We use stunnel process to encrypt Oracle connections from a set of 4-6 application server.

On the DB server, 20 cpus Solaris machine running Oracle, we have more then 400 LWPS for stunnel and the relative 400 oracle connections.

We experience a huge amount of cpu usage (system component), about 40%, after stunnel setup (stunnel 4.15 version)

Is it usual? Do you have experience on similar situation?

Do you have any suggestions to improve cpu usage or to address performance issue/tuning?

Thank you very much

AS

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