Re: AMD Geode LX Security Block (was Re: NetBSD on the Soekris net5501 status report)

["Jared D. McNeill" <jmcneill%invisible.ca@localhost>]

On 18-Jun-07, at 8:16 AM, Pawel Jakub Dawidek wrote:
> I'd suggest correctness verification. ~15GB/s seems to be waaaay  
> too fast:)

You're right, the results vary greatly from run to run. I've seen  
numbers considerably lower than this as well as numbers considerably  
higher. Not exactly sure why, maybe openssl has the timing wrong --  
it claims that it's running for 3s on n size blocks, but then later  
claims that it only ran for a fraction of that period of time, ie:

	Doing aes-128-cbc for 3s on 8192 size blocks: 9972 aes-128-cbc's in  
0.01s

Here's the output of 5 consecutive runs:

	aes-128-cbc       7910.46k    27949.40k   172712.00k   303252.79k  
81788928.00k
	aes-128-cbc       5860.90k    59808.17k   174173.10k   687004.57k   
3189273.85k
	aes-128-cbc       9714.20k    78802.54k    82097.52k   533151.53k    
768714.49k
	aes-128-cbc       5211.17k    38478.90k    90328.36k   432283.24k   
5722589.03k
	aes-128-cbc       7297.00k    65662.57k   144285.57k   581977.72k   
8273306.06k

Cheers,
Jared