Date: Wed, 28 Nov 2007 10:42:59 -0800 From: Julian Elischer <julian@elischer.org> To: Jan Srzednicki <w@wrzask.pl> Cc: freebsd-net@freebsd.org, freebsd-stable@freebsd.org Subject: Re: connect() returns EADDRINUSE during massive host->host conn rate Message-ID: <474DB6B3.1020202@elischer.org> In-Reply-To: <20071128183001.GQ2045@oak.pl> References: <20071127135320.GJ2045@oak.pl> <474DB1D0.3010100@elischer.org> <20071128183001.GQ2045@oak.pl>
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Jan Srzednicki wrote: > On Wed, Nov 28, 2007 at 10:22:08AM -0800, Julian Elischer wrote: >> Jan Srzednicki wrote: >>> Hello, >>> I have a pair of hosts. One of them performs a massive amount of >>> TCP connections to the other one, all to the same port. This setup >>> mostly works fine, but from time to time (that varies, from once a >>> minute to one a half an hour), the connect(2) syscall fails with >>> EADDRINUSE. The connection rate tops to 50 connection >> so, what does netstat -aAn show? > > How can I get any usable information from netstat? It shows a bunch of > connections, of course, but since connect(2) failed, I have no idea what > local port I was trying to use. but you can get an idea of the local socket distribution, and what state all the sockets are in (TIME_WAIT etc). > > And, what I forgot to mention, it's a SMP box, which could matter in > case of some race condition. hopefully not. >
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