113 lines
3.5 KiB
Python
113 lines
3.5 KiB
Python
import os
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import unittest
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from sglang.bench_serving import run_benchmark
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from sglang.srt.environ import envs
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from sglang.srt.utils import kill_process_tree
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from sglang.test.test_utils import (
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DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
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DEFAULT_URL_FOR_TEST,
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CustomTestCase,
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get_benchmark_args,
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popen_launch_server,
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)
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class TestPrefillDelayerThroughput(CustomTestCase):
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def test_1_online_serving_has_prefill_delayer(self):
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self._run_throughput_test_online_serving(prefill_delayer=True)
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def test_2_online_serving_no_prefill_delayer(self):
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self._run_throughput_test_online_serving(prefill_delayer=False)
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def test_3_offline_gen_has_prefill_delayer(self):
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self._run_throughput_test_offline_gen(prefill_delayer=True)
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def test_4_offline_gen_no_prefill_delayer(self):
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self._run_throughput_test_offline_gen(prefill_delayer=False)
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def _run_throughput_test_online_serving(self, prefill_delayer: bool):
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self._run_throughput_test(
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debug_name=f"online_serving ({prefill_delayer=})",
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prefill_delayer=prefill_delayer,
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other_launch_args=[
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"--mem-fraction-static",
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"0.6",
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],
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other_benchmark_args=dict(
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num_prompts=500,
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# trigger chunked prefill
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random_input_len=30000,
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random_output_len=256,
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request_rate=32,
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),
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)
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def _run_throughput_test_offline_gen(self, prefill_delayer: bool):
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self._run_throughput_test(
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debug_name=f"offline_gen ({prefill_delayer=})",
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prefill_delayer=prefill_delayer,
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other_benchmark_args=dict(
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num_prompts=800,
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random_input_len=30000,
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random_output_len=500,
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),
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other_launch_args=[
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"--max-total-tokens",
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"200000",
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"--mem-fraction-static",
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"0.6",
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],
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)
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def _run_throughput_test(
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self,
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debug_name: str,
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prefill_delayer: bool,
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other_launch_args,
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other_benchmark_args,
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):
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os.environ["SGLANG_PREFILL_DELAYER_DEBUG_LOG"] = "1"
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model = "Qwen/Qwen3-0.6B"
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base_url = DEFAULT_URL_FOR_TEST
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with envs.SGLANG_SCHEDULER_DECREASE_PREFILL_IDLE.override(
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prefill_delayer
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), envs.SGLANG_PREFILL_DELAYER_MAX_DELAY_PASSES.override(100):
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process = popen_launch_server(
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model,
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base_url,
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timeout=DEFAULT_TIMEOUT_FOR_SERVER_LAUNCH,
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other_args=[
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"--trust-remote-code",
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"--tp",
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"8",
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"--enable-dp-attention",
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"--dp",
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"8",
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"--chunked-prefill-size",
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"131072",
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*other_launch_args,
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],
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)
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try:
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args = get_benchmark_args(
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base_url=base_url,
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dataset_name="random",
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tokenizer=model,
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**other_benchmark_args,
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)
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res = run_benchmark(args)
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finally:
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kill_process_tree(process.pid)
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print(f"=== {debug_name} ===")
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print(f"Input throughput: {res['input_throughput']:.2f} token/s")
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print(f"Output throughput: {res['output_throughput']:.2f} token/s")
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if __name__ == "__main__":
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unittest.main()
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