From: Ben Stuyts <ben@stuyts.nl> To: Terry Lambert <tlambert2@mindspring.com> Cc: current@freebsd.org, Jeff Roberson <jroberson@chesapeake.net>, Robert Watson <rwatson@freebsd.org>, jeff@freebsd.org, Alfred Perlstein <alfred@FreeBSD.ORG> Subject: Re: [Ugly PATCH] Again: panic kmem_malloc() Message-ID: <4.3.2.7.2.20021019001010.00b89f28@terminus> In-Reply-To: <3DB07805.AB4BAA15@mindspring.com> References: <4.3.2.7.2.20021018125313.00bb8990@terminus>
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Terry,
At 23:07 18/10/2002, you wrote:
>Ben Stuyts wrote:
> > Furthermore, this might be interesting: the last vmstat -m log
> > before the panic. Maybe someone can check if these values are reasonable?
> > The system has 64 MB memory and has been up for about 24 hrs with almost no
> > load.
> > sem344456 5390K 5390K 344456 16,1024,4096
>
>Almost 5.3M of unswappable physical memory dedicated to semaphores
>seems like a bit much.
Yes, and it increases continuously, for example when I fetch new mail (over
pop) from my windows pc. The pc stores this again on a network drive, so
both qpopper and smbd are involved. For example, vmstat -m says:
vmstat -m | grep sem
sem155886 2443K 2443K 155886 16,1024,4096
Now when I do a fetch-mail with Eudora on my pc, the same command says.
vmstat -m | grep sem
sem156178 2448K 2448K 156178 16,1024,4096
I can repeat this at will, and each time I loose 4-5 KB. qpopper is started
from inetd, and smbd runs as a daemon. I tried stopping smbd:
[terminus.stuyts.nl etc/rc.d]90: sudo /usr/local/etc/rc.d/samba.sh stop
[terminus.stuyts.nl etc/rc.d]91: !vm
vmstat -m | grep sem
sem156524 2453K 2453K 156524 16,1024,4096
It doesn't free the sem allocated memory.
>But without knowing what software you are running, it's hard to say
>if the number is unreasonable, or not.
Well, it is really a lightly loaded server, just serving one windows pc
here at home. Here is a ps, and the only thing that's missing from it is
the occasional pop session. Also note that this system is not connected to
the internet, so the http that's running is mostly for my own pleasure (and
proxy/cache). I do run ppp and uucp every now and then.
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
dnetc 503 94.2 0.8 960 460 ?? RNs Thu09PM 1529:56.87
/usr/local/distributed.net/dnetc -quiet
root 10 0.0 0.0 0 12 ?? DL 1Jan70 0:00.00 (ktrace)
root 1 0.0 0.3 700 184 ?? ILs 1Jan70 0:01.26 /sbin/init --
root 11 0.0 0.0 0 12 ?? RL 1Jan70 1:24.27 (idle)
root 12 0.0 0.0 0 12 ?? WL 1Jan70 1:01.85 (swi1: net)
root 13 0.0 0.0 0 12 ?? WL 1Jan70 7:49.87 (swi6:
tty:sio clock)
root 15 0.0 0.0 0 12 ?? DL 1Jan70 0:17.51 (random)
root 18 0.0 0.0 0 12 ?? WL 1Jan70 0:35.60 (swi3: cambio)
root 23 0.0 0.0 0 12 ?? DL 1Jan70 0:33.97 (usb0)
root 24 0.0 0.0 0 12 ?? DL 1Jan70 0:00.00 (usbtask)
root 25 0.0 0.0 0 12 ?? WL 1Jan70 0:15.98 (irq12: sym0)
root 26 0.0 0.0 0 12 ?? WL 1Jan70 0:33.34 (irq9: xl0)
root 27 0.0 0.0 0 12 ?? WL 1Jan70 0:00.04 (irq1: atkbd0)
root 28 0.0 0.0 0 12 ?? WL 1Jan70 0:00.00 (irq6: fdc0)
root 30 0.0 0.0 0 12 ?? WL 1Jan70 0:00.25 (swi0: tty:sio)
root 2 0.0 0.0 0 12 ?? DL 1Jan70 0:51.73 (pagedaemon)
root 3 0.0 0.0 0 12 ?? DL 1Jan70 0:00.42 (vmdaemon)
root 4 0.0 0.0 0 12 ?? RL 1Jan70 0:01.95 (pagezero)
root 5 0.0 0.0 0 12 ?? DL 1Jan70 0:05.29 (bufdaemon)
root 6 0.0 0.0 0 12 ?? DL 1Jan70 1:26.74 (syncer)
root 7 0.0 0.0 0 12 ?? DL 1Jan70 0:04.12 (vnlru)
root 123 0.0 0.0 220 8 ?? IWs - 0:00.00 adjkerntz -i
root 194 0.0 0.4 628 244 ?? Is Thu09PM 0:09.18 /sbin/natd
-dynamic -log -n tun0
root 241 0.0 0.7 1180 420 ?? Ss Thu09PM 0:04.76
/usr/sbin/syslogd -s -v
root 255 0.0 2.6 2856 1580 ?? Is Thu09PM 0:23.02
/usr/sbin/named -d 1
root 263 0.0 0.0 1332 12 ?? Is Thu09PM 0:00.06 /usr/sbin/rpcbind
root 340 0.0 0.0 1204 12 ?? Is Thu09PM 0:00.03
/usr/sbin/mountd -r
root 342 0.0 0.0 1164 12 ?? Is Thu09PM 0:00.30 nfsd: master
(nfsd)
root 343 0.0 0.0 1116 8 ?? IW - 0:00.00 nfsd: server
(nfsd)
root 344 0.0 0.0 1116 8 ?? IW - 0:00.00 nfsd: server
(nfsd)
root 345 0.0 0.0 1116 8 ?? IW - 0:00.00 nfsd: server
(nfsd)
root 347 0.0 0.0 1116 8 ?? IW - 0:00.00 nfsd: server
(nfsd)
root 376 0.0 0.0 1188 12 ?? Is Thu09PM 0:00.05 /usr/sbin/lpd
root 380 0.0 0.3 1188 168 ?? S Thu09PM 0:02.57 /usr/sbin/lpd
root 396 0.0 1.3 1552 804 ?? Ss Thu09PM 0:26.59 /usr/sbin/ntpd
-p /var/run/ntpd.pid
root 418 0.0 0.1 1132 64 ?? Is Thu09PM 0:00.97 /usr/sbin/usbd
root 437 0.0 1.4 3036 820 ?? Ss Thu09PM 0:19.39 sendmail:
accepting connections (sendmail)
smmsp 440 0.0 0.9 3012 528 ?? Is Thu09PM 0:00.38 sendmail:
Queue runner@00:30:00 for /var/spool/clientmqueue (sendmail)
root 467 0.0 1.5 2332 908 ?? Ss Thu09PM 0:25.86
/usr/local/sbin/httpd
www 485 0.0 0.0 2356 12 ?? I Thu09PM 0:00.01
/usr/local/sbin/httpd
www 486 0.0 0.0 2356 12 ?? I Thu09PM 0:00.01
/usr/local/sbin/httpd
www 487 0.0 1.7 2380 1040 ?? I Thu09PM 0:00.05
/usr/local/sbin/httpd
www 488 0.0 1.8 2392 1060 ?? I Thu09PM 0:00.06
/usr/local/sbin/httpd
www 489 0.0 1.7 2392 1056 ?? I Thu09PM 0:00.07
/usr/local/sbin/httpd
root 490 0.0 1.0 1960 596 ?? Is Thu09PM 0:00.83
/usr/local/sbin/dhcpd
news 495 0.0 0.0 1372 8 con- IW - 0:00.00 nntpd:
accepting connections: loadav -1 (nntpd)
root 501 0.0 0.0 2672 12 ?? Is Thu09PM 0:00.01
/usr/local/sbin/smbd -D
root 504 0.0 1.1 2232 640 ?? Ss Thu09PM 0:15.84
/usr/local/sbin/nmbd -D
root 506 0.0 1.3 2248 800 ?? I Thu09PM 0:00.07
/usr/local/sbin/nmbd -D
root 516 0.0 0.4 1324 220 ?? Is Thu09PM 0:01.25
/usr/sbin/inetd -wW
root 527 0.0 0.5 1232 300 ?? Is Thu09PM 0:05.16 /usr/sbin/cron
root 535 0.0 0.0 1180 8 v1 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv1
root 536 0.0 0.0 1180 8 v2 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv2
root 537 0.0 0.0 1180 8 v3 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv3
root 538 0.0 0.0 1180 8 v4 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv4
root 539 0.0 0.0 1180 8 v5 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv5
root 540 0.0 0.0 1180 8 v6 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv6
root 541 0.0 0.0 1180 8 v7 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv7
ben 546 0.0 2.4 3952 1428 ?? S Thu09PM 3:42.63
/usr/local/sbin/smbd -D
root 585 0.0 0.0 1180 8 v0 IWs+ - 0:00.00
/usr/libexec/getty Pc ttyv0
root 587 0.0 0.3 2488 196 ?? Is Thu09PM 0:03.43 telnetd
root 588 0.0 0.0 1552 8 p0 IWs - 0:00.00 login -h
lodovik -p
ben 589 0.0 0.9 1524 568 p0 I Thu09PM 0:00.42 -tcsh (tcsh)
root 697 0.0 0.7 2488 444 ?? Ss Thu09PM 0:02.41 telnetd
root 698 0.0 0.0 1552 8 p1 IWs - 0:00.00 login -h
lodovik -p
ben 758 0.0 1.5 1632 904 p1 S Thu09PM 0:01.16 -tcsh (tcsh)
ben 790 0.0 0.4 868 220 p1 S Thu09PM 0:34.80 /bin/sh ./vmcheck
www 16058 0.0 1.9 2356 1152 ?? I 10:23AM 0:00.02
/usr/local/sbin/httpd
www 16642 0.0 2.0 2356 1184 ?? I 10:55AM 0:00.02
/usr/local/sbin/httpd
ben 18188 0.0 1.1 1184 660 p0 S+ 12:15PM 0:09.17 uulog -F
root 34740 0.0 1.5 1368 932 ?? I 12:05AM 0:00.34
/usr/local/sbin/vgetty cuaa0
ben 34895 0.0 0.1 188 44 p1 S 12:07AM 0:00.00 sleep 20
root 0 0.0 0.0 0 12 ?? DLs 1Jan70 0:00.73 (swapper)
ben 34897 0.0 0.8 668 500 p1 R+ 12:07AM 0:00.01 ps -aguxwwww
Kind regards,
Ben
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