Re: Interesting memory leaks ;-)

[Frank Rehberger <Frank Rehberger web de>]

Justin Schoeman wrote:

> Hi all,
>
> My system is finally up and running, and with the long-term operation, 
> I have noticed some memory leaks.  I have put together some simple 
> test applications, and run through some scenarios (which are detailed 
> below).  If anybody has some vague idea why these problems are 
> occurring (before I start tearing orbit apart looking for it), I would 
> appreciate it...
>
> [ All these scenarios describe the client side.  The server stays the 
> same, and is implemented based on the standard skeleton servers. ]
>
> Scenario #1:
> while(1) {
>     import object1 from ior in file;
>     call object1 method;
>     release object1;
> }
>
> The server leaks memory.
>
> Scenario #2:
> import object1 from ior in file;
> while(1) {
>     import object2 from ior in file;
>     call object2 method;
>     release object2;
> }
> release object1;
> No memory is leaked.
>
> Scenario #3:
> As in scenario #2, but the server is restarted while the client is in 
> the loop.
> The server leaks memory.
>
> In all cases where memory leaks, the client application also stalls 
> occasionally (for about 5 sec) before continuing.  The server still 
> responds to other client requests during the stall.
>
> It seems there is some problem on the server side with a client-side 
> last_unref of an object?

yes, seems to.
Thanks  a lot for your  effort, I know it takes much time to figure this 
out.
Currently I can not point to specific code line,  have you got some 
sample code for verification?

Regards, Frank