From owner-freebsd-hackers Tue Feb 20 10:34:35 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from chopper.Poohsticks.ORG (chopper.poohsticks.org [63.227.60.73]) by hub.freebsd.org (Postfix) with ESMTP id 29FFA37B401 for ; Tue, 20 Feb 2001 10:34:33 -0800 (PST) (envelope-from drew@chopper.Poohsticks.ORG) Received: from chopper.Poohsticks.ORG (drew@localhost.poohsticks.org [127.0.0.1]) by chopper.Poohsticks.ORG (8.10.1/8.10.1) with ESMTP id f1KIYMn29117; Tue, 20 Feb 2001 11:34:22 -0700 Message-Id: <200102201834.f1KIYMn29117@chopper.Poohsticks.ORG> To: mouss Cc: Len Conrad , freebsd-hackers@FreeBSD.ORG Subject: Re: postfix: No buffer space available In-reply-to: Your message of "Tue, 20 Feb 2001 19:24:22 +0100." <4.3.0.20010220192222.04fd4100@pop.free.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <29113.982694061.1@chopper.Poohsticks.ORG> Date: Tue, 20 Feb 2001 11:34:21 -0700 From: Drew Eckhardt Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message <4.3.0.20010220192222.04fd4100@pop.free.fr>, usebsd@free.fr writes: >You might want to try setting > net.inet.tcp.sendspace > net.inet.tcp.recvspace >to larger values. I have these in my /etc/sysctl.conf. These control the default socket buffer size. Assuming postfix is not setting the appropriate socket options, when they are increased space will run out with even fewer connections. If they are decreased such that they are less than the bandwidth delay product, you will have TCP/IP performance problems. The original poster needs to play with some of the kern.ipc values instead, most notably kern.ipc.maxsockbuf. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message