Re: File output and buffering

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On Fri, 22 Aug 2008 04:53:56 -0700 (PDT), Maciej Sobczak wrote:

> On 21 Sie, 23:27, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
> 
>> "Still synchronous operations" of items in the group? Come on, grouping
>> brings nothing if items are output synchronously to the caller.
> 
> Of course it brings a lot - it minimizes the total overhead due to
> smaller number of requests.
> 
> Ever tried to send each character in a separate mail instead of
> sending one mail containing many characters?

It seems that you didn't read my posts. One last try. In your example, when
characters of a message are sent *synchronously* (assuming E-mail as the
transport layer, no back doors, etc) then each single character has to be
sent as a reply to the answer to the earlier mail. The very ability to send
multiple characters in one mail means that they are sent in parallel =
asynchronously. Compare it to parallel vs. serial communication. For the
rest see 

   http://en.wikipedia.org/wiki/Buffer_%28telecommunication%29

Note the category of the article, read the purposes of buffering.

>> In which
>> state relatively to the output is the caller between the ends of a group?
> 
> Why should I care?

Because it debunks your claim that the transfer of individual items is
synchronous. It is asynchronous, when makes sense.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de