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Getting `'clockOffset' of undefined` when following the Getting Started guide

See original GitHub issue

Expected Behavior

Running the example from the “Getting Started” section should work successfully.

Current Behavior

Getting 'clockOffset' of undefined error when following the “Getting Started” example

Cannot read property 'clockOffset' of undefined

➜  clinic doctor --autocannon [ / ] -- node ./slow-io
Running 10s test @ http://localhost:3000/
10 connections

┌─────────┬────────┬─────────┬─────────┬─────────┬────────────┬───────────┬────────────┐
│ Stat    │ 2.5%   │ 50%     │ 97.5%   │ 99%     │ Avg        │ Stdev     │ Max        │
├─────────┼────────┼─────────┼─────────┼─────────┼────────────┼───────────┼────────────┤
│ Latency │ 711 ms │ 1304 ms │ 1861 ms │ 1887 ms │ 1315.23 ms │ 341.29 ms │ 1887.37 ms │
└─────────┴────────┴─────────┴─────────┴─────────┴────────────┴───────────┴────────────┘
┌───────────┬───────┬───────┬────────┬─────────┬─────────┬───────┬───────┐
│ Stat      │ 1%    │ 2.5%  │ 50%    │ 97.5%   │ Avg     │ Stdev │ Min   │
├───────────┼───────┼───────┼────────┼─────────┼─────────┼───────┼───────┤
│ Req/Sec   │ 2     │ 2     │ 8      │ 9       │ 7       │ 2.05  │ 2     │
├───────────┼───────┼───────┼────────┼─────────┼─────────┼───────┼───────┤
│ Bytes/Sec │ 300 B │ 300 B │ 1.2 kB │ 1.35 kB │ 1.05 kB │ 307 B │ 300 B │
└───────────┴───────┴───────┴────────┴─────────┴─────────┴───────┴───────┘

Req/Bytes counts sampled once per second.

70 requests in 10.06s, 10.5 kB read
[    ] Analysing data/Users/cowchimp/temp/node-clinic-doctor-examples-master/node_modules/@nearform/doctor/format/trace-event-decoder.js:49
          self.clockOffset = systemInfo.clockOffset
                                        ^

TypeError: Cannot read property 'clockOffset' of undefined
    at /Users/cowchimp/temp/node-clinic-doctor-examples-master/node_modules/@nearform/doctor/format/trace-event-decoder.js:49:41
    at Endpoint.finish (/Users/cowchimp/temp/node-clinic-doctor-examples-master/node_modules/endpoint/endpoint.js:36:5)
    at Object.onceWrapper (events.js:281:20)
    at Endpoint.emit (events.js:198:15)
    at finishMaybe (_stream_writable.js:646:14)
    at endWritable (_stream_writable.js:663:3)
    at Endpoint.Writable.end (_stream_writable.js:594:5)
    at onend (/Users/cowchimp/temp/node-clinic-doctor-examples-master/node_modules/duplexify/node_modules/readable-stream/lib/_stream_readable.js:627:10)
    at processTicksAndRejections (internal/process/task_queues.js:79:9)

Steps to Reproduce (for bugs)

Test against node-clinic-doctor-examples as detailed here https://clinicjs.org/documentation

git clone git@github.com:nearform/node-clinic-doctor-examples.git
cd node-clinic-doctor-examples
npm install
clinic doctor --autocannon [ / ] -- node ./slow-io

Sample upload

Environment

Clinic.js version: Clinic 5.0.0 and doctor 4.1.0
Node.js version: Node 11.14.0 and npm 6.9.0
Browser name and version: Chrome 78.0.3904.97
Operating system and version: OS X 10.13.6

Issue Analytics

State:
Created 4 years ago
Reactions:8
Comments:9 (6 by maintainers)

Top GitHub Comments

1reaction

goto-bus-stopcommented, Mar 10, 2020

This should be fixed in doctor 📦 4.1.1. Thanks!

1reaction

mrdownscommented, Feb 15, 2020

The same thing is happening to me, both on the sample app and in my own codebase. Ran the sample app after this stopped me from using clinic in my own app.

➜  node-clinic-doctor-examples git:(master) clinic doctor --autocannon [ / ] -- node ./slow-io
? May Clinic.js report anonymous usage statistics to improve the tool over time? No
Running 10s test @ http://localhost:3000/
10 connections

┌─────────┬────────┬─────────┬─────────┬─────────┬────────────┬───────────┬────────────┐
│ Stat    │ 2.5%   │ 50%     │ 97.5%   │ 99%     │ Avg        │ Stdev     │ Max        │
├─────────┼────────┼─────────┼─────────┼─────────┼────────────┼───────────┼────────────┤
│ Latency │ 675 ms │ 1211 ms │ 1883 ms │ 1950 ms │ 1242.78 ms │ 301.25 ms │ 1950.16 ms │
└─────────┴────────┴─────────┴─────────┴─────────┴────────────┴───────────┴────────────┘
┌───────────┬───────┬───────┬────────┬────────┬─────────┬───────┬───────┐
│ Stat      │ 1%    │ 2.5%  │ 50%    │ 97.5%  │ Avg     │ Stdev │ Min   │
├───────────┼───────┼───────┼────────┼────────┼─────────┼───────┼───────┤
│ Req/Sec   │ 2     │ 2     │ 8      │ 10     │ 7.5     │ 2.34  │ 2     │
├───────────┼───────┼───────┼────────┼────────┼─────────┼───────┼───────┤
│ Bytes/Sec │ 300 B │ 300 B │ 1.2 kB │ 1.5 kB │ 1.13 kB │ 350 B │ 300 B │
└───────────┴───────┴───────┴────────┴────────┴─────────┴───────┴───────┘

Req/Bytes counts sampled once per second.

75 requests in 10.07s, 11.3 kB read
[==  ] Analysing data/Users/mdowns/.nvm/versions/node/v10.16.0/lib/node_modules/clinic/node_modules/@nearform/doctor/format/trace-event-decoder.js:49
          self.clockOffset = systemInfo.clockOffset
                                        ^

TypeError: Cannot read property 'clockOffset' of undefined
    at /Users/mdowns/.nvm/versions/node/v10.16.0/lib/node_modules/clinic/node_modules/@nearform/doctor/format/trace-event-decoder.js:49:41
    at Endpoint.finish (/Users/mdowns/.nvm/versions/node/v10.16.0/lib/node_modules/clinic/node_modules/endpoint/endpoint.js:36:5)
    at Object.onceWrapper (events.js:286:20)
    at Endpoint.emit (events.js:203:15)
    at finishMaybe (_stream_writable.js:646:14)
    at endWritable (_stream_writable.js:663:3)
    at Endpoint.Writable.end (_stream_writable.js:594:5)
    at onend (/Users/mdowns/.nvm/versions/node/v10.16.0/lib/node_modules/clinic/node_modules/duplexify/node_modules/readable-stream/lib/_stream_readable.js:646:10)
    at process._tickCallback (internal/process/next_tick.js:61:11)

Clinic 5.0.0 node v10.16.0 npm 6.11.3 OS X 10.15.3

Followed the same steps as above.