Subj : Re: help with basic multithreading in C on solaris
To   : comp.programming.threads
From : Leon Mergen
Date : Sat Feb 26 2005 05:04 pm

On Sat, 2005-02-26 at 15:14 +0000, Winbatch wrote:
> Basically, I wanted to see if it
> would be faster to write to 4 files at the same time (parallel) rather than
> 4 in a row (serially). 

Since writing to files uses functions which might block, this is indeed
true, provided that you don't take thread initialization into account
(use a thread pool, for example).


>  however, when my multithreaded code executes, it
> seems to do them in order anyway (I expected to see Starting/Ending all
> mixed rather than in order).  

I haven't got any experience with C pthreads (i'm using C++
boost::threads personally), but could it perhaps be that the time to
initialize a thread is longer than to actually execute the thread's
function, thus resulting in an ordered list of start/end calls ?

Regards,

Leon Mergen

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