)]}'
{
  "commit": "228e548e602061b08ee8e8966f567c12aa079682",
  "tree": "4c79ecf071d6174d42da1557812a4646d0aaa5af",
  "parents": [
    "1c5cae815d19ffe02bdfda1260949ef2b1806171"
  ],
  "author": {
    "name": "Anton Blanchard",
    "email": "anton@samba.org",
    "time": "Mon May 02 20:21:35 2011 +0000"
  },
  "committer": {
    "name": "David S. Miller",
    "email": "davem@davemloft.net",
    "time": "Thu May 05 11:10:14 2011 -0700"
  },
  "message": "net: Add sendmmsg socket system call\n\nThis patch adds a multiple message send syscall and is the send\nversion of the existing recvmmsg syscall. This is heavily\nbased on the patch by Arnaldo that added recvmmsg.\n\nI wrote a microbenchmark to test the performance gains of using\nthis new syscall:\n\nhttp://ozlabs.org/~anton/junkcode/sendmmsg_test.c\n\nThe test was run on a ppc64 box with a 10 Gbit network card. The\nbenchmark can send both UDP and RAW ethernet packets.\n\n64B UDP\n\nbatch   pkts/sec\n1       804570\n2       872800 (+ 8 %)\n4       916556 (+14 %)\n8       939712 (+17 %)\n16      952688 (+18 %)\n32      956448 (+19 %)\n64      964800 (+20 %)\n\n64B raw socket\n\nbatch   pkts/sec\n1       1201449\n2       1350028 (+12 %)\n4       1461416 (+22 %)\n8       1513080 (+26 %)\n16      1541216 (+28 %)\n32      1553440 (+29 %)\n64      1557888 (+30 %)\n\nWe see a 20% improvement in throughput on UDP send and 30%\non raw socket send.\n\n[ Add sparc syscall entries. -DaveM ]\n\nSigned-off-by: Anton Blanchard \u003canton@samba.org\u003e\nSigned-off-by: David S. Miller \u003cdavem@davemloft.net\u003e\n",
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