C# FileStream : Optimal buffer size for writing large files?

c# size buffer filestream
Pygmy picture Pygmy · Dec 7, 2009 · Viewed 64.9k times · Source

Suppose I'm writing a couple of files to disk, between 2MB and 5GB. What are sensible buffer values for the FileStream ?

Is it sensible to work with buffersizes of several megabytes, or should I stick to kilobyte-buffers ?

Answer

Rubens Farias picture Rubens Farias · Dec 7, 2009

Default buffer size is 4 KiB.

Also, take a look here: Sequential File Programming Patterns and Performance with .NET

Related questions

File I/O with streams - best memory buffer size

I am writing a small I/O library to assist with a larger (hobby) project. A part of this library performs various functions on a file, which is read / written via the FileStream object. On each StreamReader.Read(...) pass, I …

Read More
Array Size (Length) in C#

How can I determine size of an array (length / number of items) in C#?

Read More
change array size

Is it possible to change an array size after declaration? If not, is there any alternative to arrays? I do not want to create an array with a size of 1000, but I do not know the size of the array …

Read More