Re: Introduction

On Sat, 30 Apr 2005 17:12:20 +0200
  Serassio Guido <guido.serassio@acmeconsulting.it> wrote:
> Hi Henrik,
>
>>
>>>I don't wrote that your solution is wrong, or that C++ classes are
>>>bad. I wrote that your solution is slower.
>>
>>I doubt it actually is.
>
> The Evgeny's specific implementation is it. Its read() checks for
>the fd type at every I/O operation, when this could be done only one
>time when creating the fd.

One function call to fuction like
int test(int mode)
{ int rc;
    switch(mode)
    { case 0:
          rc = 0;
        break;
        case 1:
          rc = 2;
        break;
        case 2:
          rc = 3;
        break;
        case 3:
          rc = 4;
        break;
    }
    return rc;
}

take 1 / 14 * 1000 * 1000 sec on good old P2-350. Without
optimization
if suppose that every call to such function is to read/write 512
byte than the limit is about 7 Gb/sec ;-)

SY,
Evgeny Kotsuba
Received on Sat Apr 30 2005 - 13:50:04 MDT