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{ | ||
// Use IntelliSense to learn about possible attributes. | ||
// Hover to view descriptions of existing attributes. | ||
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 | ||
"version": "0.2.0", | ||
"configurations": [ | ||
{ | ||
"name": "Python Debugger: Current File", | ||
"type": "debugpy", | ||
"request": "launch", | ||
"program": "${file}", | ||
"console": "integratedTerminal", | ||
"justMyCode": false | ||
} | ||
] | ||
} |
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.. include:: /includes/_links.rst | ||
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Performance Tuning | ||
================== | ||
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PySNMP is a highly optimized software. However, there are some knobs you | ||
can turn to make it work even faster. Here are some tips: | ||
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Disabling MIB Support | ||
--------------------- | ||
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Loading MIB metadata into memory is a costly operation. If you are not | ||
using MIBs in your application, you can disable MIB support by | ||
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TODO: Add a code snippet here. | ||
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Run Python Release Mode | ||
----------------------- | ||
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Python interpreter can run in debug and release modes. Running in release | ||
mode can make your Python code run faster. To run Python in release mode, | ||
you can use the following command: | ||
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.. code-block:: bash | ||
$ python -O myscript.py | ||
Choosing the Right High-Level API | ||
--------------------------------- | ||
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PySNMP comes with two high-level APIs: v1 and v3. | ||
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If you are using SNMPv1 and SNMPv2c, and you are not using any security | ||
features in your application, you should use the v1 API. The | ||
``SnmpDispatcher`` based API is the fastest API in PySNMP, as it simply | ||
sends SNMP packets and does not do any heavy processing on the packets. | ||
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If you are using SNMPv3, you have to use the v3 API with USM and VACM to | ||
handle security and access control. The v3 API is significantly slower than | ||
the v1 API because it builds up a local secure engine and has to do more | ||
processing on the packets in order to be compliant with SNMPv3 standards. | ||
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Using the right API, and using the right features in the API can make your | ||
application run reasonably fast. | ||
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Don't trust blindly other Python SNMP libraries claiming to be faster. They | ||
either lack of essential features that make the comparison pointless or | ||
they bind to native libraries that become your nightmare to maintain and | ||
deploy. In the end the performance is limited by the Python interpreter and | ||
the SNMP protocol itself. |
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