)]}'
{
  "commit": "2847b46958ab0bd604e1b3fcafba0f5ba4375833",
  "tree": "35718aed1d18f94ce9f33da940a623da7a3db99e",
  "parents": [
    "23820dbfc79d1c9dce090b4c555994f2bb6a69b3"
  ],
  "author": {
    "name": "Fam Zheng",
    "email": "famz@redhat.com",
    "time": "Thu Mar 26 11:03:12 2015 +0800"
  },
  "committer": {
    "name": "Paolo Bonzini",
    "email": "pbonzini@redhat.com",
    "time": "Tue Apr 28 22:14:11 2015 +0200"
  },
  "message": "configure: Add support for tcmalloc\n\nThis adds \"--enable-tcmalloc\" and \"--disable-tcmalloc\" to allow linking\nto libtcmalloc from gperftools.\n\ntcmalloc is a malloc implementation that works well with threads and is\nfast, so it is good for performance.\n\nIt is disabled by default, because the MALLOC_PERTURB_ flag we use in\ntests doesn\u0027t work with tcmalloc. However we can enable tcmalloc\nspecific heap checker and profilers later.\n\nAn IOPS gain can be observed with virtio-blk-dataplane, other parts of\nQEMU will directly benefit from it as well:\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n                       glibc malloc\n----------------------------------------------------------\nrw         bs         iodepth    bw     iops       latency\nread       4k         1          150    38511      24\n----------------------------------------------------------\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n                         tcmalloc\n----------------------------------------------------------\nrw         bs         iodepth    bw     iops       latency\nread       4k         1          156    39969      23\n----------------------------------------------------------\n\nSigned-off-by: Fam Zheng \u003cfamz@redhat.com\u003e\nMessage-Id: \u003c1427338992-27057-1-git-send-email-famz@redhat.com\u003e\nSigned-off-by: Paolo Bonzini \u003cpbonzini@redhat.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "6969f6f449d0221a0ab038580a3306d635ff0e85",
      "old_mode": 33261,
      "old_path": "configure",
      "new_id": "75a4def8b54eaac6d87da9201e1ae3b2f798b34e",
      "new_mode": 33261,
      "new_path": "configure"
    }
  ]
}