Difference between revisions of "GSoC Ideas"
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=== hard limits for CFS scheduler === | === hard limits for CFS scheduler === | ||
| − | Kernel modification (target upstream) | + | ''Kernel modification (target upstream)'' |
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| + | Linux-VServer implements a Token Bucket (TB) scheduler extension which | ||
| + | sits ontop of the Linux scheduler able to limit the CPU resources on | ||
| + | a per guest basis. | ||
| + | |||
| + | Recent Linux provides a Completely Fair Scheduler (CFS) which is missing | ||
| + | a hard limit feature, which should be implemented in way that mainline | ||
| + | (kernel.org) can make use of it. | ||
| + | |||
| + | [[Category:Ideas]] | ||
Latest revision as of 20:34, 21 October 2011
Contents |
[edit] Google Summer of Code Ideas
[edit] Minimalistic Web Frontend
Userspace, php or similar
Web Frontend or Framework to do basic administrational tasks like
- creating and destroying guests
- starting and stopping guests
- monitor status and resources
[edit] libvirt Integration and Testing
Userspace, scripting, testing
preliminary work exists, probably needs to be adapted to recent versions and integrated with the libvirt folks.
[edit] iptables proxy and policy daemon
Kernelside proxy, Userspace policy daemon
Linux-VServer uses IP Isolation, so things like iptables cannot be allowed inside a guest without applying some sanity checks and general host policy.
Part of this is a kernel side proxy mechanism, which will relay the netlink commands issued from e.g. iptables inside a guest to a policy daemon running on the host.
The other part is the policy daemon which has to check the requests for plausibility, and if applicable implement them in a way which doesn't harm the host or other guests (e.g. on a separate chain).
[edit] hard limits for CFS scheduler
Kernel modification (target upstream)
Linux-VServer implements a Token Bucket (TB) scheduler extension which sits ontop of the Linux scheduler able to limit the CPU resources on a per guest basis.
Recent Linux provides a Completely Fair Scheduler (CFS) which is missing a hard limit feature, which should be implemented in way that mainline (kernel.org) can make use of it.
