Trying out the new Sentry Performance monitoring feature

Pipfile.lock

{
    "_meta": {
        "hash": {
            "sha256": "4c3c3988cee9ef0aabedb0fe77f041c143b7c7fdde2feb775bb0578948a09288"
        },
        "pipfile-spec": 6,
        "requires": {
            "python_version": "3.7"
        },
        "sources": [
            {
                "name": "pypi",
                "url": "https://pypi.org/simple",
                "verify_ssl": true
            }
        ]
    },
    "default": {
        "certifi": {
            "hashes": [
                "sha256:5930595817496dd21bb8dc35dad090f1c2cd0adfaf21204bf6732ca5d8ee34d3",
                "sha256:8fc0819f1f30ba15bdb34cceffb9ef04d99f420f68eb75d901e9560b8749fc41"
            ],
            "version": "==2020.6.20"
        },
        "sentry-sdk": {
            "hashes": [
                "sha256:da06bc3641e81ec2c942f87a0676cd9180044fa3d1697524a0005345997542e2",
                "sha256:e80d61af85d99a1222c1a3e2a24023618374cd50a99673aa7fa3cf920e7d813b"
            ],
            "index": "pypi",
            "version": "==0.16.0"
        },
        "urllib3": {
            "hashes": [
                "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527",
                "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"
            ],
            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
            "version": "==1.25.9"
        }
    },
    "develop": {}
}

run.log

 [sentry] DEBUG: Setting up integrations (with default = True)
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.django.DjangoIntegration: Django not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.flask.FlaskIntegration: Flask is not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.bottle.BottleIntegration: Bottle not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.falcon.FalconIntegration: Falcon not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.sanic.SanicIntegration: Sanic not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.celery.CeleryIntegration: Celery not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.rq.RqIntegration: RQ not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.aiohttp.AioHttpIntegration: AIOHTTP not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.tornado.TornadoIntegration: Tornado not installed
 [sentry] DEBUG: Did not import default integration sentry_sdk.integrations.sqlalchemy.SqlalchemyIntegration: SQLAlchemy not installed.
 [sentry] DEBUG: Setting up previously not enabled integration logging
 [sentry] DEBUG: Setting up previously not enabled integration stdlib
 [sentry] DEBUG: Setting up previously not enabled integration excepthook
 [sentry] DEBUG: Setting up previously not enabled integration dedupe
 [sentry] DEBUG: Setting up previously not enabled integration atexit
 [sentry] DEBUG: Setting up previously not enabled integration modules
 [sentry] DEBUG: Setting up previously not enabled integration argv
 [sentry] DEBUG: Setting up previously not enabled integration threading
 [sentry] DEBUG: Enabling integration logging
 [sentry] DEBUG: Enabling integration stdlib
 [sentry] DEBUG: Enabling integration excepthook
 [sentry] DEBUG: Enabling integration dedupe
 [sentry] DEBUG: Enabling integration atexit
 [sentry] DEBUG: Enabling integration modules
 [sentry] DEBUG: Enabling integration argv
 [sentry] DEBUG: Enabling integration threading
 [sentry] DEBUG: Sending envelope [envelope with 1 items (default)] project:1860700 host:o333597.ingest.sentry.io
 [sentry] DEBUG: atexit: got shutdown signal
 [sentry] DEBUG: atexit: shutting down client
 [sentry] DEBUG: Flushing HTTP transport
 [sentry] DEBUG: background worker got flush request
 [sentry] DEBUG: 1 event(s) pending on flush
Sentry is attempting to send 1 pending error messages
Waiting up to 2 seconds
Press Ctrl-C to quit
 [sentry] DEBUG: background worker flushed
 [sentry] DEBUG: Killing HTTP transport
 [sentry] DEBUG: background worker got kill request

sentry_perf.py

#!/usr/bin/env python3
import sentry_sdk
import time

sentry_sdk.init(
    "https://[email protected]/1860700",
    _experiments={"auto_enabling_integrations": True},
     traces_sample_rate = 1.0,
     debug=True,
)

from sentry_sdk import start_transaction

from dataclasses import dataclass

@dataclass
class Item:
    transaction_name: str
    def get_transaction_name(self):
        return self.transaction_name

def process_item(item: Item):
    time.sleep(0.1)

for item in [Item("hello"), Item("bar")]:
  with start_transaction(op="task", name=item.get_transaction_name()):
      # process_item may create more spans internally (see next examples)
      process_item(item)

Hey Christoph, maintainer of the python sdk here. Could you try putting time.sleep(10) at the end of your program. The SDK, according to its logs, is clearly successful in capturing data and attempting to send it out, but then times out on shutdown. I wonder if the latency to our servers is prohibitively large.

Hi Markus,

thanks for the suggestion!

So, I added capture_message to (1) make sure my connection works (it didn't due to proxy), and (2) to force a flush to Sentry.

Here is a list of changes, which each work independently. I.e. making any one of these changes makes performance info show up on Sentry-Web.

sentry_sdk.init(
     ...
     shutdown_timeout=10,
)

This at end of file:

# sentry_sdk.capture_message(f"Test. Flush some messages..")
# As suggested by @untitaker
# time.sleep(10)
sentry_sdk.flush(timeout=30)