RE: Handling 100.000 packets/sec or more

From: Sten Daniel Sørsdal (sten.daniel.sorsdal_at_wan.no)
Date: 01/14/04

  • Next message: Richard Wendland: "Re: Handling 100.000 packets/sec or more" 
    Date: Wed, 14 Jan 2004 13:22:25 +0100
To: "Adrian Penisoara" <ady@freebsd.ady.ro>, <freebsd-isp@freebsd.org>

    >
    > What can I do to make the system better handle this kind of
    > traffic ?
    > Could device polling(8) or just increasing the kernel
    > frequency clock to 1000Hz or more improve the situation ?
    > What kind of network cards could face a lot better this
    > burden ? Are there any other solutions ?
    >

    device polling(8) really does help _alot_ for packet floods/storms.
    for device polling to work properly (imho) you would need to set HZ to 1000.
    I dont recommend any higher HZ on a PIII.
    I recommend Intel cards (fxp or em) because they chew through packets at
    the highest rate (in our tests) given good supporting hardware and tuned software.
    Both support device polling.

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  • Next message: Richard Wendland: "Re: Handling 100.000 packets/sec or more"