credit-starvation · unknown · also BB-credit starvation, Transmit-credit stall

Credit starvation

Credit starvation is a transmission stall in which a Fibre Channel sender has a frame ready but no available buffer-to-buffer credit.

Related Observatory article: Credit starvation on hesela.com

An idle zero-credit snapshot does not establish a stall. Keep event counts separate from time spent waiting and inspect both link directions. [1]

Starvation describes an observation, not its cause; it does not establish cyclic buffer deadlock. See the worked credit-window examples on the companion technology card. [2]

Relations

related
Buffer-to-buffer credit, Buffer-cycle deadlock, Fibre Channel, Fibre Channel frame

Citations

  1. Cisco MDS 9000 Interfaces Configuration Guide, Release 9.x: Configuring Interface Buffers (accessed 2026-10-19)
  2. Hesela: Fibre Channel, sizing the credit window (accessed 2026-10-19)
Sources & caveats
  • Source review and operational definition. This is a condition, not a technology lifecycle classification or field-incidence estimate.

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Published by Hesela team · Updated

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Hesela team. Credit starvation. Hesela. 2026-10-19. https://hesela.dev/terms/credit-starvation/