Hi Tony,
On 05/04/22 15:04, Tony He wrote:
Hi JJK,
Yeah, I know this way, but there is still context switching in the
kernel space and user space. I have been looking for a way
to benchmark in the kernel space. I expect there is a kernel module like below:
insmod benchmark.ko AES-256-GCM
(After it's done, this module will exit automatically)
that would be 'tcrypt' then, I guess ; on my Fedora boxen I have
# modinfo tcrypt
filename: /lib/modules/5.16.18-100.fc34.x86_64/kernel/crypto/tcrypt.ko.xz
author: James Morris <jmor...@intercode.com.au>
description: Quick & dirty crypto testing module
[...]
parm: alg:charp
parm: type:uint
parm: mask:uint
parm: mode:int
parm: sec:Length in seconds of speed tests (defaults to zero
which uses CPU cycles instead) (uint)
parm: num_mb:Number of concurrent requests to be used in mb
speed tests (defaults to 8) (uint)
parm: klen:Key length (defaults to 0) (uint)
cheers,
JJK
Jan Just Keijser <jan.just.keij...@gmail.com> 于2022年4月5日周二 19:26写道：
hi Tony,
On 02/04/22 11:40, Tony He wrote:
Hi Antonio,
I am porting ovpn-dco to embedded ARMv8 device with hardware crypto
engine. However the performance is not very good.
It's about 130-140Mbps. I expect more. The SDK already provides kernel
CryptoAPI(CFI) interface to access the crypto engine.
I want to know if the crypto operation is the bottleneck. Do you know
how to benchmark crypto performance in the kernel space?
Any advice is welcome. Thank you!
a quick & dirty way to test the hardware crypto engine is to use the
Linux cryptodev engine in combination with openssl ; it's a bit tricky
to get it working but it *is* a nice way to test hardware crypto.
* https://github.com/cryptodev-linux/cryptodev-linux.git
* do a custom openssl build with
./Configure -DHAVE_CRYPTODEV -DUSE_CRYPTODEV_DIGESTS enable-engine
enable-dso enable-devcryptoeng <platform>
* run openssl speed using
./openssl speed -elapsed -engine devcrypto -evp aes-128-cbc
and compare the results with "-engine devcrypto" removed.
HTH,
JJK
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