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<li>Customer increased the encryption key size required during the Diffie-Hellman session key exchange, from 1024 bits to 2048 bits. Most of the time was spent on DH Computation. But could not reproduce 20 folds as said by the customer.</li>
<li>For constant input client requests =3000 ,DH=2048 , the Cpu-Busy-Time clearly jumped from 15.43 sec to 128.98 sec an approx 9x increase .</li>
<li>For constant input client requests =3000 , DH=2048 ,the Turn around time clearly jumped from 7.4 Minutes to 24.9 Minutes an approx 3.3x increase .</li>
<li>Using different ciphers and hashalgoritms AES-256-CBC-SHA256, AES-256-CBC-SHA1 is not making much difference .</li>
<li>gmp function __gmpn_addmul_1 alone uses 51.35% of the total processing tim for DH=1024.
6, gmp function __gmpn_addmul_1 alone uses 81.46% of the total processing time for DH= 2048</li>
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