2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2012-11-13 11:43:14 +02:00
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2012-07-11 19:37:04 +02:00
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2010-02-16 20:29:01 +08:00
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2012-07-11 19:37:04 +02:00
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2010-02-16 20:29:01 +08:00
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2012-07-11 19:37:04 +02:00
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2010-02-16 20:29:01 +08:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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crypto: cast5 - simplify if-statements
I noticed that by factoring out common rounds from the
branches of the if-statements in the encryption and
decryption functions, the executable file size goes down
significantly, for crypto/cast5.ko from 26688 bytes
to 24336 bytes (amd64).
On my test system, I saw a slight speedup. This is the
first time I'm doing such a benchmark - I found a similar
one on the crypto mailing list, and I hope I did it right?
Before:
# cryptsetup create dm-test /dev/hda2 -c cast5-cbc-plain -s 128
Passsatz eingeben:
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,43484 s, 21,5 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,4089 s, 21,8 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,41091 s, 21,7 MB/s
After:
# cryptsetup create dm-test /dev/hda2 -c cast5-cbc-plain -s 128
Passsatz eingeben:
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,38128 s, 22,0 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,29486 s, 22,8 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,37162 s, 22,1 MB/s
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-11-04 14:58:12 -04:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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crypto: cast5 - simplify if-statements
I noticed that by factoring out common rounds from the
branches of the if-statements in the encryption and
decryption functions, the executable file size goes down
significantly, for crypto/cast5.ko from 26688 bytes
to 24336 bytes (amd64).
On my test system, I saw a slight speedup. This is the
first time I'm doing such a benchmark - I found a similar
one on the crypto mailing list, and I hope I did it right?
Before:
# cryptsetup create dm-test /dev/hda2 -c cast5-cbc-plain -s 128
Passsatz eingeben:
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,43484 s, 21,5 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,4089 s, 21,8 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,41091 s, 21,7 MB/s
After:
# cryptsetup create dm-test /dev/hda2 -c cast5-cbc-plain -s 128
Passsatz eingeben:
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,38128 s, 22,0 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,29486 s, 22,8 MB/s
# dd if=/dev/zero of=/dev/mapper/dm-test bs=1M count=50
52428800 Bytes (52 MB) kopiert, 2,37162 s, 22,1 MB/s
Signed-off-by: Nicolas Kaiser <nikai@nikai.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-11-04 14:58:12 -04:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2010-02-16 20:29:01 +08:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2006-05-16 22:09:29 +10:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2005-10-30 21:25:15 +11:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2012-07-11 19:37:04 +02:00
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2005-04-16 15:20:36 -07:00
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2008-04-05 21:00:57 +08:00
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2005-04-16 15:20:36 -07:00
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2008-04-05 21:00:57 +08:00
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2005-04-16 15:20:36 -07:00
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2008-04-05 21:00:57 +08:00
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2005-04-16 15:20:36 -07:00
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2014-11-20 17:05:53 -08:00
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2015-01-11 18:17:42 +01:00
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