Agent crashes when more then three managers tries to get/set/walk/getnextsimultaneously

[Frank Fock]

Hi Kjersti,

You do not need to regenerate the sources, but recompile it.
The get_request, get_next_request, etc. methods are already
synchronized by AGENT++ (see Mib::process_get_request, etc.)

Best regards,
Frank

Kjersti Grønnevik wrote:
> Hi Frank
> 
> I have discovered that I only had the versions Agent++ 3.5.1a and Snmp++ 3.1.5
> Do I have to regenerate the new code via the AgentGenerator or can I just use the new libraries directly?
> 
> Another question...
> I use the Get_request and Get_next_request to update the tables within the instrumentation methods. Do I have to add sync_start() and sync_end() when modifying the table?
> 
> Thanks for fast and good reply!
> 
> Best regards,
> Kjersti
> 
> -----Original Message-----
> From: Frank Fock [mailto:Frank.Fock____t-online.de]
> Sent: 2. september 2002 16:58
> To: Kjersti Grønnevik
> Subject: Re: Agent crashes when more then three managers tries to
> get/set/walk/getnextsimultaneously
> 
> 
> Hi Kjersti,
> 
> Did you see already v3.5.5b of AGENT++? Patch level (a)
> fixed some multi-threading issues. These could have caused
> the crashes you encountered. In particular, are you updating
> tables within the instrumentation methods (get_request,
> prepare_set_request, etc.) or by overwriting MibTable::update
> only? If it is the last one, this could be another bug, not
> yet fixed...
> 
> Thanks,
> Frank
> 
> 
> Kjersti Grønnevik wrote:
> 
>>Hi
>>
>>I have the latest version of agent++ and snmp++ running on linux red hat, running multithread.
>>
>>When we started testing our system - this came up:
>>
>>Agent crashes when more then three managers tries to get/set/walk/getnext simultaneously 
>>
>>The agent works just fine when only three managers communicates with it.
>>There are no exceptions or warnings, the agent just crashes...
>>
>>Does anyone have an idea why this happends? Are there a limit to how many threads that can run at the same time? If so where can I change it?
>>I know I have not given much information here and I shall try to explain further if that is requested!
>>
>>I would be very grateful for any suggestions or ideas I can try out!
>>
>>Best regards
>>Kjersti Grønnevik
>>
> 
> 
> 
> 
>