On 02/10/2014 03:04 PM, Valerie (Yu-Ching) Peng wrote:

Well, there are some changes that look strange which I need more time to
figure out.
For example, the purpose for the 2 new pkg private methods of poll(Pool)
and release(Pool, Session) of the static class Pool.

New methods are for supporting local pools.


Also, now that every P11Cipher "object" has its own session pool, will
this have any impact on the overall memory usage.

I would think the memory usage would mostly transfer the session from SessionManager to P11Cipher.

It is true that if many P11Cipher objects are created, that could be more idle op session around if P11Cipher objects lingers. But the object session stay in SessionManager, which is probably the bulk of the memory usage.

If P11Cipher object is not re-used much and only have a short life span,
what's the point of having a local session pool to re-use the sessions.

If the P11Cipher object is created sparingly and short lived, creating one session for usage and then getting gc'ed, I would suspect crypto performance isn't a top issue. But I could see that only happening in large crypto deployments using that methodology; however, I'm not sure that is wise development methodology to start with. You'd better insight if such designs are common.


Tony


Thanks,
Valerie



On 02/03/14 10:24, Anthony Scarpino wrote:
Hi,

I'm requesting a review of these changes.  It is mostly from the patch
that Intel provided, but I have made some cosmetic changes.  The
changes significantly improve performance in multithreaded application
using pkcs11.

http://cr.openjdk.java.net/~ascarpino/7107611/webrev.00/

thanks

Tony


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