Re: FreeBSD 9.1 - openldap slapd lockups, mutex problems
Hi, I've tested it in a 8.3R jail on a 9.1R host, same setup, and the problem is still there. So it may be a kernel bug on 9.1R. On 14/02/2013 10:19:45, Oliver Brandmueller o...@e-gitt.net wrote: Hi, On Thu, Feb 14, 2013 at 03:13:57AM +0100, Pierre Guinoiseau wrote: I have seen openldap spin the cpu and even run out of memory to get killed on some of our test systems running ~9.1-rel with zfs. [...] I've the same problem too, inside a jail, stored on ZFS. I've tried various tuning in slapd.conf, but none fixed the problem. While hanging, db_stat -c shows that all locks are being used, I've tried to set the limit really high, far more than normally needed, but it didn't help. I may have the same problem with amavisd-new but I've to verify that to be sure the symptoms are similar. I have amd64 9.1-STABLE r245456 (about Jan 15) running. I have openldap openldap-server-2.4.33_2 running, depending on libltdl-2.4.2 and db46-4.6.21.4 . The system is zfs only (for the local filesystems, where openldap is running - it has several NFS mounts for other purposes though). It's up and running for about a month now (29 days) and never showed any problematic behaviour regarding to slapd. I have ~10 SEARCH requests per seconds avg and only minor ADD/MODIFY/DELETE operations. It has several binds und unbinds, about 1/10th of the requests. It runs in slurpd slave mode for my master LDAP. zroot/var/db runs with compression=off, dedup=off, zroot is a mirrored pool on 2 Intel SATA SSD drives inside a GPT partition. Swap is on a ZFS zvol. - Oliver -- | Oliver Brandmueller http://sysadm.in/ o...@sysadm.in | |Ich bin das Internet. Sowahr ich Gott helfe. | pgp8DOT5kXi6a.pgp Description: PGP signature
Re: FreeBSD 9.1 - openldap slapd lockups, mutex problems
On 22/01/2013 10:55:48, Adam McDougall mcdou...@egr.msu.edu wrote: On 01/22/13 05:19, Kai Gallasch wrote: Hi. (Im am sending this to the stable list, because it maybe kernel related.. ) On 9.1-RELEASE I am witnessing lockups of the openldap slapd daemon. The slapd runs for some days and then hangs, consuming high amounts of CPU. In this state slapd can only be restarted by SIGKILL. # procstat -kk 71195 PIDTID COMM TDNAME KSTACK 71195 149271 slapd-mi_switch+0x186 sleepq_catch_signals+0x2cc sleepq_wait_sig+0x16 _sleep+0x29d do_wait+0x678 __umtx_op_wait+0x68 amd64_syscall+0x546 Xfast_syscall+0xf7 On UFS2 slapd runs fine, without showing the error. Has anyone else running openldap-server on FreeBSD 9.1 inside a jail seen similar problems? I have seen openldap spin the cpu and even run out of memory to get killed on some of our test systems running ~9.1-rel with zfs. No jails. I'm not sure what would have put load on our test systems other than nightly scripts. I had to focus my attention on other servers so I don't have one to inspect at this point, but I won't be surprised if I see this in production. Thanks for the tip about it being ZFS related, and I'll let you know if I find anything out. This is mostly a me too reply. Hi, I've the same problem too, inside a jail, stored on ZFS. I've tried various tuning in slapd.conf, but none fixed the problem. While hanging, db_stat -c shows that all locks are being used, I've tried to set the limit really high, far more than normally needed, but it didn't help. I may have the same problem with amavisd-new but I've to verify that to be sure the symptoms are similar. I had no problem at all with the same setup on FreeBSD 8.2R, it was my most stable service back then. I've not tried with 9.0R. pgpyxbv1qGu2i.pgp Description: PGP signature
