deadlock in "zoneli" state on 6.2-PRERELEASE
Nikolay Pavlov
quetzal at zone3000.net
Wed Nov 22 12:01:50 PST 2006
Hi.
It seems i have a deadlock on 6.2-PRERELEASE.
This is squid server in accelerator mode.
I can easily trigger it with a high rate of requests.
Squid is locked on some "zoneli" state, i am not sure what it is.
Also i can't KILL proccess even with SIGKILL.
In addition one of sshd proccess is locked too.
Is there any additional information that i could provide?
last pid: 1197; load averages: 0.00, 0.00, 0.00
up 0+01:54:58 14:46:40
31 processes: 1 running, 29 sleeping, 1 zombie
CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle
Mem: 704M Active, 629M Inact, 447M Wired, 12K Cache, 112M Buf, 2109M Free
Swap: 4070M Total, 4070M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
671 squid 1 -16 0 688M 688M zoneli 6:32 0.00% squid
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
680 root 1 96 0 6628K 4760K select 0:02 0.00% snmpd
1170 root 1 96 0 2332K 1588K RUN 0:00 0.00% top
698 root 1 -8 0 7768K 7288K piperd 0:00 0.00% perl5.8.8
634 root 1 96 0 2984K 1808K select 0:00 0.00% ntpd
362 _pflogd 1 -58 0 1600K 1144K bpf 0:00 0.00% pflogd
1097 quetzal 1 96 0 6220K 3220K select 0:00 0.00% sshd
709 root 1 96 0 3464K 2796K select 0:00 0.00% sendmail
1100 root 1 20 0 5036K 3064K pause 0:00 0.00% tcsh
551 root 1 96 0 1352K 996K select 0:00 0.00% syslogd
1085 root 1 4 0 6232K 3204K sbwait 0:00 0.00% sshd
1095 root 1 4 0 6232K 3204K sbwait 0:00 0.00% sshd
1088 quetzal 1 6 0 4724K 2952K ttywai 0:00 0.00% tcsh
719 root 1 8 0 1364K 1060K nanslp 0:00 0.00% cron
1098 quetzal 1 20 0 4704K 2932K pause 0:00 0.00% tcsh
1087 quetzal 1 -16 0 6220K 3220K zoneli 0:00 0.00% sshd
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
654 root 1 96 0 1264K 804K select 0:00 0.00% usbd
692 root 1 96 0 3504K 2656K select 0:00 0.00% sshd
713 smmsp 1 20 0 3364K 2728K pause 0:00 0.00% sendmail
358 root 1 4 0 1536K 1092K sbwait 0:00 0.00% pflogd
769 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
773 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
772 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
771 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
770 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
775 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
774 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
776 root 1 5 0 1320K 896K ttyin 0:00 0.00% getty
497 root 1 114 0 528K 388K select 0:00 0.00% devd
128 root 1 20 0 1228K 680K pause 0:00 0.00% adjkerntz
Also there is some interesting fstat info:
root at accel1:~# fstat -p 671 -v | head -n 40
can't read vnode at 0x0 for pid 671
can't read vnode at 0x0 for pid 671
can't read vnode at 0x0 for pid 671
can't read vnode at 0x0 for pid 671
can't read vnode at 0x0 for pid 671
USER CMD PID FD MOUNT INUM MODE SZ|DV R/W
squid squid 671 root / 2 drwxr-xr-x 512 r
squid squid 671 wd /usr 1908230 drwxr-x--- 512 r
squid squid 671 text /usr 1887228 -r-xr-xr-x 638296 r
squid squid 671 0 - - error -
squid squid 671 1 - - error -
squid squid 671 2 - - error -
squid squid 671 3 - - error -
squid squid 671 4 /var 47121 -rw-r--r-- 2935342 rw
squid squid 671 5* internet dgram udp c96205a0
squid squid 671 6 /var 47131 -rw-r--r-- 48909168 w
squid squid 671 7* pipe c9551198 <-> c9551250 3 rw
squid squid 671 8 /cache 7 -rw-r--r-- 91506636 w
squid squid 671 9* internet stream tcp d2f17ae0
squid squid 671 10* pipe c9551a48 <-> c9551990 0 rw
squid squid 671 11* internet stream tcp c971e3a0
squid squid 671 12* internet dgram udp c9620000
squid squid 671 13 - - error -
squid squid 671 14* internet stream tcp
squid squid 671 15* internet stream tcp d6b211d0
squid squid 671 16* internet stream tcp cf29c740
squid squid 671 17* internet stream tcp d0c9cae0
squid squid 671 18* internet stream tcp c9ebc570
squid squid 671 19* internet stream tcp d49c9000
squid squid 671 20* internet stream tcp d262eae0
squid squid 671 21 /cache 4031491 -rw-r--r-- 2037934 r
squid squid 671 22* internet stream tcp ca1941d0
squid squid 671 23* internet stream tcp d5330570
squid squid 671 24* internet stream tcp d53fe000
squid squid 671 25* internet stream tcp d53a83a0
squid squid 671 26* internet stream tcp
squid squid 671 27* internet stream tcp d2657910
squid squid 671 28* internet stream tcp d964b740
squid squid 671 29* internet stream tcp
squid squid 671 30* internet stream tcp
squid squid 671 31* internet stream tcp ca1d31d0
squid squid 671 32* internet stream tcp d83203a0
squid squid 671 33* internet stream tcp ca24b910
squid squid 671 34 /cache 3984782 -rw-r--r-- 1981893 r
squid squid 671 35* internet stream tcp d7c0b3a0
--
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- Best regards, Nikolay Pavlov. <<<-----------------------------------
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