Date: Wed, 8 Nov 2000 14:06:44 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: Len Conrad <lconrad@Go2France.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: post-install of kernal sources, maxusers max? Message-ID: <20001108140644.Y5112@fw.wintelcom.net> In-Reply-To: <5.0.0.25.0.20001108211845.04d2d0a0@mail.Go2France.com>; from lconrad@Go2France.com on Wed, Nov 08, 2000 at 09:29:03PM %2B0100 References: <5.0.0.25.0.20001108211845.04d2d0a0@mail.Go2France.com>
next in thread | previous in thread | raw e-mail | index | archive | help
* Len Conrad <lconrad@Go2France.com> [001108 12:29] wrote: > Sorry to bother you hackers, but -questions isn't responding, and the > handbook and Complete/Lehey don't, afaics, cover this situation > explicitly. I can't really afford to screw up this production > machine and start over from fresh disk, nor futz around for hours > guessing what magik combo of post-install choices will do the trick. > > ========== > > I'm working, remotely, on a 4.1 system with only a binary install from cdrom. > > Now I need to do a custom kernal. Can the /stand/systinstall kernel! :) > post-config option be used to put on all the developer source pkg > without bothering the current config? which choice (I don't want X, > just enough to build a custom kernal) > > It's in production as 200 K msgs/day mail hub. > > All I need to change, I think, is maxusers since we're getting this > error from postfix: > > Nov 8 04:59:41 postfix/qmgr[16383]: fatal: socket: No buffer space available > Nov 8 04:59:41 postfix/smtp[16872]: fatal: socket: No buffer space available > Nov 8 05:00:58 postfix/qmgr[16876]: fatal: socket: No buffer space available > > The machine can get up 200 SMTP processes and 50 SMTPD processes > simulatenously, 256 meg RAM. > > Increasing maxusers will fix this pb? afaic, maxusers can't be fixed > with sysctl. Yes, but nmbclusters can, see the loader(8) manpage for the tunables to raise kern.ipc.nmbclusters, you might have better luck setting it to 32768. > Also: > > On the postfix list, it seems someone has heard from several FreeBSD > "experts" that FreeBSD should not be run at above maxusers = 128, > while somebody else said they were running with 256 happily. There was a very short period where FreeBSD 3.x wouldn't work properly when maxusers was above 256, but that hasn't been an issue for quite some time. -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20001108140644.Y5112>