Date: Thu, 24 Aug 2000 13:24:01 -0700 From: Jim Pirzyk <Jim.Pirzyk@disney.com> To: freebsd-hackers@freebsd.org Subject: Fwd: kern.ipc.maxsockbuf setting does not work Message-ID: <00082413254801.00439@snoopy.fan.fa.disney.com>
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So I have tracked down the bug to the fact in /sys/kern/uipc_socket2.c
of this code fragment in sbreserver():
if ((u_quad_t)cc > (u_quad_t)sb_max * MCLBYTES / (MSIZE + MCLBYTES))
return (0);
So why is the test not just this:
if ((u_quad_t)cc > (u_quad_t)sb_max)
return (0);
- JimP
---------- Forwarded Message ----------
Subject: kern.ipc.maxsockbuf setting does not work
Date: Thu, 24 Aug 2000 10:21:02 -0700
From: Jim Pirzyk <Jim.Pirzyk@disney.com>
I am running a 4.1-RELEASE i386 system and I am trying to increase the
maxsockbuf size so I set it in /etc/sysctl.conf like this:
kern.ipc.maxsockbuf=524288
And on bootup I see
kern.ipc.maxsockbuf: 262144 -> 524288
but when I try to use a larger buffer I get:
pirzyk@snoopy:/sys/kern
10>ttcp -r -w512
ttcp-r: buflen=65536, nbuf=2048, align=16384/0, port=5001, sockbufsize=524288 tcp
ttcp-r: socket
ttcp-r: setsockopt: sndbuf: No buffer space available
errno=55
But this should work. Seems the kernel is keeping the old value of
262144. Now I can change it in /usr/include/sys/socketvar.h (SB_MAX)
and rebuild the kernel but I do not think this is what was designed.
- JimP
--
--- @(#) $Id: dot.signature,v 1.9 2000/07/10 16:43:05 pirzyk Exp $
__o Jim.Pirzyk@disney.com -------------------------------------
_'\<,_ Senior Systems Engineer, Walt Disney Feature Animation
(*)/ (*)
-------------------------------------------------------
--
--- @(#) $Id: dot.signature,v 1.9 2000/07/10 16:43:05 pirzyk Exp $
__o Jim.Pirzyk@disney.com -------------------------------------
_'\<,_ Senior Systems Engineer, Walt Disney Feature Animation
(*)/ (*)
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