Date: Thu, 27 Aug 1998 10:40:21 -0400 From: "Gessner, Matt" <mattg@aiinet.com> To: "'freebsd-questions@freebsd.org'" <freebsd-questions@FreeBSD.ORG> Subject: FW: Q was on questions, now putting it here. Message-ID: <7283DE19D141D111AD0E00A0C95B1955CF12B5@mail2.aiinet.com>
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I guess this died of lack of notice??? Can anyone suggest somewhere to at least start looking into making this work? Or is 2048 TCP connections too much to ask of this setup? TIA > ---------- > From: Gessner, Matt > Sent: Sunday, August 23, 1998 10:44 PM > To: 'hackers' > Subject: Q was on questions, now putting it here. > > Hi, all, > > I posted to comp.unix.bsd.freebsd.misc but nothing's come back... news > takes > a while. > > I'm running 2.2.7-RELEASE, and I've already changed my kernel a bit to > allow me to do a whole bunch of simultaneous connections, but I've > probably done something wrong, because it ain't working. > > Here's what I have: > > P5-166 Gateway > 32 MB RAM > 2 GB disk, 850MB belongs to FreeBSD, of which 100MB is swap. > PCI DEC Ethernet card > > Here's how I've mangled my poor kernel: > maxusers 128 > options CHILD_MAX=256 > options OPEN_MAX=2048 > options NMBCLUSTERS=4096 > > Here's how I've changed login.conf > > default and root both have unlimited child process and open file > counts. > > I've done a little poking around in param.c and don't see immediately > that I've violated any rules by setting these limits the way I have. > > When I type limits, I get the following info back: > > maxprocesses 2067 > openfiles 4136 > > But I can't find anything anywhere that talks about tuning the kernel > for doing this. > > What I need to do is be able to run lots of TCP connections, and I know > it can be done with FreeBSD. > > The connections are being made from FreeBSD to a proprietary board and > then to a Solaris machine. > > My end goal is to be able to bring up about 1024 TCP connections > outbound and route them back to the same box, for a total of 2048 > connections. > > Right now, I run 1024 connections to the other system, and what happens > is when the sockets are all connected, and the writes start to occur, > FreeBSD > just reboots the machine -- no messages anywhere. > > Have I really goofed up somewhere/something? Can anyone give me some > insight as to what MIGHT be happening here? E-mail is fine, so's the > newgroup. > > I suppose it's completely possible I'm running out of RAM and swap, but > I'd expect to see something in /var/log/messages to that effect. So > far, nothing. > > Recently I uppped NMBCLUSTERS to 4096, but it didn't seem to fix the > problem. > That was based on some notes in the FAQ. > > Even more recently (but haven't tested it yet) is that I upped my swap > space > to > 256MB for 32MB of RAM. I killed off that nasty Win95 virus that was > consuming all that disk space.... Nasty, nasty thing. > > Thanks in advance, > > Matt Gessner > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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