, I could have an array of 5 items on the page, a list of 5 items s...
I want to use the bts and bt x86 assembly instructions to speed up bit operations in my C++ code on the Mac. On Windows, the _bittestandset and _bittest intrinsics work well, and provide significant performance gains. On the Mac, the gcc compiler doesn't seem to support those, so I'm trying to do it directly in assembler instead. Here's...
Is there some reliable (i.e. acknowledged) data on the execution times for various queries, such as different types of joins, scans, with different types and size of data? I am looking for the order of magnitude. This does not have to be vendor-specific data. It should be similar in terms of presentation for latency for various access t...
As a preface, I am brand new to using SQL Server 2005; I know how to use the SELECT, UPDATE, DELETE, and INSERT commands and that's about it. I am also using Express Edition on my local PC (E8400 processor, 8GB of DDR2-800, 2 x 640GB SATA-II HDD in RAID 1) I have a table that I set up with 8 columns, all are NVARCHAR(Max) and I allow Nu...
i have seen comments on using table-layout: fixed. I have seen comments on defining col widths upfront and also lots of comments on avoiding table especially nested tables and use some css solution instead of tables. Is there an agreed documented solution for rendering an html table as fast as possible? Also, if there is an alternativ...
Which option is better and faster? Insertion of data after creating index on empty table or creating unique index after inserting data. I have around 10M rows to insert. Which option would be better so that I could have least downtime. ...
I've been a Perl guy for over 10 years but a friend convinced me to try Python and told me how much faster it is than Perl. So just for kicks I ported an app I wrote in Perl to Python and found that it runs about 3x slower. Initially my friend told me that I must have done it wrong, so I rewrote and refactored until I could rewrite and r...
Let's say i have people who search for jobs, and i have a list of jobs. So i have two tables: people and jobs. Now i have a list of skills of the person, and i have a list of skills for the job requirement. What is better to have ONE skills table like this: CREATE TABLE skills_reference ( id INT, reference_id INT, -- can reference peop...
What all can we do to make a asp.net web application run faster than before. What are all the tweaking required for it ? ...