On Monday, 23 April 2007 at 4:06:10 -0700, Jeremy Chadwick wrote: > On Sat, Apr 07, 2007 at 08:20:58PM -0300, Marc G. Fournier wrote: > > - --On Saturday, April 07, 2007 20:12:00 +0100 Chris <[EMAIL PROTECTED]> > > wrote: > > > Also to add I now have a 2nd box using 6.2 STABLE few days old code, > > > had to use it because of broadcom 5755 nic card, I plan to use large > > > tcp window sizes so will be interesting to see if this also suffers > > > from the problem. > > > > I've got 8 servers on the same network, 3 are almost identical, but one of > > them > > (the one with the problem) is using software RAID vs hardware ... but, if > > you > > are seeing it without using software RAID, then that is obviously not the > > culprit :( > > May be a red herring... > > I'm able to reproduce the "No buffer space available" message when > setting net.inet.tcp.(send|recv)space to non-default values. All I've > tried is the following, with a kernel dated 2007/04/22: > > # sysctl net.inet.tcp.sendspace=131072 > # sysctl net.inet.tcp.recvspace=262144 > > Example session: > > $ su2 > # sysctl net.inet.tcp.sendspace=131072 > net.inet.tcp.sendspace: 32768 -> 131072 > # sysctl net.inet.tcp.recvspace=262144 > net.inet.tcp.recvspace: 65536 -> 262144 > # logout > $ ssh medusa > socket: No buffer space available > ssh: connect to host medusa port 22: No buffer space available > $ su2 > # sysctl net.inet.tcp.sendspace=32768 > net.inet.tcp.sendspace: 131072 -> 32768 > # sysctl net.inet.tcp.recvspace=65536 > net.inet.tcp.recvspace: 262144 -> 65536 > # logout > $ ssh medusa > Last login: Mon Apr 23 03:45:45 2007 from ... > > I assume this is because the maximum size of a TCP datagram is 65536 > bytes, but as I'm not familiar enough with TCP on such a low level, > this may be speculation on my part. > > Just something worth checking/tinkering with. >
Try to adjust kern.ipc.maxsockbuf value. -- ====================================================================== - Best regards, Nikolay Pavlov. <<<----------------------------------- ====================================================================== _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
