Hi Frank, Sorry, but I didn't understand your explanation about possible reasons for OutOfMemory. Can you please clarify this issue?
Thanks, Michael -----Original Message----- From: Frank Fock [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 23, 2008 7:26 PM To: Michael Yavorovsky Cc: Robert Stacy; [email protected] Subject: Re: [SNMP4J] TableUtils getTable problems Hi Michael, SNMP4J does not hold or collect any significant overhead. For big tables, I would recommend using the async method instead of the sync one. The performance can only be better. If you say it is worse, maybe something else happens: A probable cause of an OutOfMemory is an agent that does not return rows in lexicograhpic order or if it returns than there actually are. SNMP4J tries to detect incorrect ordering but especially with sparse tables, it may happen that the internal cache of TableUtils get very big. In such a case, if you can, try to fix the agent or use Snmp.getNext or .getBulk with your own (adapted) order checking. Hope this helps. Best regards, Frank Michael Yavorovsky wrote: > public List getTable(Target target, > OID[] columnOIDs, > OID lowerBoundIndex, > OID upperBoundIndex) > > I'm falling on OutOfMemory while calling this method without upper/lower > indexes. It seems to me that there no way to influence this flow. By the > way, increasing heap size solves the problem ... till bigger tables are > to be retrieved. So I think that SNMP4J data structures have a lot > metadata that makes the response very big. > > -----Original Message----- > From: Robert Stacy [mailto:[EMAIL PROTECTED] > Sent: Wednesday, April 23, 2008 4:27 PM > To: Michael Yavorovsky > Cc: [email protected] > Subject: Re: [SNMP4J] TableUtils getTable problems > > Michael Yavorovsky wrote: >> Hi, >> >> >> >> I'm using TableUtils.getTable (SNMPv1) to get rather big tables >> (something like 2k rows) and on some step I started to get OutOfMemory >> exceptions while running this method. Than I tried to get those tables >> asynchronously and got worse performance. Is there any other solution >> to provide better performance for big SNMP tables? >> >> >> >> >> >> Thanks in advance, >> >> Michael >> >> _______________________________________________ >> SNMP4J mailing list >> [email protected] >> http://lists.agentpp.org/mailman/listinfo/snmp4j >> >> >> > Not sure why you are getting an out of memory exception. I have > actually retrieved much larger tables than that using TableUtils both > synchronously and asynchronously and have had no issues. Check the code > > you are executing when processing the table maybe. > _______________________________________________ > SNMP4J mailing list > [email protected] > http://lists.agentpp.org/mailman/listinfo/snmp4j -- AGENT++ http://www.agentpp.com http://www.mibexplorer.com http://www.mibdesigner.com _______________________________________________ SNMP4J mailing list [email protected] http://lists.agentpp.org/mailman/listinfo/snmp4j
