add decode round robin policy#15164
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iforgetmyname merged 3 commits intosgl-project:mainfrom Dec 22, 2025
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merrymercy
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…n_eagle3_dp * 'main' of https://github.com/sgl-project/sglang: (208 commits) MoE: Skip SiLU/GELU activation for masked experts (sgl-project#15539) [GLM-ASR] GLM-ASR Support (sgl-project#15570) Improve engine customization interface (sgl-project#15635) chore: bump sgl-kernel version to 0.3.20 (sgl-project#15590) bugfix[schedule]: Refactor sort method and add related UT (sgl-project#13576) Adjust wrong `mtp` meaning introduce by mimo (sgl-project#15632) Tiny add back missing router per attempt response metric (sgl-project#15621) Fix router gRPC mode launch error caused by async loading (sgl-project#15368) [model-gateway] return 503 when all workers are circuit-broken (sgl-project#15611) [Diffusion] Support peak memory record in offline generate and serving (sgl-project#15610) [VLM] Tiny: Unify VLM environment variables (sgl-project#15572) [diffusion] chore: remove default post-denoising dit offload in local mode (sgl-project#15573) Tiny enable soft watchdog in CI for stuck without logs (sgl-project#15616) Tiny add stuck simulation (sgl-project#15613) Support soft watchdog for tokenizer/detokenizer/dp-controller processes (sgl-project#15607) Tiny avoid EnvField misuse (sgl-project#15612) add decode round robin policy (sgl-project#15164) Add glm-4.6-fp8 with/without mtp in nightly ci (sgl-project#15566) Adapt fixture-kit to gsm8k mixin (sgl-project#15599) [model-gateway] add retry support to OpenAI router chat endpoint (sgl-project#15589) ...
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Motivation
In the PD separation scenario, based on the DeepSeek-R1 model, we find that the load requests of each DP channel of the Decode instance are unbalanced during the pressure test. (The following figure shows the pressure test process.)
To solve this problem, the roundrobin scheduling policy is added for the Decode instance in the PD separation scenario. The test result is as follows:
Modifications
Add the decode_round_robin policy to enable the roundrobin policy of the decode instance.
Accuracy Tests
NA
Benchmarking and Profiling
Checklist