Date: Mon, 18 Mar 2002 01:32:39 -0500 From: Brendan McAlpine <bmcalpine@macconnect.com> To: Patrick O'Reilly <bsd@perimeter.co.za>, <questions@FreeBSD.ORG> Subject: Re: HELP!! problem with new bsd mail server [solved kind of] Message-ID: <B8BAF437.BA56%bmcalpine@macconnect.com> In-Reply-To: <001601c1ce41$1b8ff5a0$0200000a@perimeter.co.za>
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Hmmm The generic kernel is set for 32 maxusers, which should give me 532 simultaneous processes. Qmail is only set for 100 concurrent connections at its max......so would increasing the maxusers really help? What about ICMP_BANDLIM? I've heard that sometimes that kernel option causes networking problems. Has anyone heard about that? Thanks Brendan > From: "Patrick O'Reilly" <bsd@perimeter.co.za> > Date: Mon, 18 Mar 2002 07:52:33 +0200 > 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] > > 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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