freebsd stable - May 2007 - Does a pipe take a socket ... ?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


For those that remmeber the other day, I had that swzone issue, where I ran out 
of swap space?  I just about hit it again today, swap was up to 99% used ... I 
was able to get a ps listing in, and there were a whack of find processes 
running ...

Now, I think I know which VPS they were running in, so that isn't a problem
...
and I suspect that the find was just part of a longer pipe ... I'm just
curious
if those pipes would happen to use up any of those sockets that are 
'evaporating', or is this totally unrelated to sockets?

Thanks ...


- ----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email . scrappy@hub.org                              MSN . scrappy@hub.org
Yahoo . yscrappy               Skype: hub.org        ICQ . 7615664
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (FreeBSD)

iD8DBQFGSKR54QvfyHIvDvMRAg/iAKCXXw2eBMr6reJlKNqcG2IvlSvXvgCgi0R+
3cPjCNRy9r+N1MSYETwKPv4=ha/b
-----END PGP SIGNATURE-----

Marc G. Fournier wrote:
 > For those that remmeber the other day, I had that swzone issue, where I
ran out
 > of swap space?  I just about hit it again today, swap was up to 99% used
... I
 > was able to get a ps listing in, and there were a whack of find processes 
 > running ...
 > 
 > Now, I think I know which VPS they were running in, so that isn't a
problem ...
 > and I suspect that the find was just part of a longer pipe ... I'm
just curious
 > if those pipes would happen to use up any of those sockets that are 
 > 'evaporating', or is this totally unrelated to sockets?

In FreeBSD, pipe() is implemented with the socketpair(2)
system call.  Every pipe uses two sockets (one for each
endpoint).

Best regards
   Oliver

-- 
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
Handelsregister: Registergericht Muenchen, HRA 74606,  Gesch?ftsfuehrung:
secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht M?n-
chen, HRB 125758,  Gesch?ftsf?hrer: Maik Bachmann, Olaf Erb, Ralf Gebhart

FreeBSD-Dienstleistungen, -Produkte und mehr:  http://www.secnetix.de/bsd

"FreeBSD is Yoda, Linux is Luke Skywalker"
        -- Daniel C. Sobral