bufferedstream use

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bufferedstream MSDN:Adds a buffering layer to read and write operations on another stream

User bufferedstream always faster than any stream?Just like network stream,filestream or others.
If not,when we should use bufferedstream?

Posted 18-May-10 20:32pm

kevein2008

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Dimitri Witkowski · Answer 1 · 2010-05-20T09:55:00

Suppose you have an open file, and you write it byte-by-byte, one byte per one call.
Each write operation will write a byte to the physical disk, this will be very slow.
And if you use BufferedStream, it will write each byte into a temporary buffer stored in memory which will be significantly faster. When the buffer will be large (you specify its size in constructor of BufferedStream), a physical write will occur.

Just to compare:
without BufferedStream - you go to the shop and buy meat. Then you return home, go to the shop again and buy milk... etc...
with BufferedStream - you go to the shop and buy all at once: milk, meat and cheese. Then go home. :)

Richard MacCutchan · Answer 2 · 2010-05-20T09:58:00

Solution 2

Buffering is most use when you have a stream that reads or writes short blocks of data, the buffering reduces the number of actual disk accesses so improving overall performance. There is a good explanation of the system on this[^] MSDN page.

Posted 20-May-10 9:58am

Richard MacCutchan