FreeTDS Development Group

["ZIGLIO, Frediano, VF-IT" <Frediano.Ziglio AT vodafone.com>]

> 
> >From my research on the FreeBSD platform you can't toggle 
> TCP_NOPUSH to 
> indiciate flushing of buffers like you can with TCP_CORK on other 
> platforms.
> 
> When I compile with the nopush options I get very long delays 
> (>2sec) for 
> some queries.  Commenting them out the delays go away.
> 
> My vote is for yanking NOPUSH for FreeBSD... sound reasonable?
> 
> Besides nagle should absorb most of the performance hit 
> associated with 
> short writes?
> 
> Have Fun!
> Peter

I don't have FreeBSD to test with. What I did is to search on internet
an option similar to TCP_CORK. Some mails (4 year ago!!) reported that
newer behavior of TCP_NO_PUSH was equal to TCP_CORK. Today I tried to
search again and I found a patch that add support for TCP_CORK even to
FreeBSD... I don't know if this patch has been committed.

You tested that TCP_NOPUSH under FreeBSD 5.0 do not work correctly so
would be so kind to try with 

 /* Try to use TCP_CORK on *BSD */
 #elif (defined(__FreeBSD__) || defined(__GNU_FreeBSD__) ||
defined(__OpenBSD__)) && defined(TCP_CORK)
 #define USE_CORK 1

instead of

 /* On *BSD use TCP_NOPUSH (same bahavior of TCP_CORK) */
 #elif (defined(__FreeBSD__) || defined(__GNU_FreeBSD__) ||
defined(__OpenBSD__)) && defined(TCP_NOPUSH)
 #define USE_CORK 1
 #define TCP_CORK TCP_NOPUSH

(net.c) ??

freddy77