(RADIATOR) Memory Leak with PAM

Hugh Irvine hugh at open.com.au
Mon Jul 29 19:32:30 CDT 2002


Hello Mike -

I have copied this mail to Mike for his comments.

regards

Hugh


On Tuesday, July 30, 2002, at 05:40 AM, Forbes Mike wrote:

>
>
> What is the standard memory usage for radiator?  We have 900 or so 
> modems
> authenticating to this, is radiator keeping a state table of the 
> sessions
>  and if so how much space would that take up per user.  I am seeing
> memory continuing to ramp up from almost nothing to 30megs oon up to
> 250megs.
>
> I am still trying to track down a memory leak with radiator 
> authenticating
> via PAM (Kereberos).  I have tested on a SUN which has a different PAM
> infrastructure than RedHat and get the same results as my RedHat
> test.(they could both have the leak I guess).
>
> As far as in depth testing of this,  is this something I can take up 
> with
> tech support, or is there some direction you can point me on doing
> testing (not sure where to go to find a memory leak).
>
> Thanks,
>
> Mike Forbes
>
>  On Sat, 27 Jul 2002, Mike
> McCauley wrote:
>
>> Hello Dan,
>>
>> I wasnt able to reproduce this problem here with Radiator 3.1, your 
>> config
>> file and testing with
>>
>> ./radpwtst -service_type Authenticate-Only -nas_port_type Virtual 
>> -notrace
>> -user mikem-fred -iterations 100000
>>
>> On my linux box, size of raadiusd stabilised quickly at 5616 Kb.
>>
>> What version of Radiator are you using, and what flags are you passing 
>> to your
>> radpwtst?
>>
>>
>> Cheers.
>>
>>
>> On Wed, 24 Jul 2002 08:54, Dan Melomedman wrote:
>>> Hugh Irvine writes:
>>>> Hello Dan -
>>>>
>>>> Mike is travelling this week, but he will look at this when he 
>>>> returns.
>>>>
>>>> In the meantime, can you please tell me how you are testing? And 
>>>> could
>>>> you also send me the details of how you are testing and the outputs 
>>>> of
>>>> "ps", "top" or whatever you are using to measure the memory usage? 
>>>> Also
>>>> please include anything else that might be useful in tracing the 
>>>> problem.
>>>>
>>>> thanks and regards
>>>>
>>>> Hugh
>>>
>>> I am running radpwtst on the same machine recursively with a simple 
>>> bash
>>> script, which does a correct query. Radiator authenticates using 
>>> AuthBy
>>> TEST. Until I stop it.
>>>
>>>
>>>
>>> This is before the script is run:
>>>
>>> ps auxw | egrep 'CPU|radiusd'
>>>
>>> USER        PID  %CPU  %MEM  VSZ  RSS  TT  STAT  STARTED  TIME COMMAND
>>>
>>> radiusd     2202  0.1  0.6  8156 7760  p0  S+    6:34PM   0:01.08
>>>
>>> /usr/local/bin/perl /usr/local/bin/radiusd -config_file ./test.cfg
>>>
>>>
>>>
>>> And after the script is finished (a few hundred querys):
>>>
>>> radiusd     2202  0.7  0.7 10196 9756  p0  S+    6:34PM   0:07.74
>>> /usr/local/bin/perl /usr/local/bin/radiusd -config_file ./test.cf
>>>
>>> Note the difference in size and resident set size values. If the 
>>> server and
>>> client are left to run longer, it will be so large that it will need 
>>> to be
>>> restarted. I can do this automatically with daemontools, but it is 
>>> not a
>>> fix.
>>>
>>> This is not due a to a module load, since even on the first query, the
>>> process does not jump megabytes in size.
>>>
>>> Thanks.
>>
>> --
>> Mike McCauley                               mikem at open.com.au
>> Open System Consultants Pty. Ltd            Unix, Perl, Motif, C++, WWW
>> 24 Bateman St Hampton, VIC 3188 Australia   http://www.open.com.au
>> Phone +61 3 9598-0985                       Fax   +61 3 9598-0955
>>
>> Radiator: the most portable, flexible and configurable RADIUS server
>> anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald,
>> Platypus, Freeside, TACACS+, PAM, external, Active Directory etc etc
>> on Unix, Win95/8, 2000, NT, MacOS 9, MacOS X etc etc
>>
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>
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