Tomasz Grabiec
95975151f6
virtio: change descriptor free list to FIFO instead of LIFO
...
Based on observation that with packets comprised of multiple fragments
vhost_get_vq_desc() goes higher in CPU profile. Avi suggested that the
current LIFO handling of free descriptors causes contention on cache
lines between seastar on vhost.
Gives 6-10% boost depending on hardware.
2014-10-29 19:19:54 +02:00
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