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< * Copyright (c) 2012, 2017 by Delphix. All rights reserved.
---
> * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
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> /*
> * When performing allocations for a given metaslab, we want to make sure that
> * there are enough IOs to aggregate together to improve throughput. We want to
> * ensure that there are at least 128k worth of IOs that can be aggregated, and
> * we assume that the average allocation size is 4k, so we need the queue depth
> * to be 32 per allocator to get good aggregation of sequential writes.
> */
> int zfs_vdev_def_queue_depth = 32;