wehub-resource-sync
106 lines
2.8 KiB
Python
106 lines
2.8 KiB
Python
from locust.env import Environment
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from locust.stats import stats_printer, stats_history, print_stats
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import gevent
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from typing import Dict, Any
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import logging
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from locust.log import setup_logging
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from .load_test import LLMUser, events, collect_metrics
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from .configs import LoadTestConfig
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class LLMLoadTester:
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"""
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Usage Example:
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```python
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config = LoadTestConfig(
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host="http://localhost:8000",
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provider="vllm",
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model="meta-llama/Meta-Llama-3.1-8B-Instruct",
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api_key="NONE",
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prompt_tokens=550,
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max_tokens=150,
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users=128,
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run_time="1m",
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summary_file="./vllm.csv"
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)
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tester = LLMLoadTester(config)
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results = tester.run()
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```
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"""
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def __init__(self, config: LoadTestConfig):
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self.config = config
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def _setup_environment(self) -> Environment:
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setup_logging("INFO", None)
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# Setup Environment and Runner
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env = Environment(
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user_classes=[LLMUser],
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host=self.config.host,
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reset_stats=self.config.reset_stats,
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events=events,
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)
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env.parsed_options = self.config.to_namespace()
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return env
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def run(self) -> Dict[str, Any]:
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try:
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# Setup environment
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env = self._setup_environment()
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env.create_local_runner()
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# Log test start
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logging.info(f"Starting test with {self.config.users} users")
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# Create greenlets for stats
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stats_printer_greenlet = gevent.spawn(stats_printer(env.stats))
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stats_history_greenlet = gevent.spawn(stats_history, env.runner)
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# Start the test
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env.runner.start(
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user_count=self.config.users,
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spawn_rate=self.config.users,
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)
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# Run for specified duration
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gevent.sleep(self._parse_time(self.config.run_time))
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# Stop the test
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env.runner.quit()
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entries = collect_metrics(env)
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# Wait for greenlets
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env.runner.greenlet.join()
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stats_printer_greenlet.kill()
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stats_history_greenlet.kill()
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# Print final stats
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print_stats(env.stats)
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return entries
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except Exception as e:
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logging.error(f"Test failed: {str(e)}")
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raise
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@staticmethod
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def _parse_time(time_str: str) -> int:
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"""Convert time string (e.g., '30s', '1m', '1h') to seconds"""
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unit = time_str[-1]
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value = int(time_str[:-1])
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if unit == "s":
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return value
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elif unit == "m":
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return value * 60
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elif unit == "h":
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return value * 3600
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else:
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raise ValueError(f"Invalid time unit: {unit}")
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