Date: Mon, 18 Mar 2002 07:52:33 +0200 From: "Patrick O'Reilly" <bsd@perimeter.co.za> To: "Brendan McAlpine" <bmcalpine@macconnect.com>, "Doug Reynolds" <mav@wastegate.net>, <questions@FreeBSD.ORG> Subject: Re: HELP!! problem with new bsd mail server [solved kind of] Message-ID: <001601c1ce41$1b8ff5a0$0200000a@perimeter.co.za> References: <B8BA8440.B963%bmcalpine@macconnect.com>
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maxusers in the Kernel config ??? ----- Original Message ----- From: "Brendan McAlpine" <bmcalpine@macconnect.com> To: "Doug Reynolds" <mav@wastegate.net>; "Patrick O'Reilly" <peri@perimeter.co.za>; <questions@FreeBSD.ORG> Sent: Monday, March 18, 2002 12:34 AM Subject: Re: HELP!! problem with new bsd mail server [solved kind of] > Ok > > Here is what I've found so far. Thanks for all the help to date. It is > very much appreciated. > > I found that when I shut down qmail, the server returned to normal. After a > thorough search through qmail files and after several hours of testing, the > problem seems to be occurring when the concurrent connections (pop and smtp) > gets up to about 100. At that point the network card stops working. > > I am using the generic 4.3 kernel. Once I lowered qmails concurrent > connections setting (to 20, very low) the server operated just fine. > However, when it gets busy during business hours, mail is going to be queued > up, not a good thing. > > Are there any settings in the kernel that I should be changing to allow this > machine to handle more concurrent connections without freaking out? > > Thanks for any advice. > > Brendan > > From: "Doug Reynolds" <mav@wastegate.net> > > Reply-To: "Doug Reynolds" <mav@wastegate.net> > > Date: Sun, 17 Mar 2002 11:39:32 -0500 > > To: "Brendan McAlpine" <bmcalpine@macconnect.com>, "Patrick O'Reilly" > > <peri@perimeter.co.za>, "questions@FreeBSD.ORG" <questions@FreeBSD.ORG> > > Subject: Re: HELP!! problem with new bsd mail server [solved kind of] > > > > On Sun, 17 Mar 2002 11:24:33 -0500, Brendan McAlpine wrote: > > > >> Thanks Patrick. Sorry for the lack of info. > >> > >> At this point, all I want is for the machine to run a full 24 hours without > >> going deaf to network connections. > >> > >> Its very strange. The machine is running FreeBSD4.5 and I'm running qmail, > >> qmailadmin, and sqwebmail. Apache is serving up the qmailadmin and > >> sqwebmail cgi's. > >> > >> The machine is a brand new, dual 1GHZ pentium running RAID 5 across 3 large > >> SCSI disks. > >> > >> Every 3 or 4 hours the machine goes "deaf" to its network set up and no > >> incoming or outbound traffic can get through. When it goes deaf it can't > >> even ping the switch its connected to. > >> > >> At first I thought the problem was because of the dual ethernet cards. So I > >> disabled one of them in the bios settings. The machine ran better. After > >> 24 hours or so, it started going deaf every 4 or 5 hours again. > >> > >> Since this is happening on a more or less random schedule, I can't pin down > >> what the problem is. Something is causing the machine to less its > >> networking ability for about 10 minutes at a time every 4 or 5 hours. > >> > >> BTW, I checked my log files and nothing is being logged as errors when the > >> downtime occurs. The only errors in there are: > >> > >> /kernel: stray irq 7 > >> > >> I'm unsure of how to move from here....please help..... > > > > first thing you need to give us is a dmesg and tell us what kinda > > network card(s) you are running.. > > > > the stray irq 7 sounds like a conflict > > > > try turning off your LPT1 printer port in the BIOS (if you aren't using > > it) and see if that helps > > > > --- > > doug reynolds | the maverick | mav@wastegate.net > > > > PGP Public Key Fingerprint: 7FEC 10AA 056B F8DE AC1E 6965 FBBE 9601 > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" 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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