openvpn no option for AES-NI

Gertjan

Nice, you confirmed issue https://redmine.pfsense.org/issues/9646

JeGr

Besides it being pointless to use "idrand" if you want to check AES-NI capability? If you want that wouldn't you either use no engine at all (because automatic detection of openssl) or crypt(dev)?

viragomann

@yon-0
Run openssl speed without stating an engine.

openssl speed -elapsed -evp aes-128-gcm

than run it again with AES-NI turned off:

OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm

yon 0

@viragomann said in openvpn no option for AES-NI:

openssl speed -elapsed -evp aes-128-gcm

openssl speed -elapsed -evp aes-128-gcm
You have chosen to measure elapsed time instead of user CPU time.
Doing aes-128-gcm for 3s on 16 size blocks: 41969785 aes-128-gcm's in 3.01s
Doing aes-128-gcm for 3s on 64 size blocks: 32052818 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 256 size blocks: 14958024 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 1024 size blocks: 4775151 aes-128-gcm's in 3.07s
Doing aes-128-gcm for 3s on 8192 size blocks: 619225 aes-128-gcm's in 3.02s
Doing aes-128-gcm for 3s on 16384 size blocks: 309571 aes-128-gcm's in 3.01s
OpenSSL 1.1.1a-freebsd 20 Nov 2018
built on: reproducible build, date unspecified
options:bn(64,64) rc4(8x,int) des(int) aes(partial) idea(int) blowfish(ptr)
compiler: clang
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes
aes-128-gcm 223257.45k 683793.45k 1276418.05k 1592591.84k 1677789.34k 1686279.07k

yon 0

@JeGr said in openvpn no option for AES-NI:

AES-NI

The question is how do I know that vpn works with AES-NI

viragomann

@yon-0 said in openvpn no option for AES-NI:

The question is how do I know that vpn works with AES-NI

I gave you two benchmarks, one uses AES-NI if available, the other runs without.
So run both, compare the results and you will see if your system benefits from AES-NI or not.

yon 0

@viragomann

OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm
OPENSSL_ia32cap=-0x200000200000000: Command not found.

viragomann

@yon-0
Run it in the GUI.

jimp

Use env to set variables like that, for example:

# env OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm

So... With AES-NI active:

[2.5.0-DEVELOPMENT][]/root: openssl speed -elapsed -evp aes-128-gcm
You have chosen to measure elapsed time instead of user CPU time.
Doing aes-128-gcm for 3s on 16 size blocks: 20389193 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 64 size blocks: 10049858 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 256 size blocks: 3680033 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 1024 size blocks: 1042002 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 8192 size blocks: 134501 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 16384 size blocks: 67574 aes-128-gcm's in 3.00s
OpenSSL 1.1.1a-freebsd  20 Nov 2018
built on: reproducible build, date unspecified
options:bn(64,64) rc4(16x,int) des(int) aes(partial) idea(int) blowfish(ptr) 
compiler: clang
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-128-gcm     108742.36k   214396.97k   314029.48k   355670.02k   367277.40k   369044.14k

With AES-NI disabled:

[2.5.0-DEVELOPMENT][]/root: env OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm
You have chosen to measure elapsed time instead of user CPU time.
Doing aes-128-gcm for 3s on 16 size blocks: 5138331 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 64 size blocks: 1531164 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 256 size blocks: 403121 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 1024 size blocks: 102245 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 8192 size blocks: 12855 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 16384 size blocks: 6428 aes-128-gcm's in 3.00s
OpenSSL 1.1.1a-freebsd  20 Nov 2018
built on: reproducible build, date unspecified
options:bn(64,64) rc4(8x,int) des(int) aes(partial) idea(int) blowfish(ptr) 
compiler: clang
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes    256 bytes   1024 bytes   8192 bytes  16384 bytes
aes-128-gcm      27404.43k    32664.83k    34399.66k    34899.63k    35102.72k    35105.45k

yon 0

@jimp said in openvpn no option for AES-NI:

env OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm

but i test it is slow

env OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm
You have chosen to measure elapsed time instead of user CPU time.
Doing aes-128-gcm for 3s on 16 size blocks: 12357003 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 64 size blocks: 3672554 aes-128-gcm's in 3.02s
Doing aes-128-gcm for 3s on 256 size blocks: 960619 aes-128-gcm's in 3.00s
Doing aes-128-gcm for 3s on 1024 size blocks: 246105 aes-128-gcm's in 3.03s
Doing aes-128-gcm for 3s on 8192 size blocks: 31427 aes-128-gcm's in 3.08s
Doing aes-128-gcm for 3s on 16384 size blocks: 15772 aes-128-gcm's in 3.09s
OpenSSL 1.1.1a-freebsd 20 Nov 2018
built on: reproducible build, date unspecified
options:bn(64,64) rc4(8x,int) des(int) aes(partial) idea(int) blowfish(ptr)
compiler: clang
The 'numbers' are in 1000s of bytes per second processed.
type 16 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 16384 bytes
aes-128-gcm 65904.02k 77740.47k 81972.82k 83137.82k 83638.57k 83525.96k

JeGr

Of course it's slow, the ENV command disables AES-NI. Did you read what @viragomann or @jimp wrote?

@viragomann said in openvpn no option for AES-NI:

Run openssl speed without stating an engine.
openssl speed -elapsed -evp aes-128-gcm

than run it again with AES-NI turned off:
OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm

So of course your test with the ENV in front is slow:

@yon-0 said in openvpn no option for AES-NI:

env OPENSSL_ia32cap="-0x200000200000000" openssl speed -elapsed -evp aes-128-gcm

...
aes-128-gcm 65904.02k 77740.47k 81972.82k 83137.82k 83638.57k 83525.96k

compared to the one before without the ENV trigger:

openssl speed -elapsed -evp aes-128-gcm
...
aes-128-gcm 223257.45k 683793.45k 1276418.05k 1592591.84k 1677789.34k 1686279.07k