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[Misc] add logging level env var #5045

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May 25, 2024
Merged

[Misc] add logging level env var #5045

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2 changes: 2 additions & 0 deletions .github/ISSUE_TEMPLATE/400-bug report.yml
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Expand Up @@ -59,6 +59,8 @@ body:

Please also paste or describe the results you observe instead of the expected results. If you observe an error, please paste the error message including the **full** traceback of the exception. It may be relevant to wrap error messages in ```` ```triple quotes blocks``` ````.

Please set the environment variable `export VLLM_LOGGING_LEVEL=DEBUG` to turn on more logging to help debugging potential issues.

If you experienced crashes or hangs, it would be helpful to run vllm with `export VLLM_TRACE_FUNCTION=1` . All the function calls in vllm will be recorded. Inspect these log files, and tell which function crashes or hangs.
placeholder: |
A clear and concise description of what the bug is.
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5 changes: 5 additions & 0 deletions vllm/envs.py
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Expand Up @@ -22,6 +22,7 @@
VLLM_DO_NOT_TRACK: bool = False
VLLM_USAGE_SOURCE: str = ""
VLLM_CONFIGURE_LOGGING: int = 1
VLLM_LOGGING_LEVEL: str = "INFO"
VLLM_LOGGING_CONFIG_PATH: Optional[str] = None
VLLM_TRACE_FUNCTION: int = 0
VLLM_ATTENTION_BACKEND: Optional[str] = None
Expand Down Expand Up @@ -178,6 +179,10 @@
"VLLM_LOGGING_CONFIG_PATH":
lambda: os.getenv("VLLM_LOGGING_CONFIG_PATH"),

# this is used for configuring the default logging level
"VLLM_LOGGING_LEVEL":
lambda: os.getenv("VLLM_LOGGING_LEVEL", "INFO"),

# Trace function calls
# If set to 1, vllm will trace function calls
# Useful for debugging
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3 changes: 2 additions & 1 deletion vllm/logger.py
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Expand Up @@ -14,6 +14,7 @@

VLLM_CONFIGURE_LOGGING = envs.VLLM_CONFIGURE_LOGGING
VLLM_LOGGING_CONFIG_PATH = envs.VLLM_LOGGING_CONFIG_PATH
VLLM_LOGGING_LEVEL = envs.VLLM_LOGGING_LEVEL

_FORMAT = "%(levelname)s %(asctime)s %(filename)s:%(lineno)d] %(message)s"
_DATE_FORMAT = "%m-%d %H:%M:%S"
Expand All @@ -30,7 +31,7 @@
"vllm": {
"class": "logging.StreamHandler",
"formatter": "vllm",
"level": "INFO",
"level": VLLM_LOGGING_LEVEL,
"stream": "ext://sys.stdout",
},
},
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