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| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2012-07-22 18:18:37 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-08-20 16:28:10 +0800 |
| commit | 023af608254add7ba037cd634cc5f2fb21ff6420 (patch) | |
| tree | 914c114c38c70841d3c794ea03c414dc110dab0c /crypto | |
| parent | 35a1fc1873dd6deac6c005ead85424a8ee28183a (diff) | |
| download | lwn-023af608254add7ba037cd634cc5f2fb21ff6420.tar.gz lwn-023af608254add7ba037cd634cc5f2fb21ff6420.zip | |
crypto: aesni_intel - improve lrw and xts performance by utilizing parallel AES-NI hardware pipelines
Use parallel LRW and XTS encryption facilities to better utilize AES-NI
hardware pipelines and gain extra performance.
Tcrypt benchmark results (async), old vs new ratios:
Intel Core i5-2450M CPU (fam: 6, model: 42, step: 7)
aes:128bit
lrw:256bit xts:256bit
size lrw-enc lrw-dec xts-dec xts-dec
16B 0.99x 1.00x 1.22x 1.19x
64B 1.38x 1.50x 1.58x 1.61x
256B 2.04x 2.02x 2.27x 2.29x
1024B 2.56x 2.54x 2.89x 2.92x
8192B 2.85x 2.99x 3.40x 3.23x
aes:192bit
lrw:320bit xts:384bit
size lrw-enc lrw-dec xts-dec xts-dec
16B 1.08x 1.08x 1.16x 1.17x
64B 1.48x 1.54x 1.59x 1.65x
256B 2.18x 2.17x 2.29x 2.28x
1024B 2.67x 2.67x 2.87x 3.05x
8192B 2.93x 2.84x 3.28x 3.33x
aes:256bit
lrw:348bit xts:512bit
size lrw-enc lrw-dec xts-dec xts-dec
16B 1.07x 1.07x 1.18x 1.19x
64B 1.56x 1.56x 1.70x 1.71x
256B 2.22x 2.24x 2.46x 2.46x
1024B 2.76x 2.77x 3.13x 3.05x
8192B 2.99x 3.05x 3.40x 3.30x
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Reviewed-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/crypto/Kconfig b/crypto/Kconfig index cbcc0e2eeda0..213fb37be51f 100644 --- a/crypto/Kconfig +++ b/crypto/Kconfig @@ -564,6 +564,8 @@ config CRYPTO_AES_NI_INTEL select CRYPTO_CRYPTD select CRYPTO_ABLK_HELPER_X86 select CRYPTO_ALGAPI + select CRYPTO_LRW + select CRYPTO_XTS help Use Intel AES-NI instructions for AES algorithm. |