Recent MAC improvements: Test Results

[Chris Rapier]

I know everyone is probably sick of these test results but I only have 
one last set to share. The executive summary is that the mac context 
recycling really does provide a notable performance boost. The use of 
umac also provides a boost but not nearly as dramatic.

As a note: The client was using OpenSSL 0.9.7e. The server was using 
0.9.7a. I also ran tests from and against OpenSSH 3.8.1p1 with no 
problems except for umac failing.

The first line is the test type, average throughput and percent increase 
in throughput performance compared to STD. The next line is the average 
time and the standard deviation. The 3rd line is user time and SD, the 
last is system time and SD. As a note, I'm not comfortable with the 
results from the /dev/zero tests. There may have been contention on the 
line causing problems. The large SD may support that. I'm rerunning the 
tests on a cleaner path. If anyone wants those results just send me some 
mail.

STD /dev/zero	21.3MB/s   0%+
96.11	19.14251411
37.4725	0.205653643
7.5275	0.207969507
	
MAC /dev/zero	44.9MB/s   110.9%+
45.55	0.403944694
34.3865	0.11586176
8.612	0.268241839
	
UMAC /dev/zero  46.3MB/s   117.1%+
44.28	2.828852473
32.829	2.936800801
8.765	0.211149735

HPN /dev/zero   22.9MB/s   7.3%+
89.59	19.79009276
37.468	2.853274389
7.3665	0.456926517
	

STD scp	        30.1MB/s   0%+
68.06	1.233210935
0.4975	0.032097713
3.999	0.10789371
	
MAC scp	        34.0MB/s   14.0%+
60.20	4.034492435
0.5455	0.067782547
4.242	0.403453513

UMAC scp	34.6MB/s   15.8%+
59.26	3.434033381
0.528	0.055212508
4.1835	0.324982186
	
HPN scp	        30.4MB/s   0.9%+
67.42	1.553637159
0.1445	0.019594575
3.2015	0.087676139