Flowtable stats
Adrian Chadd
adrian at freebsd.org
Sun Jun 8 21:07:00 UTC 2014
Hi,
It's in netstat now. Try netstat -rs
-a
On 8 June 2014 07:46, Dewayne Geraghty
<dewayne.geraghty at heuristicsystems.com.au> wrote:
> While preparing to transition from 9.2Stable to 10.0Stable, I noticed
> that there is no ability to examine the status of the flowtable. The
> sysctl net.inet.flowtable.stats was useful to ascertain if the
> net.flowtable.maxflows (or previously net.inet.flowtable.nmbflows on 9.*
> and 8.*) is sufficient or excessive. For boundary devices with 1G (or
> less), it is helpful to tune.
>
> Is there another sysctl that I need to tweak to see this, or a
> supporting program?
>
> It would be useful to see Hits/Lookups, while misses might be useful if
> expiry were tuneable.
>
> Refer to single CPU boundary device FreeBSD9.2:
> net.inet.flowtable.stats=
> table name: ipv4
> collisions: 12
> allocated: 0
> misses: 225821
> max_depth: 1
> free_checks: 1502021
> frees: 225785
> hits: 220339242
> lookups: 220565063
>
> net.inet.flowtable.nmbflows=25600 looks about right, while the FreeBSD10
> (server) that I'm using has autoset net.flowtable.maxflows=427552
>
> There was no mention in UPDATING or the 10.0R Release Notes.
> Regards, Dewayne.
>
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