DEVICE_POLLING in 5.3

[Yaraghchi, Stephan]

Hi fellows,

I'm trying to tune network performance of a 5.3-BETA5 box
by compiling the DEVICE_POLLING and HZ=1000 options into
the kernel. Compilation went fine.
I found the usual warning in /usr/src/sys/kern/kern_poll.c
concerning device polling in SMP kernels and removed it.

To finally enable the feature one have to set the sysctl
kern.polling.enable to value '1'.

The only problem is that 5.3-BETA5 doesn't know about it:

sysctl: unknown oid 'kern.polling.enable'

Any advice is highly appreciated.

Regards,

Stephan.