Merge pull request #556 from CartoDB/gc-stats

Get fine-grained garbage collection stats

app.js

@@ -196,9 +196,46 @@ if (global.gc && isGteMinVersion(process.version, 6)) {
 
     if (gcInterval > 0) {
         setInterval(function gcForcedCycle() {
-            var start = Date.now();
             global.gc();
-            statsClient.timing('sqlapi.gc', Date.now() - start);
         }, gcInterval);
     }
 }
+
+const gcStats = require('gc-stats')();
+
+gcStats.on('stats', function ({ pauseMS, gctype }) {
+    statsClient.timing('sqlapi.gc', pauseMS);
+    statsClient.timing(`sqlapi.gctype.${getGCTypeValue(gctype)}`, pauseMS);
+});
+
+function getGCTypeValue (type) {
+    // 1: Scavenge (minor GC)
+    // 2: Mark/Sweep/Compact (major GC)
+    // 4: Incremental marking
+    // 8: Weak/Phantom callback processing
+    // 15: All
+    let value;
+
+    switch (type) {
+        case 1:
+            value = 'Scavenge';
+            break;
+        case 2:
+            value = 'MarkSweepCompact';
+            break;
+        case 4:
+            value = 'IncrementalMarking';
+            break;
+        case 8:
+            value = 'ProcessWeakCallbacks';
+            break;
+        case 15:
+            value = 'All';
+            break;
+        default:
+            value = 'Unkown';
+            break;
+    }
+
+    return value;
+}

npm-shrinkwrap.json

@@ -78,9 +78,9 @@
       "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz"
     },
     "bindings": {
-      "version": "1.3.0",
+      "version": "1.3.1",
       "from": "bindings@>=1.2.1 <2.0.0",
-      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.3.0.tgz"
+      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.3.1.tgz"
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     "bintrees": {
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@@ -424,6 +424,347 @@
       "from": "fresh@0.3.0",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-0.3.0.tgz"
     },
+    "gc-stats": {
+      "version": "1.2.1",
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+      "resolved": "https://registry.npmjs.org/gc-stats/-/gc-stats-1.2.1.tgz",
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+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz"
+        },
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+          "from": "aproba@1.2.0",
+          "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz"
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+        "are-we-there-yet": {
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+          "from": "are-we-there-yet@1.1.5",
+          "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz"
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+          "from": "brace-expansion@1.1.11",
+          "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz"
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+        "chownr": {
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@@ -697,9 +1038,9 @@
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@@ -726,9 +1067,9 @@
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+      "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.0.tgz"
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@@ -1082,9 +1423,9 @@
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package-lock.json

@@ -884,6 +884,422 @@
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+        },
+        "gauge": {
+          "version": "2.7.4",
+          "bundled": true,
+          "requires": {
+            "aproba": "^1.0.3",
+            "console-control-strings": "^1.0.0",
+            "has-unicode": "^2.0.0",
+            "object-assign": "^4.1.0",
+            "signal-exit": "^3.0.0",
+            "string-width": "^1.0.1",
+            "strip-ansi": "^3.0.1",
+            "wide-align": "^1.1.0"
+          }
+        },
+        "glob": {
+          "version": "7.1.2",
+          "bundled": true,
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.0.4",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        },
+        "has-unicode": {
+          "version": "2.0.1",
+          "bundled": true
+        },
+        "iconv-lite": {
+          "version": "0.4.24",
+          "bundled": true,
+          "requires": {
+            "safer-buffer": ">= 2.1.2 < 3"
+          }
+        },
+        "ignore-walk": {
+          "version": "3.0.1",
+          "bundled": true,
+          "requires": {
+            "minimatch": "^3.0.4"
+          }
+        },
+        "inflight": {
+          "version": "1.0.6",
+          "bundled": true,
+          "requires": {
+            "once": "^1.3.0",
+            "wrappy": "1"
+          }
+        },
+        "inherits": {
+          "version": "2.0.3",
+          "bundled": true
+        },
+        "ini": {
+          "version": "1.3.5",
+          "bundled": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "bundled": true,
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "isarray": {
+          "version": "1.0.0",
+          "bundled": true
+        },
+        "minimatch": {
+          "version": "3.0.4",
+          "bundled": true,
+          "requires": {
+            "brace-expansion": "^1.1.7"
+          }
+        },
+        "minimist": {
+          "version": "0.0.8",
+          "bundled": true
+        },
+        "minipass": {
+          "version": "2.3.5",
+          "bundled": true,
+          "requires": {
+            "safe-buffer": "^5.1.2",
+            "yallist": "^3.0.0"
+          }
+        },
+        "minizlib": {
+          "version": "1.1.1",
+          "bundled": true,
+          "requires": {
+            "minipass": "^2.2.1"
+          }
+        },
+        "mkdirp": {
+          "version": "0.5.1",
+          "bundled": true,
+          "requires": {
+            "minimist": "0.0.8"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "bundled": true
+        },
+        "needle": {
+          "version": "2.2.4",
+          "bundled": true,
+          "requires": {
+            "debug": "^2.1.2",
+            "iconv-lite": "^0.4.4",
+            "sax": "^1.2.4"
+          },
+          "dependencies": {
+            "sax": {
+              "version": "1.2.4",
+              "bundled": true
+            }
+          }
+        },
+        "node-pre-gyp": {
+          "version": "0.11.0",
+          "bundled": true,
+          "requires": {
+            "detect-libc": "^1.0.2",
+            "mkdirp": "^0.5.1",
+            "needle": "^2.2.1",
+            "nopt": "^4.0.1",
+            "npm-packlist": "^1.1.6",
+            "npmlog": "^4.0.2",
+            "rc": "^1.2.7",
+            "rimraf": "^2.6.1",
+            "semver": "^5.3.0",
+            "tar": "^4"
+          }
+        },
+        "nopt": {
+          "version": "4.0.1",
+          "bundled": true,
+          "requires": {
+            "abbrev": "1",
+            "osenv": "^0.1.4"
+          }
+        },
+        "npm-bundled": {
+          "version": "1.0.5",
+          "bundled": true
+        },
+        "npm-packlist": {
+          "version": "1.1.12",
+          "bundled": true,
+          "requires": {
+            "ignore-walk": "^3.0.1",
+            "npm-bundled": "^1.0.1"
+          }
+        },
+        "npmlog": {
+          "version": "4.1.2",
+          "bundled": true,
+          "requires": {
+            "are-we-there-yet": "~1.1.2",
+            "console-control-strings": "~1.1.0",
+            "gauge": "~2.7.3",
+            "set-blocking": "~2.0.0"
+          }
+        },
+        "number-is-nan": {
+          "version": "1.0.1",
+          "bundled": true
+        },
+        "object-assign": {
+          "version": "4.1.1",
+          "bundled": true
+        },
+        "once": {
+          "version": "1.4.0",
+          "bundled": true,
+          "requires": {
+            "wrappy": "1"
+          }
+        },
+        "os-homedir": {
+          "version": "1.0.2",
+          "bundled": true
+        },
+        "os-tmpdir": {
+          "version": "1.0.2",
+          "bundled": true
+        },
+        "osenv": {
+          "version": "0.1.5",
+          "bundled": true,
+          "requires": {
+            "os-homedir": "^1.0.0",
+            "os-tmpdir": "^1.0.0"
+          }
+        },
+        "path-is-absolute": {
+          "version": "1.0.1",
+          "bundled": true
+        },
+        "process-nextick-args": {
+          "version": "2.0.0",
+          "bundled": true
+        },
+        "rc": {
+          "version": "1.2.8",
+          "bundled": true,
+          "requires": {
+            "deep-extend": "^0.6.0",
+            "ini": "~1.3.0",
+            "minimist": "^1.2.0",
+            "strip-json-comments": "~2.0.1"
+          },
+          "dependencies": {
+            "minimist": {
+              "version": "1.2.0",
+              "bundled": true
+            }
+          }
+        },
+        "readable-stream": {
+          "version": "2.3.6",
+          "bundled": true,
+          "requires": {
+            "core-util-is": "~1.0.0",
+            "inherits": "~2.0.3",
+            "isarray": "~1.0.0",
+            "process-nextick-args": "~2.0.0",
+            "safe-buffer": "~5.1.1",
+            "string_decoder": "~1.1.1",
+            "util-deprecate": "~1.0.1"
+          }
+        },
+        "rimraf": {
+          "version": "2.6.2",
+          "bundled": true,
+          "requires": {
+            "glob": "^7.0.5"
+          }
+        },
+        "safe-buffer": {
+          "version": "5.1.2",
+          "bundled": true
+        },
+        "safer-buffer": {
+          "version": "2.1.2",
+          "bundled": true
+        },
+        "semver": {
+          "version": "5.5.0",
+          "bundled": true
+        },
+        "set-blocking": {
+          "version": "2.0.0",
+          "bundled": true
+        },
+        "signal-exit": {
+          "version": "3.0.2",
+          "bundled": true
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "bundled": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "string_decoder": {
+          "version": "1.1.1",
+          "bundled": true,
+          "requires": {
+            "safe-buffer": "~5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "bundled": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        },
+        "strip-json-comments": {
+          "version": "2.0.1",
+          "bundled": true
+        },
+        "tar": {
+          "version": "4.4.6",
+          "bundled": true,
+          "requires": {
+            "chownr": "^1.0.1",
+            "fs-minipass": "^1.2.5",
+            "minipass": "^2.3.3",
+            "minizlib": "^1.1.0",
+            "mkdirp": "^0.5.0",
+            "safe-buffer": "^5.1.2",
+            "yallist": "^3.0.2"
+          }
+        },
+        "util-deprecate": {
+          "version": "1.0.2",
+          "bundled": true
+        },
+        "wide-align": {
+          "version": "1.1.3",
+          "bundled": true,
+          "requires": {
+            "string-width": "^1.0.2 || 2"
+          }
+        },
+        "wrappy": {
+          "version": "1.0.2",
+          "bundled": true
+        },
+        "yallist": {
+          "version": "3.0.2",
+          "bundled": true
+        }
+      }
+    },
     "generate-function": {
       "version": "2.3.1",
       "resolved": "https://registry.npmjs.org/generate-function/-/generate-function-2.3.1.tgz",

package.json

@@ -26,6 +26,7 @@
     "cartodb-redis": "2.1.0",
     "debug": "2.2.0",
     "express": "~4.13.3",
+    "gc-stats": "1.2.1",
     "log4js": "cartodb/log4js-node#cdb",
     "lru-cache": "~2.5.0",
     "mkdirp": "0.5.1",