(ITS#5822) slapd goes into sleeping mode

[egarciab@alcatel-lucent.com]

Full_Name: Eduardo Garcia
Version: slapd 2.1 b102
OS: solaris 5.9
URL: ftp://ftp.openldap.org/incoming/traza_mala
Submission from: (NULL) (194.113.59.80)


Hello,

We are using a customized version of the slapd v2.1 b102. The problem that we
are seeing in the last days is that the slapd process goes into a sleeping mode,
and none ldap request is answered. This problems seems to happend in an
intervals of 72 hours more or less.

The process slapd is alive, but it seems to be stuck.

Last time this problem arised, I run a truss command to get more clues about it.

Above these lines, you can find the ooutput of truss and also a snoop of the
port 389 in the slapd machine.

Could you please look into this problem? Any further info you need , please tell
me.

Thanks a lot in advance

Eduardo

PS: we have implemented a local script to verify if the slapd process is up and
answering and we could see that in the moment when this problem happens, the
slapd did not answer to this local ldap request either. It kept sleeping and
running


This was the output of the truss command:

/1:	lwp_wait(2, 0xFFBFFCC4)		(sleeping...)
/4:	lwp_park(0x00000000, 0)		(sleeping...)
/5:	lwp_park(0x00000000, 0)		(sleeping...)
/7:	lwp_park(0x00000000, 0)		(sleeping...)
/11:	lwp_park(0x00000000, 0)		(sleeping...)
/8:	lwp_park(0x00000000, 0)		(sleeping...)
/12:	lwp_park(0x00000000, 0)		(sleeping...)
/13:	lwp_park(0x00000000, 0)		(sleeping...)
/10:	read(15, 0x002E6476, 2064)	(sleeping...)
/18:	lwp_park(0x00000000, 0)		(sleeping...)
/17:	lwp_park(0x00000000, 0)		(sleeping...)
/16:	lwp_park(0x00000000, 0)		(sleeping...)
/3:	lwp_park(0x00000000, 0)		(sleeping...)
/15:	lwp_park(0x00000000, 0)		(sleeping...)
/9:	lwp_park(0x00000000, 0)		(sleeping...)
/2:	poll(0xFE3FD418, 3, -1)		(sleeping...)
/6:	lwp_park(0x00000000, 0)		(sleeping...)
/14:	lwp_park(0x00000000, 0)		(sleeping...)



I also get a snoop trace in the slapd machine to see which was the messages
received and sent from our machine ---> traza_mala file at
ftp://ftp.openldap.org/incoming/