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[HiCache] Count hit allocations and in-flight backups in the buffer pipeline idle check #37883

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Merged
xiezhq-hermann merged 1 commit into from
Sep 3, 2026
Merged

[HiCache] Count hit allocations and in-flight backups in the buffer pipeline idle check #37883

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8 changes: 5 additions & 3 deletions python/sglang/srt/mem_cache/buffer_mode/pipeline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -275,13 +275,15 @@ def reset(self) -> None:
self._anchor_lock_cap_skips = 0

def is_idle(self) -> bool:
"""No queued or in-flight operation holds host staging or can restart I/O."""
"""No pending or in-flight buffer-mode transfer work."""
return not (
self.pending_write_queue
self.pending_hit_allocs
or self.staged_prefetches
or self.ongoing_buffer_load_back
or self.pending_write_queue
or self.inflight_backup_node_ids
or self.ongoing_write_through
or self.ongoing_backup
or self.ongoing_buffer_load_back
)

# ---- backup pipeline (device -> staging -> storage) ----
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