tests/test_cq: Prevent CQ overflows by introducing a delay before resize #1690
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In the RXE driver environment, intermittent test failures occur due to the resize_cq() operation succeeding before the completion of the posting WQE. As a result, when WQE completion happens, the CQ can become full, and some CQEs may be discarded by the kernel, causing poll_cq() to fail. The failure is evidenced by the following error message: > rxe_enp2s0: cq#342 rxe_cq_post: queue full To address this issue simply, introduce a short sleep after post_cq() to ensure at least one WQE completes before performing the resize_cq() operation. This mitigates the race condition that leads to CQ overflow. Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
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In the RXE driver environment, intermittent test failures occur due to the
resize_cq() operation succeeding before the completion of the posting WQE.
As a result, when WQE completion happens, the CQ can become full, and some
CQEs may be discarded by the kernel, causing poll_cq() to fail.
The failure is evidenced by the following error message:
To address this issue simply, introduce a short sleep after post_cq() to
ensure at least one WQE completes before performing the resize_cq()
operation. This mitigates the race condition that leads to CQ overflow.