Add metrics for having prefill and decode in different ranks (#15752)

python/sglang/srt/managers/scheduler_output_processor_mixin.py

@@ -445,6 +445,10 @@ class SchedulerOutputProcessorMixin:
             and self.forward_ct_decode % self.server_args.decode_log_interval == 0
         ):
             self.log_decode_stats(can_run_cuda_graph, running_batch=batch)
+        if self.enable_metrics:
+            self.log_decode_stats_every_iteration(
+                batch, num_accepted_tokens=result.num_accepted_tokens
+            )
 
     def _mamba_prefix_cache_update(
         self, req: Req, batch: ScheduleBatch, result: GenerationBatchResult, i: int