https://bugzilla.mindrot.org/show_bug.cgi?id=3194
Bug ID: 3194
Summary: Please consider lowering [email protected]
cipher priority on AES-NI capable CPU
Product: Portable OpenSSH
Version: 8.3p1
Hardware: amd64
OS: Linux
Status: NEW
Severity: enhancement
Priority: P5
Component: Miscellaneous
Assignee: [email protected]
Reporter: [email protected]
Even in 8.3p1 (using libcrypto) [email protected] is a lot
slower than aes ciphers on AES-NI capable hardware.
[email protected] is 23% faster on Xeon Westmere (the first Intel
CPU with AES-NI) and 47% faster on Kaby Lake.
On Kaby Lake:
[email protected] : 540MB/s
[email protected] : 535MB/s
aes128-ctr : 445MB/s
aes192-ctr : 446MB/s
aes256-ctr : 436MB/s
[email protected] : 364MB/s
Please consider making [email protected] the default.
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