Dear all,

I am doing some latency benchmarks with irqbench/irqloop.
Everything works fine with irqloop in testmode (1=user, 2=kernel and
3=irq handler) But when trying to start with testmode 4=hard IRQ
handler, I get the following message:

---snip---
irqloop: error starting test: Resource temporarily unavailable
---snap---

This occurs somewhere when calling:

	ioctl(benchdev, RTTST_RTIOC_IRQBENCH_START, &config)

Any quick suggestions how to solve this problem?
By the way: I read already the provided document in "txt" folder.


Thanks in advance,

Markus Franke