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Description
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Currently, the vdev_knob default values (such as vq_max_pending) are hard coded. Though they
can be changed (say via mdb), that's not an acceptable solution.
The one value that's popped up in discussions and on jurassic is vq_max_pending as its default
value of 35 was modeled after a single disk. If a pool is created with vdevs that represent
more than one disk, this number doesn't make as much sense and can hurt performance.
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