Date: Thu, 22 Aug 2002 00:01:13 -0700 (PDT) From: Chris Linstruth <cjl@QNET.COM> To: Matthew Emmerton <matt@gsicomp.on.ca> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: Open files and Swap Space Errors (fwd) Message-ID: <Pine.BSI.4.33.0208212359320.23564-100000@cello.qnet.com> In-Reply-To: <001b01c2498b$9779f830$1200a8c0@gsicomp.on.ca>
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Actually, I readily get the errors from systat -a. The system isn't grinding to a halt, it's just reporting swap errors and file table full when pstat -s and sysctl show, plainly, that they're not even close to their maximums. -- Chris Linstruth <cjl@qnet.com> QNET 1529 East Palmdale Blvd Suite 200 Palmdale, CA 93550 (661) 538-2028 On Wed, 21 Aug 2002, Matthew Emmerton wrote: > > ---------- Forwarded message ---------- > > Date: Wed, 21 Aug 2002 12:26:37 -0700 (PDT) > > From: Chris Linstruth <cjl@QNET.COM> > > To: freebsd-questions@freebsd.org > > Subject: Open files and Swap Space Errors > > > > I have a sendmail server giving me resource allocation errors but > > it looks to me like plenty of file handles and swap space are > > available.... Any thoughts? > > > > FreeBSD x.x.x 4.6-RELEASE FreeBSD 4.6-RELEASE #0: Tue Jun 11 06:14:12 GMT > 2002 murray@builder.freebsdmall.com:/usr/src/sys/compile/GENERIC i386 > > > > # pstat -s > > Device 1K-blocks Used Avail Capacity Type > > /dev/da0s1b 262016 9856 252160 4% Interleaved > > > > # sysctl -a | grep files > > kern.maxfiles: 8080 > > kern.maxfilesperproc: 3636 > > kern.openfiles: 383 > > p1003_1b.mapped_files: 0 > > > > # limits > > Resource limits (current): > > cputime infinity secs > > filesize infinity kb > > datasize 524288 kb > > stacksize 65536 kb > > coredumpsize infinity kb > > memoryuse infinity kb > > memorylocked infinity kb > > maxprocesses 1818 > > openfiles 3636 > > sbsize infinity bytes > > > > Running sysctl -a reports too many of these to post here: > > > > swap_pager_getswapspace: failed > > swap_pager_getswapspace: failed > > swap_pager_getswapspace: failed > > swap_pager_getswapspace: failed > > > > and > > > > <3>file: table is full > > <3>file: table is full > > <3>file: table is full > > <3>file: table is full > > <3>file: table is full > > > > And a few like this: > > <3>pid 29289 (sendmail), uid 0, was killed: out of swap space > > > > Any thoughts appreciated. > > -- > > Chris Linstruth <cjl@qnet.com> > > Well, somehow you are running out of swap space. Even though 'pstat -a' > shows that you've got tons free, that isn't useful since it (presumably) > wasn't taken at the same time your system was grinding to a halt. > > Off the top of my head, there's two things that could cause sendmail to spin > wildly out of control: > 1) misconfigured majordomo which causes bounces to be sent back to the list > (which bounce, and get sent back to the list, ...) > 2) some sort of mail bombing DoS > > If you're running with a high-enough LogLevel in your sendmail.cf, you > should see sender/recipient data in your sendmail logs, and this may give > you a clue as to what occurs when the system starts heading south. > > -- > Matt Emmerton > > > 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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