Details
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Bug
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Status: Closed
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Major
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Resolution: Duplicate
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Description
observing the cluster over the last day - one thing i noticed is that small jobs (single digit tasks) are not doing a good job competing against large jobs. what seems to happen is that:
- large job comes along and needs to wait for a while for other large jobs.
- slots are slowly transfered from one large job to another
- small tasks keep waiting forever.
is this an artifact of deficit based scheduling? it seems that long pending large jobs are out-scheduling small jobs