Hi Frank, Thanks a lot for quick reply. I would really appreciate if you backport the fix into 1.x branch. Please let me know if there is a place where I can track that (any issue tracking system). In case the backporting idea is dropped for 1.x branch, please provide a patch so that I can apply the same on source code. Thanks.
Regards, Praveen. -----Original Message----- From: snmp4j-boun...@agentpp.org [mailto:snmp4j-boun...@agentpp.org] On Behalf Of Frank Fock Sent: Monday, June 03, 2013 2:59 AM To: snmp4j@agentpp.org Subject: Re: [SNMP4J] Performance hotspot in Cipher.getInstance() method call Hi Praveen, SNMP4J is not caching the cipher object. Apparently, the performance overhead of retrieving a Cipher instance is not that great with newer Java versions. Nevertheless, I am currently working on a caching solution, which does not introduce a new bootleneek for multi-threaded usage for SNMP4J 2.x. If it will possible, I will also provide a backport to the 1.x branch. Best regards, Frank Am 30.05.2013 13:03, schrieb Praveen Jain: > We are using SNMP4J version 1.11.4 for a legacy application running in > Java > 1.4 environment. The application behaved slower than expected and > profiling showed that there is hotspot in PrivDES.encrypt() method. > This method in turn calls javax.crypto.Cipher.getInstance(String) > method (apparently on each message transmission) and > Cipher.getInstance(String) is the expensive and CPU intensive call. Can you please suggest if: > > 1. This might be due wrong way of calling SNMP4J api (and also point > to a reference code for correct usage to prevent this problem) > > 2. Is this an inherent problem with Java 1.4 code? > > 3. Is this a problem with SNMP 1.11.4 code (it is not caching the > obtained cipher object)? > > Thanks in advance for the help. > > > > -Praveen > > _______________________________________________ > SNMP4J mailing list > SNMP4J@agentpp.org > http://lists.agentpp.org/mailman/listinfo/snmp4j -- --- AGENT++ Maximilian-Kolbe-Str. 10 73257 Koengen, Germany https://agentpp.com Phone: +49 7024 8688230 Fax: +49 7024 8688231 _______________________________________________ SNMP4J mailing list SNMP4J@agentpp.org http://lists.agentpp.org/mailman/listinfo/snmp4j _______________________________________________ SNMP4J mailing list SNMP4J@agentpp.org http://lists.agentpp.org/mailman/listinfo/snmp4j
