Re: Performance of FreeBSD kernelmode PPPoE

The paper is interesting, may I suggest you try DEVICE_POLLING on FreeBSD 4.7. You will notice an impressive reduction for CPU usage and interrupts. Here is a quick summary for enabling polling:

recompile kernel with:

OPTIONS        DEVICE_POLLING
OPTIONS        HZ=1000

reboot and activate with
# sysctl kern.polling.enable=1

Remember however that POLLING code is not [yet] available for 3com905 (xl) cards. You will need to make the test with fxp,rl,de or sis NICs

More info on device polling is here http://info.iet.unipi.it/~luigi/polling/

Talist

Quoting Juuso Raitala <cheesus@ksilta.edu.ouka.fi>:

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> Hello,
>
> I updated the paper 'PPPoE performance under Linux and BSDs' [1] again,
> this time adding benchmark results for FreeBSD 4.7 using in-kernel PPPoE
Received on Sat Dec 7 15:54:41 2002