Problem regarding clearing MibTable content

[Shivram U]

Hi Frank,
	The operating system our agent runs on is Linux. I checked the memory usage
using the ps command. During the addition of row we do see an increase in
memory usage and this falls down too. But the memory usage does not fall
down to the original value. To be more descriptive about the problem, if we
are adding say about 5 rows, and clearing these rows the memory usage
remains constant . Now if we add say about 10 rows and clear the rows the
memory usage increases. This does not fall back to the original value. After
doing this as long as the number of rows added are less than or equal to 10,
the memory usage remains constant. The memory usage again increases if the
number of rows added and cleared is more than 10. Now i have modified our
agent code a little bit not to call content.clearAll(). I keep track of the
rows added and call MibTable::remove_row() to remove the rows now. The
problem still persists. I havent yet used any bound checker like you
suggested. I will use one and will keep you updated about the results.

Thanking you,
Shivram

> -----Original Message-----
> From: Frank Fock [mailto:Frank.Fock____t-online.de]
> Sent: Wednesday, March 07, 2001 11:42 PM
> To: Shivram U
> Cc: Agent++ Mailing List
> Subject: Re: Problem regarding clearing MibTable content
>
>
> Hi Shivram,
>
> Just to be sure: Did you found the memory leak with a
> bounds checker like Purify?
> If you just looking at the process' memory consumption
> then  your perception may be wrong, because on some
> UNIX systems (i.e., Solaris) a process cannot decrease
> its memory usage. This would explain the phenomenon.
>
> Best regards,
> Frank
>
> Shivram U wrote:
>
> >  Hello,    In our agent implementation, for our MibTable classes for
> > every get/getnext request, we first call content.clearAll() to clear
> > the contents of the table. Then we call add_row() for each row we have
> > to add. Right now we see a memory leak in the agent.If the number of
> > rows we are adding remains the same everytime we have no memory leak.
> > But once the number of rows added increases the memory usage of the
> > agent increases. Even after the number of rows added is reduced later
> > the memory usage does not decrease.We didnt try to remove the rows
> > indivisually because we dont want to keep track of each of the rows
> > added.Is there something wrong i am doing here. I am not using the
> > latest version of agent++ software.Thanking you,Shivaram Upadhyayula
> > Wipro Tcchnologies
> > Bangalore
> >
>
>
>
>