Suggestion: relative CPU/mem scheduling

[BernhardHH]

Summary

When dealing with multiple slaves in varying CPU/memory configurations, it would be great to enable relative scheduling - say, one server has 8 CPUs (150% load), the other has 2 CPUs (120% load) - so least_cpu should consider the 800% vs 200% CPU ceiling and schedule the next job for server 1, even though the absolute CPU load is higher. It would also be great to be able to define CPU / mem thresholds, where no new jobs are assigned (server 2 has less than 90% CPU available, so will receive no new jobs until dropping below 110% load) and expected cpu/mem load per job so jobs would remain in the queue if there are no sufficient ressources available. This would require to get the system CPU/mem load, not only the child process.

This would help us to distribute the load more evenly.

Cheers,

Bernhard