)]}'
{
  "commit": "851c2a75a6e80c8aa5e713864d98cfb512e7229b",
  "tree": "f5c21c1986901ce53417858bab521668f53db4bf",
  "parents": [
    "e0d686bf4b9d018ba5449f057b486bb5e1fa1a0d"
  ],
  "author": {
    "name": "Jason Wang",
    "email": "jasowang@redhat.com",
    "time": "Thu Apr 23 14:21:47 2015 +0800"
  },
  "committer": {
    "name": "Michael S. Tsirkin",
    "email": "mst@redhat.com",
    "time": "Mon Apr 27 21:02:41 2015 +0200"
  },
  "message": "virtio-pci: speedup MSI-X masking and unmasking\n\nThis patch tries to speed up the MSI-X masking and unmasking through\nthe mapping between vector and queues. With this patch it will there\u0027s\nno need to go through all possible virtqueues, which may help to\nreduce the time spent when doing MSI-X masking/unmasking a single\nvector when more than hundreds or even thousands of virtqueues were\nsupported.\n\nTested with 80 queue pairs virito-net-pci by changing the smp affinity\nin the background and doing netperf in the same time:\n\nBefore the patch:\n5711.70 Gbits/sec\nAfter the patch:\n6830.98 Gbits/sec\n\nAbout 19.6% improvements in throughput.\n\nCc: Michael S. Tsirkin \u003cmst@redhat.com\u003e\nSigned-off-by: Jason Wang \u003cjasowang@redhat.com\u003e\nReviewed-by: Michael S. Tsirkin \u003cmst@redhat.com\u003e\nSigned-off-by: Michael S. Tsirkin \u003cmst@redhat.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "6ae24a04927c3e8da8673c34536bc24497be9590",
      "old_mode": 33188,
      "old_path": "hw/virtio/virtio-pci.c",
      "new_id": "5ea4656a03e91a7dec64098e36e215b919b40c23",
      "new_mode": 33188,
      "new_path": "hw/virtio/virtio-pci.c"
    }
  ]
}