<![CDATA[robo47.net Feed]]> http://www.robo47.net Sun, 19 Nov 2017 14:16:32 +0000 robo47@robo47.net (Benjamin Steininger) robo47@robo47.net Zend_Feed de-de http://blogs.law.harvard.edu/tech/rss <![CDATA[Kommentar von Paul zu Intel AES-NI dmcrypt benchmark with i7-620M on Debian Squeeze]]> http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-3671 http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-3671 Note: when using other ciphers (i.e. aes-xts-plain or aes-xts-essiv or aes-cbc-benbi or aes-xts-benbi) the performance drops over 50% to around 250MB/sec.

aes-cbc-essiv seems to be the fastest.

it drops further (5-10%) for aes-xts-plain when you use wp512 instead of sha256

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Mon, 12 Jul 2010 23:02:35 +0000
<![CDATA[Kommentar von robo47 zu Intel AES-NI dmcrypt benchmark with i7-620M on Debian Squeeze]]> http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-3673 http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-3673 thx for the info, good to know

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Tue, 13 Jul 2010 07:31:29 +0000
<![CDATA[Kommentar von Benjamin zu Intel AES-NI dmcrypt benchmark with i7-620M on Debian Squeeze]]> http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-6670 http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-6670 Is there a way to deactivate AES-NI for the benchmark ? Would like to compare the result with and without...

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Fri, 29 Oct 2010 23:48:27 +0000
<![CDATA[Kommentar von robo47 zu Intel AES-NI dmcrypt benchmark with i7-620M on Debian Squeeze]]> http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-6700 http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-6700 If you use an unecrypted system and don't have any thing which uses aes, you can unload aesni_intel with modprobe and load the normal aes-driver of your system instead.

If you are running an encrypted system already you need a bios where you can turn it off so that on boot-time the normal aes-driver is loaded, or you need to recompile your kernel without aes-ni support so that the default aes-driver for your system gets loaded.

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Sat, 30 Oct 2010 11:47:56 +0000
<![CDATA[Kommentar von Nj zu Intel AES-NI dmcrypt benchmark with i7-620M on Debian Squeeze]]> http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-7049 http://www.robo47.net/blog/198-Intel-AES-NI-dmcrypt-benchmark-with-i7-620M-on-Debian-Squeeze#comment-7049 Actually, dm-crypt does most work in one thread even for operations on multiple drives at once. I'm running a stock 2.6.32.25 kernel now, and it adds some limited SMP support over my old 2.6.25.6 (it was introduced with 2.6.30).. doesn't help much though, speed improved by maybe 10 or 15%.

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Wed, 10 Nov 2010 01:18:18 +0000