Displaying 2 results from an estimated 2 matches for "totsegs".
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tot_sgs
2008 Nov 14
2
[PATCH RFC] virtio: use QUEUE_FLAG_CLUSTER in virtio_blk
This allows more requests to fit in the descriptor ring.
Copying 1.7M kernel image 100 times (with sync between)
Before: totsegs = 55661 totlen = 148859962 avg. 2674
After: totsegs = 36097 totlen = 139439355 avg: 3862
Unfortunately, this coalescing is done at blk_rq_map_sg() which is too
late to be optimal: requests have already been limited to the value set
by blk_queue_max_hw_segments(). For us, that value reflects the...
2008 Nov 14
2
[PATCH RFC] virtio: use QUEUE_FLAG_CLUSTER in virtio_blk
This allows more requests to fit in the descriptor ring.
Copying 1.7M kernel image 100 times (with sync between)
Before: totsegs = 55661 totlen = 148859962 avg. 2674
After: totsegs = 36097 totlen = 139439355 avg: 3862
Unfortunately, this coalescing is done at blk_rq_map_sg() which is too
late to be optimal: requests have already been limited to the value set
by blk_queue_max_hw_segments(). For us, that value reflects the...