Re: OpenLDAP 2.0.7 problems with binds (ITS#988)

[I.C.Smith@liverpool.ac.uk]

I've just noticed that the connections aren't being closed - they're all in 
TIME_WAIT state. I started with a simple C program using 
ldap_simple_bind_s(...) /ldap_unbind(...) -- both return success.

After a *single* command line ldapsearch the connection seems to be stuck 
in TIME_WAIT -- surely this an ubind problem rather than anything to do 
with threads ????

regards,

-ian.

--On Friday, January 26, 2001 9:53 AM +0000 Markus.Storm@mediaWays.net 
wrote:

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> I *cannot* confirm this. We're happily running 2.0.7 on Solaris 7/gcc.
> Memory usage after 50K binds is just 15 MB.
>
> Are all the connections really closed ?
> Have you tried playing with the threads and concurrency limits ?
>
> Markus
>
> I.C.Smith@liverpool.ac.uk wrote:
>>
>> I was using gcc 2.xx. OS was Solaris 2.6, openLDAP version 2.0.7.
>>
>> (H/W: Sun ultra 250, 512 MB RAM - didn't wait around for the inevitable
>> core dump)
>>
>> -ian.
>>
>> --On Thursday, January 25, 2001 11:51 AM -0800 Mike Donnelly
>> <donnelly@sendmail.com> wrote:
>>
>> > I compiled my version under Solaris 8, with gcc 2.xxx, which I've been
>> > told *might* have a problem regarding memory leaks.
>> >
>> > Does anyone know if this is true?
>> >
>> > I'm interested to see if anyone has compiled 2.0.7 using cc instead,
>> > and whether it has the same issue.
>> >
>> > "Dr. Ian C. Smith" wrote:
>> >
>> >> I'd be very interested to hear if anyone else has had similar problems
>> >> and even more interested to hear of any solutions. I performed a
>> >> similar experiment and the server seemed to be leaking huge amounts
>> >> of memory - around 2 MB per 1000 binds (anonymous or simply
>> >> authenticated) wasn't being freed. It seemed to keep rising linearly
>> >> up to 50k binds -- 115 MB of RAM gone !
>> >>
>> >> regards,
>> >>
>> >> -ian.
>> >>
>> >> ----------------------------------------------
>> >> Ian C. Smith,
>> >> e-mail: i.c.smith@liverpool.ac.uk
>> >> Address: Computer Sevices Department,
>> >>          Brownlow Hill Building - room G11,
>> >>          The University of Liverpool,
>> >>          Liverpool L69 3BX.
>> >> --On Wednesday, January 24, 2001 8:03 PM +0000 donnelly@ldapman.org
>> >> wrote:
>> >>
>> >> > Full_Name: Michael Donnelly
>> >> > Version: 2.0.7
>> >> > OS: Solaris 8
>> >> > URL: ftp://ftp.openldap.org/incoming/
>> >> > Submission from: (NULL) (63.211.143.38)
>> >> >
>> >> >
>> >> > I've noticed that using OpenLDAP 2.0.7, the closing of an LDAP
>> >> > connection does not
>> >> > seem to free all the resources used during that connection.
>> >> >
>> >> > For example, bind (as a user) and immedaitely close the connection.
>> >> > (password verification is one reason you might do this.)  Now repeat
>> >> > this 50,000 times.
>> >> >
>> >> > You'll see the amount of RAM used steadily increase, until
>> >> > eventually slapd will
>> >> >
>> >> > core dump.   On my system, a Sun E250 with 2 CPUs and 1GB of ram, I
>> >> > get about 700K
>> >> > connections before the server drops dead.
>> >
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