diff options
Diffstat (limited to 'openssl/test/times')
| -rw-r--r-- | openssl/test/times | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/openssl/test/times b/openssl/test/times new file mode 100644 index 000000000..738d569b8 --- /dev/null +++ b/openssl/test/times @@ -0,0 +1,113 @@ + +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 bewteen 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 :-). + +Remeber 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 indervidual 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 compatable 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 mesauring 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 performace 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 + |