On Jul 2,  9:37pm, yamt@mwd.biglobe.ne.jp (YAMAMOTO Takashi) wrote:
-- Subject: re: CVS commit: src/sys/kern

| > Another way to "fix" the problem is to increase the high watermark
| > if not set to be lowat + MCLBYTES.
| > 
| > christos
| 
| why MCLBYTES?
| 
| i don't want to tweak kernel for a configure script.
| is there any other application which is known to have a problem?
| 
| YAMAMOTO Takashi

I don't know if there are any other applications, but it seems strange
to have in the default configuration lowat == hiwat. Is the soreadable
and sowritable macro doing the right thing in that case?

It could also be a POSIX violation, because we are using sockets
internally to implement pipes, there is expected behavior for pipes
and operations < PIPE_BUF.

christos