Commit b59f92e7 authored by Andy Polyakov's avatar Andy Polyakov
Browse files

x86[_64] assembly pack: add Silvermont performance data. 



Reviewed-by: default avatarRich Salz <rsalz@openssl.org>
parent 0f957287

crypto/aes/asm/bsaes-x86_64.pl

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@@ -40,6 +40,7 @@ 
# Core 2    	9.30		8.69		+7%

# Nehalem(**) 	7.63		6.88		+11%

# Atom	    	17.1		16.4		+4%

# Silvermont	-		12.9

#

# (*)	Comparison is not completely fair, because "this" is ECB,

#	i.e. no extra processing such as counter values calculation
@@ -78,6 +79,7 @@ 
# Core 2	9.98

# Nehalem	7.80

# Atom		17.9

# Silvermont	14.0

#

# November 2011.

#

crypto/aes/asm/vpaes-x86.pl

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# Core 2(**)	28.1/41.4/18.3		21.9/25.2(***)

# Nehalem	27.9/40.4/18.1		10.2/11.9

# Atom		70.7/92.1/60.1		61.1/75.4(***)

# Silvermont	45.4/62.9/24.1		49.2/61.1(***)

#

# (*)	"Hyper-threading" in the context refers rather to cache shared

#	among multiple cores, than to specifically Intel HTT. As vast

crypto/aes/asm/vpaes-x86_64.pl

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# Core 2(**)	29.6/41.1/14.3		21.9/25.2(***)

# Nehalem	29.6/40.3/14.6		10.0/11.8

# Atom		57.3/74.2/32.1		60.9/77.2(***)

# Silvermont	52.7/64.0/19.5		48.8/60.8(***)

#

# (*)	"Hyper-threading" in the context refers rather to cache shared

#	among multiple cores, than to specifically Intel HTT. As vast

crypto/modes/asm/ghash-x86_64.pl

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# Ivy Bridge	1.80(+7%)

# Haswell	0.55(+93%) (if system doesn't support AVX)

# Bulldozer	1.49(+27%)

# Silvermont	2.88(+13%)



# March 2013

#

crypto/sha/asm/sha1-586.pl

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# P4		10.6		-

# AMD K8	7.1		-

# Core2		7.3		6.0/+22%	-

# Atom		12.5		9.3(*)/+35%	-

# Westmere	7.3		5.5/+33%	-

# Sandy Bridge	8.8		6.2/+40%	5.1(**)/+73%

# Ivy Bridge	7.2		4.8/+51%	4.7(**)/+53%

# Haswell	6.5		4.3/+51%	4.1(**)/+58%

# Bulldozer	11.6		6.0/+92%

# VIA Nano	10.6		7.5/+41%

# Atom		12.5		9.3(*)/+35%

# Silvermont	14.5		9.9(*)/+46%

#

# (*)	Loop is 1056 instructions long and expected result is ~8.25.

#	It remains mystery [to me] why ILP is limited to 1.7.

#	The discrepancy is because of front-end limitations, so

#	called MS-ROM penalties, and on Silvermont even rotate's

#	limited parallelism.

#

# (**)	As per above comment, the result is for AVX *plus* sh[rl]d.