Jersey response writer is slow

[sapessi]

• Framework version: 0.8
• Implementations: Jersey

Scenario

The JerseyServletResponseWriter object is slower than expected. In tests running on SAM local the writer was taking ~50ms. Similarly the conversion from Servlet Request to container request is slow (~75ms)

Expected behavior

We expect this object to execute in low single-digit ms

Full log output

{
   "JERSEY_HANDLE_REQUEST":{
      "startTime":1516128024708,
      "stopTime":1516128025504,
      "duration":796
   },
   "JERSEY_COLD_START_INIT":{
      "startTime":1516128024733,
      "stopTime":1516128024758,
      "duration":25
   },
   "JERSEY_FILTER_DOFILTER":{
      "startTime":1516128024768,
      "stopTime":1516128025504,
      "duration":736
   },
   "JERSEY_SERVLET_REQUEST_TO_CONTAINER":{
      "startTime":1516128024768,
      "stopTime":1516128024843,
      "duration":75
   },
   "JERSEY_WRITE_RESPONSE":{
      "startTime":1516128025420,
      "stopTime":1516128025477,
      "duration":57
   },
   "SERVLET_RESPONSE_WRITE":{
      "startTime":1516128025504,
      "stopTime":1516128025510,
      "duration":6
   }
}

[sapessi]

Latest performance improvements provide significant gains on all steps of the process. Resolving this issue. 27% overall improvement.

{
    "JERSEY_HANDLE_REQUEST": {
        "startTime": 1518550345060,
        "stopTime": 1518550345642,
        "duration": 582
    },
    "JERSEY_COLD_START_INIT": {
        "startTime": 1518550345062,
        "stopTime": 1518550345081,
        "duration": 19
    },
    "JERSEY_FILTER_DOFILTER": {
        "startTime": 1518550345082,
        "stopTime": 1518550345642,
        "duration": 560
    },
    "JERSEY_SERVLET_REQUEST_TO_CONTAINER": {
        "startTime": 1518550345082,
        "stopTime": 1518550345142,
        "duration": 60
    },
    "JERSEY_WRITE_RESPONSE": {
        "startTime": 1518550345562,
        "stopTime": 1518550345602,
        "duration": 40
    },
    "SERVLET_RESPONSE_WRITE": {
        "startTime": 1518550345700,
        "stopTime": 1518550345700,
        "duration": 0
    }
}