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These arise from a select which times out if no buffer is available. (Code is available here - as of 2024/04/0123: https://github.com/slaclab/rogue/blob/de67a57927285d6df9f1a688a8187800ea80fcd8/src/rogue/hardware/axi/AxiStreamDma.cpp#L296C4-L297C4). There are (at least) a couple of scenarios where this may occur.

Code Block
sudo rmmod /usr/local/sbin/datadev.ko sudo insmod /usr/local/sbin/datadev.ko <Parameters...>

Potential (Less Disruptive) Solution from Larry Ruckman: Sent via Slack (2024/04/22 17:32:22_

Can you increase increasing the write buffer count? I don’t think I have ever tested with anything less than 16

cpo will try increasing buffer count to see if this minimizes recurrences of the problem.

HSD

Location in Chassis and Repair Instructions

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