IT Nursery
How can I check Heap Size (and Used Memory) of a Java Application on Linux through the command line? I have tried through jmap. But it gives info. about...
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time...
Scenario in short: A table with more than 16 million records [2GB in size]. The higher LIMIT offset with SELECT, the slower the query becomes, when using ORDER BY...
In terms of performance in Python, is a list-comprehension, or functions like map(), filter() and reduce() faster than a for loop? Why, technically, they run in a C speed,...
I just read that the VARCHAR(MAX) datatype (which can store close to 2GB of char data) is the recommended replacement for the TEXT datatype in SQL Server 2005 and...
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We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown? I...
I have about 10k posts and I made a page that lists all posts but it is paginated every 54posts. It gives 131 queries in 6.730 seconds which is...
I know that ‘crossing boundaries’ when making a JNI call in Java is slow. However I want to know what is it that makes it slow? What does the...
Assuming I have an ArrayList ArrayList<MyClass> myList; And I want to call toArray, is there a performance reason to use MyClass arr = myList.toArray(new MyClass[myList.size()]); over MyClass arr =...