Re: [PATCH net-next v1 2/2] net/smc: reduce TX slot contention with exclusive wait

On 06/08/26 12:12 pm, D. Wythe wrote:
> smc_wr_tx_get_free_slot() waits for a free TX slot with
> wait_event_interruptible_timeout(). Since the wait_event family
> enqueues waiters as non-exclusive, wake_up() may wake multiple
> waiters even though only one can use the slot, causing
> thundering-herd contention when slots are scarce.

Have you run any performance benchmarks (e.g. redis-benchmark or uperf)
to quantify the benefit of this change?

Since the motivation is to reduce contention caused by multiple waiters
being awakened for a single available TX slot, it would be helpful to
see measurable results. Please share the baseline and patched throughput
figures, and any observed throughput differences.