search for: wchan

...e network to the compute clients. A dmesg can be found at http://boyle.che.rpi.edu/~healer/boomer/dmesg /etc/rc.conf can be found at http://boyle.che.rpi.edu/~healer/boomer/rc.conf A listing of installed ports can be found at http://boyle.che.rpi.edu/~healer/boomer/pkg_info The output of psauxwwo wchan against my two crash dumps can be found at http://boyle.che.rpi.edu/~healer/boomer/crash1-psaux-wchan and http://boyle.che.rpi.edu/~healer/boomer/crash2-psaux-wchan I'm not entire convinced this is software, but I've run out of local experts to ask, and can't prove its hardware. --...

As we test the ocfs2 cluster, the cluster is sometime hangs up. I got some information about the dead lock, which cause the cluster hangs up, the sys dir / lock is held and the node did not release it which cause the cluster hangs up. root at cvknode-21:~# ps -e -o pid,stat,comm,wchan=WIDE-WCHAN-COLUMN | grep D PID STAT COMMAND WIDE-WCHAN-COLUMN 7489 D jbd2/sdh-621 jbd2_journal_commit_transaction 16218 D ls iterate_dir 16533 D mkdir dlm_wait_for_lock_mastery 31195 D+ ls iterate_dir So the code reviewed, and I found the order of the lock may wrong. In the...

As we test the ocfs2 cluster, the cluster is sometime hangs up. I got some information about the dead lock, which cause the cluster hangs up, the sys dir / lock is held and the node did not release it which cause the cluster hangs up. root at cvknode-21:~# ps -e -o pid,stat,comm,wchan=WIDE-WCHAN-COLUMN | grep D PID STAT COMMAND WIDE-WCHAN-COLUMN 7489 D jbd2/sdh-621 jbd2_journal_commit_transaction 16218 D ls iterate_dir 16533 D mkdir dlm_wait_for_lock_mastery 31195 D+ ls iterate_dir So the code reviewed, and I found the order of the lock may wrong. In the...

Hi! Since the change to 2.4.22 I've been experimenting problems here, after many tests I have seen what I think is the problem that is causing this. The problem I'm seing is the loopback starts loosing packages, I don't know if this could also happen on other interfaces. I'm testing this by starting a: tcpdump -n -i lo port then a: nc -n -l port >/dev/null and a: nc

Hi all, I have two nodes (A+B) running a DRBD file system (using OCFS2) on /shared. If I start say, an FTP file transfer to my drbd /shared directory on node A, then reboot node B which is the other machine in a Primary-Primary DRBD configuration while the transfer is in progress - node A stops at a similar time that DRBD notices the connection with Node B has been lost (hence crippling both

Hi all, I have two nodes (A+B) running a DRBD file system (using OCFS2) on /shared. If I start say, an FTP file transfer to my drbd /shared directory on node A, then reboot node B which is the other machine in a Primary-Primary DRBD configuration while the transfer is in progress - node A stops at a similar time that DRBD notices the connection with Node B has been lost (hence crippling both

...1 0 92 0 8 15.00 4 0.06 0.00 0 0.00 0.00 0 0.00 3 0 1 0 96 0 8 15.77 30 0.46 0.00 0 0.00 0.00 0 0.00 0 0 2 0 97 I can run 'df', but I can't run 'df -t ufs', as that too just hangs ... According to ps axl, I have the following in WCHAN states: neptune# ps axl | awk '{print $9}' | sort | uniq -c 6 - 1 WCHAN 207 accept 103 inode 2 kqread 412 lockf 68 nanslp 8 pause 1 piperd 13 poll 3 psleep 58 sbwait 1 sched 626 select 1 syncer 3 ttyin 1 vlruwt 8 wait Thoughts? Does anything abo...

...do other work on the machine comfortably, I ran the build under nice, and assigned real-time priority to the two Xorg processes. The build started at about 23:10 last night, and hung at 23:46. The procstat output for the make's process group is: PID PPID PGID SID TSID THR LOGIN WCHAN EMUL COMM 8371 2425 8371 2425 2425 1 mi wait FreeBSD ELF64 make 12254 8371 8371 2425 2425 1 mi wait FreeBSD ELF64 sh 12255 12254 8371 2425 2425 1 mi pause FreeBSD ELF64 tcsh 12262 12255 8371 2425 2425...

Hi list, I have some problems testing ocfs2. My test consist in: #server1: dd if=/dev/random of=/ocfs2_1/test & #server1: dd if=/dev/random of=/ocfs2_2/test & #server1: dd if=/dev/random of=/ocfs2_3/test & ... #server1: dd if=/dev/random of=/ocfs2_12/test & #server1:<Ctrl><Alt><SysRQ>B After that, another node begin recovery. After some time (+- 3min),

...5 vm.swappiness=10 net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 -- Now, the problem: The cluster runs well, but some times a day the systemload grows up from ~0-1 to 40, 500, 2000! CPU is fine, no problems. RAM is free, no problems. "ps -e -o pid,stat,comm,wchan=WIDE-WCHAN-COLUMN | grep D" shows me some apache processes with a state of "D", but with no "WIDE-WCHAN-COLUMN" filled. Here's an example output: -- 3176 D< o2hb-6F81EC9057 - 3392 D jbd2/dm-1-41 - 3393 D ocfs2cmt - 17221 D apache2 - 184...

This is a printout from ps -axl: F UID PID PPID PRI NI SIZE RSS WCHAN STAT TTY TIME COMMAND ... 0 0 81 44 1 0 139 672 12db2f S ? 0:02 nmbd 0 0 97 44 1 0 389 1160 12db2f S ? 0:01 smbd 0 0 112 44 1 0 393 1076 12db2f S ? 0:01 smbd 0 0 114 44 1 0 413 1124 12db2f S...

...(last line of your quote), if you telnet? You show port 993 in above listing, which is the IMAP-over-SSL port, you should not see the greeting with telnet on this port at all. In which state are the various dovecot processes in? Do they wait in non-interruptable sleep? ps -eopid,user,fname,state,wchan,args Do all Dovecot processes hang or just new ones, that try to connect and auth? - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEVAwUBVbhqXHz1H7kL/d9rAQJbKQgAlzwvfDNSlP2oliX1SaCFqeiE+mhcZCz/ XUe2ffnw5AYH0hW7jcur7BHpGZM7ajK1drcGy5OGPYTGEknaMRMnaiBza726Qyjc sDoVZD+YR25gt...

...host. I notice that it has an automatic logout feature after a period of idleness, see below: [wam at centos-5, CFD, 5:52:45pm] 1183 % ll -tr LIST LIST.Update /usr/local/bin/P* /usr/local/bin/*WAM* ; ps -u wam -lf ; uname -a ; date ls: No match. F S UID PID PPID C PRI NI P SZ:RSS WCHAN STIME TTY TIME CMD 5 S wam 2270 2266 0 15 0 * 22540:1788 ? 15:48 ? 00:00:04 sshd: wam at pts/0 0 S wam 2271 2270 0 15 0 * 3144:2720 rt_sig 15:48 pts/0 00:00:00 -tcsh 0 R wam 18249 2271 0 15 0 0 2621:896 - 17:52 pts/0 00:00:00 p...

...51,21 316,06 277,94 15566325 13689004 drbd0 9,22 23,50 80,38 1157641 3958796 Current Load: 08:55:44 up 14:04, 3 users, load average: 19,64, 14,47, 10,49 Load is increasing. The only strange thing I can see is this: # ps -ostat,pid,time,wchan='WCHAN-xxxxxxxxxxxxxxxxxxxx',cmd ax |grep D STAT PID TIME WCHAN-xxxxxxxxxxxxxxxxxxxx CMD D 18713 00:00:00 synchronize_srcu dovecot/imap D 18736 00:00:00 synchronize_srcu dovecot/imap D 18775 00:00:05 synchronize_srcu dovecot/imap D 20330 00:0...

...8 No locals. (kgdb) (kgdb) thread apply all bt Thread 175 (Thread 100290): #0 sched_switch (td=0xc7172000, newtd=0xc6bea780, flags=1) at /usr/src/sys/kern/sched_4bsd.c:959 #1 0xc0555eef in mi_switch (flags=1, newtd=0x0) at /usr/src/sys/kern/kern_synch.c:420 #2 0xc0573ff9 in sleepq_switch (wchan=0x0) at /usr/src/sys/kern/subr_sleepqueue.c:464 #3 0xc05741a1 in sleepq_wait_sig (wchan=0xc6d20010) at /usr/src/sys/kern/subr_sleepqueue.c:560 #4 0xc055592e in msleep (ident=0xc6d20010, mtx=0x0, priority=345, wmesg=0x0, timo=0) at /usr/src/sys/kern/kern_synch.c:209 #5 0xc058aeb9 in ttysleep (...

...e as /tmp. In my test, I am copying a 100 MB file from /root to /tmp repeatedly. While doing this test, I eventually see the copying stop, and any attempts to access /tmp fail - if I even do ls /tmp the command will hang. I suspect kjournald because of the following ps output: PID PPID WCHAN:20 PCPU %MEM PSR COMM 8847 99 start_this_handle 1.1 0.0 28 pdflush 8853 99 schedule_timeout 0.2 0.0 7 pdflush 188 1 kswapd 0.0 0.0 19 kswapd0 8051 1 mtd_blktrans_thread 0.0 0.0 22 mtdblockd 8243 1 kjournald...

...ith FreeBSD-4.7 which is apparently a deadlock. The system is undergoing a filesystem stress test. The machine is pingable, but console and most other features are unresponsive. The console debugger can be accessed. The following information is available with db's "ps". I suspect the wchan of "inode" to be what everything is waiting on. I'm not sure who is supposed to perform the waking. db> ps pid proc addr uid ppid pgrp flag stat wmesg wchan cmd 467 e75df000 e76d6000 0 141 141 000104 3 inode c34ab600 sshd 466 e75df1a0 e76c9000 25...

......done Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining...0 0 done All buffers synced. >From the kernel dump I see the deadlock occurs on unmount of a gjournaled file system. Involved are two processes db> ps pid ppid pgrp uid state wmesg wchan cmd 1 0 1 0 SLs mount dr 0xffffff007f7e559c [init] 18 0 0 0 SL suspwt 0xffffff007f7e5364 [g_journal switcher] (kgdb) info threads 158 Thread 100002 (PID=1: init) sched_switch (td=0xffffff000235e8e0, newtd=<value optimized ou...

Hi, We have a serious issue running on our POP/IMAP servers these days. The load average of a servers spikes up to 400-500 as a uptime command result, for a particular time period , to be specific mostly in noon time and evening, but it last for few minutes only. We have 2 servers running dovecot 1.1.20 , in loadbanlancer, We have used KEEPLIVE (1.1.13) for loadbalacing. Server

(using samba-2.0.7 on Debian Linux 2.2.15) Hi, I'm wondering how do I get around the problem when you smbmount a share on a win32 machine and that machine reboots, the mount becomes a blackhole. If you attempt an 'ls', 'df' or anything that would access that mount point the program then goes into a state of void and cannot be killed, leaving the proc open until reboot