Re: [Ocf-linux-users] Benchmarking issues

[David M. <dav...@mc...>]

Jivin "Adam Cécile (Le_Vert)" lays it down ...
> Hello OCF guys,
> 
> I'm trying to enable ocf on a Geode LX cpu wich is known to handle 
> aes-128-cbc trhough geode-aes kernel module.
> I rebuilt linux-3.0 with OCF kernel patch and then rebuilt openssl 
> debian's package with -DHAVE_CRYPTODEV -I$(CURDIR)/debian/includes (this 
> directory contains crypto/cryptodev.h)
> Then I loaded ocf, cryptosoft and cryptodev kernel modules...
> 
> Here is the result of my tests using different cipher:
> 
> # With OpenSSL 1.0.0d cryptodev enabled package
> # openssl speed -evp <cipher>
> aes-128-cbc      16761.07k    58822.40k   240275.91k   547942.40k  
> 3126886.40k
> bf-cbc           13351.73k    67366.40k   191564.80k   715946.67k  
> 1298432.00k
> des-ede3-cbc     30708.80k    88375.47k   186675.20k   
> 415846.40k         infk
> 
> #rmmod cryptodev
> aes-128-cbc       3595.73k     3942.16k     4062.50k     8154.89k     
> 8244.06k
> bf-cbc            8260.17k    10052.27k    10728.30k    10923.12k    
> 10929.06k
> des-ede3-cbc      1961.65k     2046.67k     2071.55k     2076.43k     
> 2074.03k
> 
> Results without cryptodev looks fine (slow 500Mhz CPU) but the ones with 
> cryptodev loaded doesn't make any sense !
> There's no reason to have such faster blowfish and des results, as the 
> hardware chip only handles aes-128-cbc.
> Could you please tell me what I'm doing wrong ???

Add the "-elapsed" option to openssl speed to get real numbers.
Otherwise it doesn't count kernel time IIRC,

Cheers,
Davidm

-- 
David McCullough,      dav...@mc...,  Ph:+61 734352815
McAfee - SnapGear      http://www.mcafee.com         http://www.uCdot.org