)]}'
{
  "commit": "50ea0450cd886f7abb8f2c6dbb8c3a77d7c6edb3",
  "tree": "26a75dbdbcb6f442e999dcd8980cd81f19d42e5a",
  "parents": [
    "a6940a9e28bffeddf810af64c01026071244631b"
  ],
  "author": {
    "name": "Barret Rhoden",
    "email": "brho@cs.berkeley.edu",
    "time": "Mon Aug 14 09:45:21 2017 -0400"
  },
  "committer": {
    "name": "Barret Rhoden",
    "email": "brho@cs.berkeley.edu",
    "time": "Mon Aug 14 17:02:20 2017 -0400"
  },
  "message": "cons: Clamp the amount written to the console\n\nLarge writes to the console take a long time.  Serial writes of about a\npage take O(100ms).  Our kernel is currently non-preemptive, which is\nbased on a model of syscalls not taking too long.\n\nLimiting the write sizes to 80 (the width of an ancient console, which\nRon will love) cuts the syscall time down to a few ms, which is within\nthe quantum of a process.\n\nSigned-off-by: Barret Rhoden \u003cbrho@cs.berkeley.edu\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "b2639daf7ac708deb7e124ab6d6d2ebebf74d9ac",
      "old_mode": 33188,
      "old_path": "kern/drivers/dev/cons.c",
      "new_id": "90d9890af3b08e3bcfab743efd0a45ed59fc085e",
      "new_mode": 33188,
      "new_path": "kern/drivers/dev/cons.c"
    }
  ]
}