Tuning routing table size in FreeBSD 8.0 and 7.2

[nikitha]

Thank you all, for your timely reply..
To answer Niko's question: Just i'm doing some performance/stress testing of
a freebsd router.. :-)

-Sumi

On Thu, Feb 24, 2011 at 10:11 PM, Nikos Vassiliadis <nvass at gmx.com> wrote:

> On 2/24/2011 4:51 PM, Damien Fleuriot wrote:
>
>> On 2/24/11 3:00 PM, nikitha wrote:
>>
>>> Hi,
>>> Could you plz share the information on the maximum number of routes that
>>> can
>>> be added (by default) in FREEBSD 8.0/7.2 kernel?
>>> In Linux the sysctl rt_max_size is used. Is there a similar tunable
>>> parameter in freeBSD?
>>>
>> [snip]
>
>
>> I could not find a sysctl that matched what you're looking for.
>>
>> AFAIK, the routing table is limited only by the amount of RAM you can
>> allocate to it.
>>
>
> Yes. You can use "vmstat -z | grep rtentry" to examine it.
> It seems trivial to add a limit there(without having thought of
> multiple routing tables and vnet).
>
> Out of curiosity, why would you want such a limit?
>
>