use percentage in leak mem metrics

also: move to a docker compose format that is compatible with triton

spikes/leak/docker-compose.yml

@@ -1,67 +1,62 @@
-version: '2'
-services:
-  fast-node:
-    build: .
-    environment:
-      - TYPE=node
-    ports:
-     - "8001:8000"
-  fast-artillery:
-    build: .
-    environment:
-      - TYPE=artillery
-      - MODE=fast
-    depends_on:
-      - fast-node
-  another-fast-node:
-    build: .
-    environment:
-      - TYPE=node
-    ports:
-     - "8004:8000"
-  another-fast-artillery:
-    build: .
-    environment:
-      - TYPE=artillery
-      - MODE=another-fast
-    depends_on:
-      - another-fast-node
-  slow-node:
-    build: .
-    environment:
-      - TYPE=node
-    ports:
-     - "8002:8000"
-  slow-artillery:
-    build: .
-    environment:
-      - TYPE=artillery
-      - MODE=slow
-    depends_on:
-      - slow-node
-  plain-node:
-    build: .
-    environment:
-      - TYPE=node
-    ports:
-     - "8003:8000"
-  plain-artillery:
-    build: .
-    environment:
-      - TYPE=artillery
-      - MODE=plain
-    depends_on:
-      - plain-node
-  telemetry:
-    image: prom/prometheus:v1.5.2
-    ports:
-     - "9090:9090"
-    volumes:
-      - ./prometheus.yml:/etc/prometheus/prometheus.yml
-    environment:
-      - TYPE=telemetry
-    depends_on:
-      - fast-node
-      - another-fast-node
-      - slow-node
-      - plain-node
+fast-node:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+fast-artillery:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=fast
+  links:
+    - fast-node:fast-node
+# another-fast-node:
+#   build: .
+#   environment:
+#     - TYPE=node
+#   ports:
+#    - "8000"
+# another-fast-artillery:
+#   build: .
+#   environment:
+#     - TYPE=artillery
+#     - MODE=another-fast
+#   links:
+#     - another-fast-node:another-fast-node
+slow-node:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+slow-artillery:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=slow
+  links:
+    - slow-node:slow-node
+plain-node:
+  build: .
+  environment:
+    - TYPE=node
+  ports:
+   - "8000"
+plain-artillery:
+  build: .
+  environment:
+    - TYPE=artillery
+    - MODE=plain
+  links:
+    - plain-node:plain-node
+telemetry:
+  build: ./prometheus
+  ports:
+   - "9090"
+  environment:
+    - TYPE=telemetry
+  links:
+    - fast-node:fast-node
+    - slow-node:slow-node
+    - plain-node:plain-node

spikes/leak/prometheus.yml

@@ -1,17 +0,0 @@
-scrape_configs:
-  - job_name: 'leak-fast'
-    scrape_interval: 15s
-    static_configs:
-      - targets: ['fast-node:8000', 'another-fast-node:8000']
-  - job_name: 'leak-slow'
-    scrape_interval: 15s
-    static_configs:
-      - targets: ['slow-node:8000']
-  - job_name: 'no-leak'
-    scrape_interval: 15s
-    static_configs:
-      - targets: ['plain-node:8000']
-  # - job_name: 'leak'
-  #   scrape_interval: 1s
-  #   static_configs:
-  #     - targets: ['fast-node:8000', 'another-fast-node:8000', 'slow-node:8000', 'plain-node:8000']

spikes/leak/prometheus/Dockerfile

@@ -0,0 +1,2 @@
+FROM prom/prometheus:v1.5.2
+ADD prometheus.yml /etc/prometheus/

spikes/leak/prometheus/prometheus.yml

@@ -0,0 +1,17 @@
+scrape_configs:
+  # - job_name: 'leak-fast'
+  #   scrape_interval: 15s
+  #   static_configs:
+  #     - targets: ['fast-node:8000', 'another-fast-node:8000']
+  # - job_name: 'leak-slow'
+  #   scrape_interval: 15s
+  #   static_configs:
+  #     - targets: ['slow-node:8000']
+  # - job_name: 'no-leak'
+  #   scrape_interval: 15s
+  #   static_configs:
+  #     - targets: ['plain-node:8000']
+  - job_name: 'leak'
+    scrape_interval: 1s
+    static_configs:
+      - targets: ['fast-node:8000', 'slow-node:8000', 'plain-node:8000']

spikes/leak/scripts/prometheus.js

@@ -46,14 +46,14 @@ const transform = (res) => {
 
 const range = module.exports.range = async ({
   query = [],
-  ago = '1h ago',
+  ago = '24h ago',
   step = '15s',
   hostname = 'localhost'
 }) => {
   const end = timestamp(new Date());
   const start = timestamp(date(ago));
 
-  const ranges = await map(query, async (query) => {
+  const ranges = await map(forceArray(query), async (query) => {
     return await got(url.format({
       protocol: 'http:',
       slashes: true,
@@ -79,11 +79,21 @@ const query = module.exports.query = async ({
   query = []
 }) => {
   const res = await map(query, async (query) => {
+    console.log(url.format({
+  protocol: 'http:',
+  slashes: true,
+  port: '9090',
+  host: hostname,
+  pathname: '/api/v1/query',
+  query: {
+    query: query
+  }
+}));
     return await got(url.format({
       protocol: 'http:',
       slashes: true,
       port: '9090',
-      hostname: hostname,
+      host: hostname,
       pathname: '/api/v1/query',
       query: {
         query: query
@@ -104,7 +114,7 @@ const tree = module.exports.tree = async ({
     protocol: 'http:',
     slashes: true,
     port: '9090',
-    hostname: hostname,
+    host: hostname,
     pathname: '/api/v1/series',
     search: qs.stringify({
       match: query

spikes/leak/src/server/index.js

@@ -1,4 +1,3 @@
-const epimetheus = require('epimetheus');
 const requireDir = require('require-dir');
 const plugins = require('./plugins');
 const routes = requireDir('./routes');
@@ -11,8 +10,6 @@ server.connection({
   port: 8000
 });
 
-epimetheus.instrument(server);
-
 server.register(plugins, (err) => {
   if (err) {
     throw err;

spikes/leak/src/server/metric.js

@@ -1,103 +0,0 @@
-const relativeDate = require('relative-date');
-const statistics = require('simple-statistics');
-const prometheus = require('../../scripts/prometheus');
-const async = require('async');
-
-const cdm = {};
-
-const calc = (sample) => {
-  return {
-    firstQuartile: statistics.quantile(sample, 0.25),
-    median: statistics.median(sample),
-    thirdQuartile: statistics.quantile(sample, 0.75),
-    max: statistics.max(sample),
-    min: statistics.min(sample),
-    stddev: statistics.sampleStandardDeviation(sample)
-  };
-};
-
-const getMem = ({
-  job
-}, fn) => {
-  prometheus.query({
-    query: [`node_memory_heap_used_bytes{job="${job}"}`]
-  }).then((res) => {
-    if (!res || !res[job]) {
-      return null
-    }
-
-    const aggregate = calc(Object.keys(res[job]).map((inst) => {
-      return Number(res[job][inst].node_memory_heap_used_bytes[1]);
-    }));
-
-    const instances = Object.keys(res[job]).reduce((sum, inst) => {
-      return Object.assign(sum, {
-        [inst]: calc([Number(res[job][inst].node_memory_heap_used_bytes[1])])
-      })
-    }, {});
-
-    return {
-      raw: res[job],
-      aggregate,
-      instances
-    };
-  }).then((res) => {
-    return fn(null, res);
-  }).catch((err) => {
-    return fn(err);
-  });
-};
-
-const getStats = (ctx, fn) => {
-  async.parallel({
-    mem: async.apply(getMem, ctx)
-  }, fn);
-};
-
-module.exports = (server) => ({
-  on: (job) => {
-    console.log('on', job);
-
-    if (cdm[job] && (cdm[job].sockets > 0)) {
-      cdm[job].sockets += 1;
-      return;
-    }
-
-    let messageId = 0;
-
-    const update = () => {
-      console.log(`publishing /stats/${job}/${messageId += 1}`);
-
-      getStats({
-        job: job
-      }, (err, stats) => {
-        if (err) {
-          return console.error(err);
-        }
-
-        server.publish(`/stats/${job}`, {
-          when: new Date().getTime(),
-          stats
-        });
-      });
-    };
-
-    cdm[job] = {
-      interval: setInterval(update, 1000),
-      sockets: 1
-    };
-  },
-  off: (job) => {
-    console.log('off', job);
-
-    if (!(cdm[job].sockets -= 1)) {
-      clearInterval(cdm[job].interval);
-    }
-  }
-});
-
-module.exports.tree = (ctx) => {
-  return prometheus.tree({
-    query: ['node_memory_heap_used_bytes']
-  });
-};

spikes/leak/src/server/prom.js

@@ -0,0 +1,43 @@
+const os = require('os');
+const process = require('process');
+// const pidusage = require('pidusage');
+
+const metric = ({ name, desc, type, value }) => `
+# HELP ${name} ${desc}
+# TYPE ${name} ${type || 'gauge'}
+${name} ${value}
+`;
+
+const metrics = {
+  process_mem_used_perc: () => {
+    const free = os.freemem();
+    const total = os.totalmem();
+    const perc = ((total - free) * 100) / total;
+
+    //
+    // console.log({
+    //   available: os.totalmem(),
+    //   free: os.freemem(),
+    //   heapTotal,
+    //   prom: {
+    //     name: 'proc_mem_used_perc',
+    //     desc: 'Process memory used in percentage.',
+    //     value: (heapTotal * 100) / available
+    //   }
+    // });
+    //
+    // pidusage.stat(process.pid, function(err, stat) {
+    //   console.log(stat);
+    // });
+
+    return metric({
+      name: 'proc_mem_used_perc',
+      desc: 'Process memory used in percentage.',
+      value: perc
+    });
+  }
+}
+
+module.exports = () => Object.keys(metrics)
+  .map((name) => metrics[name]())
+  .join('\n');

spikes/leak/src/server/routes/leak.js

@@ -16,16 +16,21 @@ module.exports = (server) => {
     path: '/mem-fast',
     config: {
       handler: (req, reply) => {
+        console.log('got /mem-fast request');
         const start = process.hrtime();
+        const length = (anotherLeak.length || 1);
 
         anotherLeak.push({
-          longStr: new Array(Math.ceil(anotherLeak.length * 2)).map((v, i) => i)
+          longStr: Array.from({
+            length: length * length
+          }, (v, i) => i)
         });
 
-        console.log('mem-fast %d', Math.ceil(anotherLeak.length * 2));
+        console.log('mem-fast', anotherLeak[length - 1].longStr.length);
 
         const end = process.hrtime(start);
         reply(prettyHrtime(end));
+        console.log('sent /mem-fast response');
       }
     }
   });
@@ -35,6 +40,8 @@ module.exports = (server) => {
     path: '/mem-slow',
     config: {
       handler: (req, reply) => {
+        console.log('got /mem-slow request');
+
         const start = process.hrtime();
 
         const originalLeak = theLeak;
@@ -47,7 +54,9 @@ module.exports = (server) => {
         };
 
         theLeak = {
-          longStr: new Array(1000).join('*')
+          longStr: Array.from({
+            length: 1000
+          }, (v, i) => i).join('*')
         };
 
         anotherLeak.push(anotherLeak.length);
@@ -55,6 +64,8 @@ module.exports = (server) => {
 
         const end = process.hrtime(start);
         reply(prettyHrtime(end));
+        console.log('sent /mem-slow response');
+
       }
     }
   });
@@ -64,12 +75,16 @@ module.exports = (server) => {
     path: '/cpu',
     config: {
       handler: (req, reply) => {
+        console.log('got /cpu request');
+
         const start = process.hrtime();
 
         fibonacci(40);
 
         const end = process.hrtime(start);
         reply(prettyHrtime(end));
+
+        console.log('sent /cpu response');
       }
     }
   });

spikes/leak/src/server/routes/metrics.js

@@ -1,26 +1,13 @@
-const Metric = require('../metric');
+const prom = require('../prom');
 
 module.exports = (server) => {
-  const metric = Metric(server);
-
   server.route({
     method: 'GET',
-    path: '/job-tree',
-    config: {
-      handler: (request, reply) => reply(Metric.tree())
+    path: '/metrics',
+    handler: (req, reply) => {
+      console.log('before metrics');
+      reply(prom()).type('text/plain')
+      console.log('after metrics');
     }
   });
-
-  server.subscription('/stats/{id}', {
-    onSubscribe: (socket, path, params, next) => {
-      console.log('onSubscribe');
-      metric.on(params.id);
-      next();
-    },
-    onUnsubscribe: (socket, path, params, next) => {
-      console.log('onUnsubscribe');
-      metric.off(params.id);
-      next();
-    }
-  });
-};
+};