Crypto algorithm
An interesting point would be the impact of the specific cryptographic algorithms on the performance. AFAIK Rijndael was chosen as AES because of its low performance requirements. But how does it differ from the other cryptographic algrithms in the kernel?
Announcement
Collapse
No announcement yet.
The Performance Impact Of Linux Disk Encryption On Ubuntu 14.04 LTS
Collapse
X
-
so can it be worked around by creating a home partition? And does Full disk mean full disc or does it mean full partition?
Leave a comment:
-
Originally posted by david_lynch View PostWTH? I don't see how an encrypted home dir would affect the benchmarks unless you're running the benchmarks inside the encrypted home dir. If that is the case, these numbers perhaps represent only a wildly non-typical "corner-case" performance-wise.
All of the performance critical system services I've ever seen have typically been run from /opt or /usr - never from a user's home dir.
Leave a comment:
-
Originally posted by Pajn View PostBenchmarking /opt or /usr if it's the home dir that's encrypted would be pretty meningless...
The point here is: If the use case for an encrypted /home setup is different from the full-disk setup, then comparing these setups may not have a realistic meaning...
Based on these tests results it seems clear that "encrypting the whole disk is much better". However, if the test was a "regular usage"* (browse web, check mail, edit documents, play music, whatever...) which would be the actual performance impact?
* I understand that "Regular usage" is a concept either difficult or impossible to define and your regular usage may be different from mine.
Leave a comment:
-
Interesting. I'm using full disk encryption on my server/htpc and have never noticed any
performance degree even though it isn't the most powerful creature (Zbox ID18). Now I
can also confirm that by numbers.
Originally posted by david_lynch View PostWTH? I don't see how an encrypted home dir would affect the benchmarks unless you're running the benchmarks inside the encrypted home dir. If that is the case, these numbers perhaps represent only a wildly non-typical "corner-case" performance-wise.
All of the performance critical system services I've ever seen have typically been run from /opt or /usr - never from a user's home dir.
Leave a comment:
-
Originally posted by david_lynch View PostWTH? I don't see how an encrypted home dir would affect the benchmarks unless you're running the benchmarks inside the encrypted home dir. If that is the case, these numbers perhaps represent only a wildly non-typical "corner-case" performance-wise.
All of the performance critical system services I've ever seen have typically been run from /opt or /usr - never from a user's home dir.
Leave a comment:
-
Originally posted by phoronix View PostPhoronix: The Performace Impact Of Linux Disk Encryption On Ubuntu 14.04 LTS
For any Linux laptop users or those concerned about their data's safety on production systems, I highly recommend utilizing disk encryption for safeguarding the data. However, what's the performance impact like these days? In this article with the current development snapshot of Ubuntu 14.04 LTS on a modern Intel ultrabook we're looking at the impact (including CPU utilization) of using an eCryptfs-based home directory encryption and LUKS-based full-disk encryption on Ubuntu Linux.
http://www.phoronix.com/vr.php?view=19979
All of the performance critical system services I've ever seen have typically been run from /opt or /usr - never from a user's home dir.
Leave a comment:
-
I don't use Ubuntu & friends, but I would assume that the comment regarding to /tmp is moot; /tmp is ordinarily a tmpfs these days.
Leave a comment:
-
The Performance Impact Of Linux Disk Encryption On Ubuntu 14.04 LTS
Phoronix: The Performace Impact Of Linux Disk Encryption On Ubuntu 14.04 LTS
For any Linux laptop users or those concerned about their data's safety on production systems, I highly recommend utilizing disk encryption for safeguarding the data. However, what's the performance impact like these days? In this article with the current development snapshot of Ubuntu 14.04 LTS on a modern Intel ultrabook we're looking at the impact (including CPU utilization) of using an eCryptfs-based home directory encryption and LUKS-based full-disk encryption on Ubuntu Linux.
Tags: None
Leave a comment: