this post was submitted on 26 Jan 2025
56 points (100.0% liked)

Linux

8428 readers
176 users here now

A community for everything relating to the GNU/Linux operating system (except the memes!)

Also, check out:

Original icon base courtesy of lewing@isc.tamu.edu and The GIMP

founded 2 years ago
MODERATORS
Ategon@programming.dev
anzo@programming.dev
dwraf_of_ignorance@programming.dev
56
Linux Patches Allow Sharing PTEs Between Processes - Can Mean Significant RAM Savings (www.phoronix.com)
submitted 5 months ago* (last edited 5 months ago) by cm0002@lemmy.world to c/linux@programming.dev
4 comments fedilink hide all child comments
 

A set of patches being worked on by Oracle engineers allow for optionally sharing page table entries (PTEs) between processes. For some workloads this can equate to very significant memory savings.

The patches being worked on by Oracle engineers introduce a new in-memory file-system (MSHAREFS) and allow for optionally sharing page table entries between processes. With certain classes of workloads, this can mean very significant memory savings -- huge savings in fact as noted in the patch cover letter after Oracle realized this memory overhead in actual use on a database server.

you are viewing a single comment's thread
view the rest of the comments
[–] cranakis@reddthat.com 9 points 5 months ago

It seems like a good way to introduce a security vulnerability too.