It's totally dependent on the version, chosen algorithm and hardware. With eepc 6.2+, AES-NI FIPS and an SSD drive, there's almost zero detectable degradation.
is there any writeup?
tehnical document on it that we can refer too?
Unfortunately not, because there are no options you have to speed it up or slow it down. The system always runs as fast as it can. It's hardware bound so the performance will be different on each type of machine and drive.
If you need the fastest possible performance, you need to be using eepc7 in aes-ni mode with an intel processor which supports aes-ni, and a SSD drive.
ok thanks Simon.
This mean that we need to test by ourself right?
I'm not sure what you are testing for - but if you want to know the impact of encryption on a specific machine, you need to work that out yourself yes.
Again, there's nothing you can do about it though other than get better hardware.
Are you using the aes-ni algorithm, or one of the older ones?
Currently we;re on version 5.2.11
Well we're in processes on deploying MEE
However there concern from performance team that MEE may impact their laptop performance.
So they asked if we have some proof, write up or a way that MEE did not degrade their performance.
If yes how to actualy overcome this performance is it adding memory or tuning etc.
Since you've mention on AES-Ni feature, i will check with them if their performance laptop have this kind of feature enable.
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Encryption always degrades performance, it's impossible to encrypt something without taking any CPU cycles. The question is, how much.
If they are very sensitive, you will need to upgrade to eepc7 and use SSDs, alongside intel aes-ni equipped processors.
I doubt you'll really notice the encryption in real world use, though if you do raw disk benchmarks of course you will see it - raw disk though is a poor measurement of the "user experience"
I will bring this to the management