Monitor network performance

Oct 13, 2025 by talynt.org 98 views

Issue I am Facing

As a developer, I've encountered a frustrating issue with my Ubuntu 24.10 system. After migrating from Windows, I started experiencing timeout errors with the python-telegram-bot library. The issue is not with the library itself, but rather with the performance of Telegram's API on Ubuntu. In this article, we'll delve into the possible causes of this slowdown and explore potential solutions.

Symptoms

The symptoms of this issue are:

The python-telegram-bot library takes an unusually long time to respond, sometimes up to 15 seconds.
The machine is connected to a 10G network, ruling out internet connectivity issues.
Other websites respond quickly, indicating that the issue is specific to Telegram's API.

Debug Logs

To better understand the issue, I've included the debug logs from the python-telegram-bot library. The logs reveal that the time is mostly spent waiting to receive response headers.

DEBUG:httpcore.connection:connect_tcp.started host='api.telegram.org' port=443 local_address=None timeout=100 socket_options=None
DEBUG:httpcore.connection:connect_tcp.complete return_value=<httpcore._backends.sync.SyncStream object at 0x755dd20e83b0>
DEBUG:httpcore.connection:start_tls.started ssl_context=<ssl.SSLContext object at 0x755dd215e750> server_hostname='api.telegram.org' timeout=100
=> takes about 2 secs here.

DEBUG:httpcore.connection:start_tls.complete return_value=<httpcore._backends.sync.SyncStream object at 0x755dd210ed80>
DEBUG:httpcore.http11:send_request_headers.started request=<Request [b'POST']>
DEBUG:httpcore.http11:send_request_headers.complete
DEBUG:httpcore.http11:send_request_body.started request=<Request [b'POST']>
DEBUG:httpcore.http11:send_request_body.complete
DEBUG:httpcore.http11:receive_response_headers.started request=<Request [b'POST']>
=> takes as long as 10+ secs here.

DEBUG:httpcore.http11:receive_response_headers.complete return_value=(b'HTTP/1.1', 200, b'OK', [(b'Server', b'nginx/1.18.0'), (b'Date', b'Tue, 11 Mar 2025 04:28:52 GMT'), (b'Content-Type', b'application/json'), (b'Content-Length', b'259'), (b'Connection', b'keep-alive'), (b'Strict-Transport-Security', b'max-age=31536000; includeSubDomains; preload'), (b'Access-Control-Allow-Origin', b'*'), (b'Access-Control-Allow-Methods', b'GET, POST, OPTIONS'), (b'Access-Control-Expose-Headers', b'Content-Length,Content-Type,Date,Server,Connection')])
INFO:httpx:HTTP Request: POST https://api.telegram.org/<token>/getMe "HTTP/1.1 200 OK"
DEBUG:httpcore.http11:receive_response_body.started request=<Request [b'POST']>
DEBUG:httpcore.http11:receive_response_body.complete
DEBUG:httpcore.http11:response_closed.started
DEBUG:httpcore.http11:response_closed.complete

Traceback to the Issue

# No traceback provided

Related Part of Your Code

# No related code provided

Operating System

Ubuntu 24.10

Version of Python, python-telegram-bot & Dependencies

Windows

Python: 3.10
python-telegram-bot: 20.6
httpx: 0.25.0

Ubuntu

Python: 3.12
python-telegram-bot: 21.9
httpx: 0.28.1

Possible Causes

Based on the debug logs, the possible causes of this slowdown are:

Network issues: Although the machine is connected to a 10G network, there might be underlying network issues that are causing the slowdown.
Server-side issues: The issue might be on the server-side, specifically with Telegram's API.
Library issues: The issue might be with the python-telegram-bot library or the httpx library.

Potential Solutions

To resolve this issue, you can try the following potential solutions:

Upgrade to the latest version of python-telegram-bot: Make sure you're using the latest version of the library.
Use a different library: Consider using a different library, such as requests, to make API calls.
Implement retries: Implement retries in your code to handle temporary network issues.
Monitor network performance: Monitor your network performance to identify any underlying issues.
Contact Telegram support: Reach out to Telegram support to report the issue and see if they can provide any assistance.

Conclusion

Q: What are the possible causes of Telegram occasionally getting very slow on Ubuntu?

A: The possible causes of this issue are:

Network issues: Although the machine is connected to a 10G network, there might be underlying network issues that are causing the slowdown.
Server-side issues: The issue might be on the server-side, specifically with Telegram's API.
Library issues: The issue might be with the python-telegram-bot library or the httpx library.

Q: How can I troubleshoot the issue?

A: To troubleshoot the issue, you can try the following steps:

Check the debug logs: Analyze the debug logs to identify the source of the issue.
Monitor network performance: Monitor your network performance to identify any underlying issues.
Contact Telegram support: Reach out to Telegram support to report the issue and see if they can provide any assistance.

Q: What are some potential solutions to resolve the issue?

A: Some potential solutions to resolve the issue are:

Upgrade to the latest version of python-telegram-bot: Make sure you're using the latest version of the library.
Use a different library: Consider using a different library, such as requests, to make API calls.
Implement retries: Implement retries in your code to handle temporary network issues.
Monitor network performance: Monitor your network performance to identify any underlying issues.
Contact Telegram support: Reach out to Telegram support to report the issue and see if they can provide any assistance.

Q: How can I implement retries in my code?

A: To implement retries in your code, you can use a library such as tenacity or retrying. Here's an example of how you can use tenacity to implement retries:

import tenacity

@tenacity.retry(wait=tenacity.wait_exponential(multiplier=1, min=4, max=10))
def make_api_call():
    # Make API call
    pass

Q: How can I monitor network performance?

A: To monitor network performance, you can use tools such as tcpdump or iftop. Here's an example of how you can use tcpdump to monitor network performance:

tcpdump -i any -n -s 0 -c 100 -W 100 -G 1 -y tcp port 443

Q: What are some best practices for troubleshooting network issues?

A: Some best practices for troubleshooting network issues are:

Use a network sniffer: Use a network sniffer such as tcpdump to capture network traffic.
Monitor network performance: Monitor your network performance to identify any underlying issues.
Check network configuration: Check your network configuration to ensure that it is correct.
Contact network support: Reach out to your network support team to report the issue and see if they can provide any assistance.

Q: How can I contact Telegram support?

A: To contact Telegram support, you can:

Visit the Telegram support website: Visit the Telegram support website to submit a ticket.
Email Telegram support: Email Telegram support at support@telegram.org.
Contact Telegram support on social media: Contact Telegram support on social media platforms such as Twitter or Facebook.

Conclusion

In conclusion, the issue of Telegram occasionally getting very slow on Ubuntu is a complex problem that requires a thorough investigation. By analyzing the debug logs and considering potential causes, we can identify possible solutions to resolve this issue. Remember to upgrade to the latest version of python-telegram-bot, use a different library, implement retries, monitor network performance, and contact Telegram support to resolve this issue.