Date: Thu, 14 Feb 2013 03:13:57 +0100 From: Pierre Guinoiseau <pierre@guinoiseau.eu> To: Adam McDougall <mcdouga9@egr.msu.edu>, Kai Gallasch <gallasch@free.de> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 9.1 - openldap slapd lockups, mutex problems Message-ID: <20130214021356.GJ46275@kyleck.poildetroll.net> In-Reply-To: <50FEB684.9040201@egr.msu.edu> References: <D9280700-5105-4068-82E2-5E353C07EC2F@free.de> <50FEB684.9040201@egr.msu.edu>
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--j+MD90OnwjQyWNYt Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 22/01/2013 10:55:48, Adam McDougall <mcdouga9@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 relat= ed.. ) > > > > 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 > > PID TID COMM TDNAME KSTACK > > 71195 149271 slapd - mi_switch+0x186 sleepq_c= atch_signals+0x2cc sleepq_wait_sig+0x16 _sleep+0x29d do_wait+0x678 __umtx_o= p_wait+0x68 amd64_syscall+0x546 Xfast_syscall+0xf7 >=20 > > On UFS2 slapd runs fine, without showing the error. > > Has anyone else running openldap-server on FreeBSD 9.1 inside a jail se= en similar problems? >=20 > I have seen openldap spin the cpu and even run out of memory to get=20 > 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=20 > nightly scripts. I had to focus my attention on other servers so I=20 > don't have one to inspect at this point, but I won't be surprised if I=20 > see this in production. Thanks for the tip about it being ZFS related,= =20 > and I'll let you know if I find anything out. This is mostly a "me too"= =20 > 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 hig= h, far more than normally needed, but it didn't help. I may have the same prob= lem with amavisd-new but I've to verify that to be sure the symptoms are simila= r. 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. --j+MD90OnwjQyWNYt Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlEcSGQACgkQJikNJSAyef+Z5gCgyDvHdqwdX2GuQETp2IYqic6t sRMAmwRq1l3sCIo128AaPMh9ogYp3s4Z =pViJ -----END PGP SIGNATURE----- --j+MD90OnwjQyWNYt--
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