[tor-bugs] #5440 [Tor Relay]: No AES-NI engine detected

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#5440: No AES-NI engine detected
-------------------------+--------------------------------------------------
 Reporter:  ln5          |          Owner:     
     Type:  enhancement  |         Status:  new
 Priority:  normal       |      Milestone:     
Component:  Tor Relay    |        Version:     
 Keywords:               |         Parent:     
   Points:               |   Actualpoints:     
-------------------------+--------------------------------------------------
 Running master on a CPU identifying itsel (/proc/cpuinfo) as

     Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz

 with openssl-1.0.1 (./Configure --prefix=$HOME/usr shared
 linux-x86_64) I had expected tor to tell me that it found an AES-NI
 engine.  (This would've been wrong, since 1.0.1 doesn't have AES-NI as
 an engine, I learned later.)

 This made Nick make a patch (branch openssl101_aes_ctr in his repo)
 which shows interesting benchmarks.

 src/test/bench cell_ops, run three times on virtually unloaded
 machine, output from the third run:

 On openssl101_aes_ctr w/ openssl-1.0.1:
  Inbound cells: 629.38 ns per cell. (1.24 ns per byte of payload)
 Outbound cells: 693.97 ns per cell. (1.36 ns per byte of payload)

 On openssl101_aes_ctr w/ openssl-0.9.8k:
  Inbound cells: 8823.04 ns per cell. (17.33 ns per byte of payload)
 Outbound cells: 4816.15 ns per cell. (9.46 ns per byte of payload)

 On master w/ openssl-1.0.1:
  Inbound cells: 13861.66 ns per cell. (27.23 ns per byte of payload)
 Outbound cells: 7436.42 ns per cell. (14.61 ns per byte of payload)

 On master w/ openssl-0.9.8k:
  Inbound cells: 8863.88 ns per cell. (17.41 ns per byte of payload)
 Outbound cells: 5265.16 ns per cell. (10.34 ns per byte of payload)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/5440>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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