Linked by cloud on Sat 27th Oct 2012 01:05 UTC
Linux A new version of the real-time Linux scheduler called SCHED_DEADLINE has been released on the Linux Kernel Mailing List. For people who missed previous submissions, it consists of a new deadline-based CPU scheduler for the Linux kernel with bandwidth isolation (resource reservation) capabilities. It supports global/clustered multiprocessor scheduling through dynamic task migrations. This new version takes into account previous comments/suggestions and is aligned to the latest mainline kernel. A video about SCHED_DEADLINE is also available on YouTube.
Permalink for comment 540275
To read all comments associated with this story, please click here.
RE[4]: lie-nux at it again.
by Alfman on Sat 27th Oct 2012 19:38 UTC in reply to "RE[3]: lie-nux at it again."
Member since:

Gullible Jones,

"What bothers me is that (by default anyway) is that it can be used by a limited user to create an an effective denial-of-service attack."

I see your point. You can put hardlimits on a user's disk/cpu/ram consumption, but that can easily interfere with what users want to do. I'm not sure any system can distinguish between legitimate resource usage and accidental or malicious usage?

At university some ten years ago, we were using networked sun workstations, I'm sure they'd know something about distributing resources fairly to thousands of users. I don't remember the RAM capacity/quotas, but I do remember the disk quota because I ran into it all the time - soft limits were like 15MB, uck!

Reply Parent Score: 3