+++ /dev/null
-
-More number for the questions about SSL overheads....
-
-The following numbers were generated on a Pentium pro 200, running Linux.
-They give an indication of the SSL protocol and encryption overheads.
-
-The program that generated them is an unreleased version of ssl/ssltest.c
-which is the SSLeay ssl protocol testing program. It is a single process that
-talks both sides of the SSL protocol via a non-blocking memory buffer
-interface.
-
-How do I read this? The protocol and cipher are reasonable obvious.
-The next number is the number of connections being made. The next is the
-number of bytes exchanged between the client and server side of the protocol.
-This is the number of bytes that the client sends to the server, and then
-the server sends back. Because this is all happening in one process,
-the data is being encrypted, decrypted, encrypted and then decrypted again.
-It is a round trip of that many bytes. Because the one process performs
-both the client and server sides of the protocol and it sends this many bytes
-each direction, multiply this number by 4 to generate the number
-of bytes encrypted/decrypted/MACed. The first time value is how many seconds
-elapsed doing a full SSL handshake, the second is the cost of one
-full handshake and the rest being session-id reuse.
-
-SSLv2 RC4-MD5 1000 x 1 12.83s 0.70s
-SSLv3 NULL-MD5 1000 x 1 14.35s 1.47s
-SSLv3 RC4-MD5 1000 x 1 14.46s 1.56s
-SSLv3 RC4-MD5 1000 x 1 51.93s 1.62s 1024bit RSA
-SSLv3 RC4-SHA 1000 x 1 14.61s 1.83s
-SSLv3 DES-CBC-SHA 1000 x 1 14.70s 1.89s
-SSLv3 DES-CBC3-SHA 1000 x 1 15.16s 2.16s
-
-SSLv2 RC4-MD5 1000 x 1024 13.72s 1.27s
-SSLv3 NULL-MD5 1000 x 1024 14.79s 1.92s
-SSLv3 RC4-MD5 1000 x 1024 52.58s 2.29s 1024bit RSA
-SSLv3 RC4-SHA 1000 x 1024 15.39s 2.67s
-SSLv3 DES-CBC-SHA 1000 x 1024 16.45s 3.55s
-SSLv3 DES-CBC3-SHA 1000 x 1024 18.21s 5.38s
-
-SSLv2 RC4-MD5 1000 x 10240 18.97s 6.52s
-SSLv3 NULL-MD5 1000 x 10240 17.79s 5.11s
-SSLv3 RC4-MD5 1000 x 10240 20.25s 7.90s
-SSLv3 RC4-MD5 1000 x 10240 58.26s 8.08s 1024bit RSA
-SSLv3 RC4-SHA 1000 x 10240 22.96s 11.44s
-SSLv3 DES-CBC-SHA 1000 x 10240 30.65s 18.41s
-SSLv3 DES-CBC3-SHA 1000 x 10240 47.04s 34.53s
-
-SSLv2 RC4-MD5 1000 x 102400 70.22s 57.74s
-SSLv3 NULL-MD5 1000 x 102400 43.73s 31.03s
-SSLv3 RC4-MD5 1000 x 102400 71.32s 58.83s
-SSLv3 RC4-MD5 1000 x 102400 109.66s 59.20s 1024bit RSA
-SSLv3 RC4-SHA 1000 x 102400 95.88s 82.21s
-SSLv3 DES-CBC-SHA 1000 x 102400 173.22s 160.55s
-SSLv3 DES-CBC3-SHA 1000 x 102400 336.61s 323.82s
-
-What does this all mean? Well for a server, with no session-id reuse, with
-a transfer size of 10240 bytes, using RC4-MD5 and a 512bit server key,
-a Pentium pro 200 running Linux can handle the SSLv3 protocol overheads of
-about 49 connections a second. Reality will be quite different :-).
-
-Remember the first number is 1000 full ssl handshakes, the second is
-1 full and 999 with session-id reuse. The RSA overheads for each exchange
-would be one public and one private operation, but the protocol/MAC/cipher
-cost would be quite similar in both the client and server.
-
-eric (adding numbers to speculation)
-
---- Appendix ---
-- The time measured is user time but these number a very rough.
-- Remember this is the cost of both client and server sides of the protocol.
-- The TCP/kernel overhead of connection establishment is normally the
- killer in SSL. Often delays in the TCP protocol will make session-id
- reuse look slower that new sessions, but this would not be the case on
- a loaded server.
-- The TCP round trip latencies, while slowing individual connections,
- would have minimal impact on throughput.
-- Instead of sending one 102400 byte buffer, one 8k buffer is sent until
-- the required number of bytes are processed.
-- The SSLv3 connections were actually SSLv2 compatible SSLv3 headers.
-- A 512bit server key was being used except where noted.
-- No server key verification was being performed on the client side of the
- protocol. This would slow things down very little.
-- The library being used is SSLeay 0.8.x.
-- The normal measuring system was commands of the form
- time ./ssltest -num 1000 -bytes 102400 -cipher DES-CBC-SHA -reuse
- This modified version of ssltest should be in the next public release of
- SSLeay.
-
-The general cipher performance number for this platform are
-
-SSLeay 0.8.2a 04-Sep-1997
-built on Fri Sep 5 17:37:05 EST 1997
-options:bn(64,32) md2(int) rc4(idx,int) des(ptr,risc1,16,long) idea(int) blowfish(ptr2)
-C flags:gcc -DL_ENDIAN -DTERMIO -O3 -fomit-frame-pointer -m486 -Wall -Wuninitialized
-The 'numbers' are in 1000s of bytes per second processed.
-type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes
-md2 131.02k 368.41k 500.57k 549.21k 566.09k
-mdc2 535.60k 589.10k 595.88k 595.97k 594.54k
-md5 1801.53k 9674.77k 17484.03k 21849.43k 23592.96k
-sha 1261.63k 5533.25k 9285.63k 11187.88k 11913.90k
-sha1 1103.13k 4782.53k 7933.78k 9472.34k 10070.70k
-rc4 10722.53k 14443.93k 15215.79k 15299.24k 15219.59k
-des cbc 3286.57k 3827.73k 3913.39k 3931.82k 3926.70k
-des ede3 1443.50k 1549.08k 1561.17k 1566.38k 1564.67k
-idea cbc 2203.64k 2508.16k 2538.33k 2543.62k 2547.71k
-rc2 cbc 1430.94k 1511.59k 1524.82k 1527.13k 1523.33k
-blowfish cbc 4716.07k 5965.82k 6190.17k 6243.67k 6234.11k
- sign verify
-rsa 512 bits 0.0100s 0.0011s
-rsa 1024 bits 0.0451s 0.0012s
-rsa 2048 bits 0.2605s 0.0086s
-rsa 4096 bits 1.6883s 0.0302s
-
projects / cassiopeia.git / blobdiff