Re: [PATCH 1/3] nvme-tcp: rate limit error message in send path

Daniel Wagner
2025-01-30T15:25:45Z

On Wed, Jan 29, 2025 at 07:05:34AM +0100, Christoph Hellwig wrote:
> On Tue, Jan 28, 2025 at 05:34:46PM +0100, Daniel Wagner wrote:
> > If a lot of request are in the queue, this message is spamming the logs,
> > thus rate limit it.
>
> Are in the queue when what happens? Not that I'm against this,
> but if we have a known condition where this error is printed a lot
> we should probably skip it entirely for that?

The condition is that all the elements in the queue->send_list could fail as a
batch. I had a bug in my patches which re-queued all the failed command
immediately and semd them out again, thus spamming the log.

This behavior doesn't exist in upstream. I just thought it might make
sense to rate limit as precaution. I don't know if it is worth the code
churn.