Freeradius performance settings or bug?

[Phil Mayers]

Jeremiah Millay wrote:
> Hi,
> I'm seeing some odd behavior running freeradius-1.1.7 in a freebsd 6.3 
> environment. I see a lot of these in the radius log:
> 
> Tue Apr 22 09:27:44 2008 : Error: Discarding duplicate request from 
> client arc3.wnskvtao.sover.net:1645 - ID: 208 due to unfinished request 
> 1267
> Tue Apr 22 09:27:44 2008 : Error: Discarding duplicate request from 
> client arc3.wnskvtao.sover.net:1645 - ID: 209 due to unfinished request 
> 1268
> 
> as well as the cputime constantly increasing the longer I leave radiusd 
> running:

Well yes; the process runs, and accumulates CPU time.

What OS is this?

> Looking at older messages posted to the list, I see Alan suggests that 
> the duplicate requests are related to radiusd not replying quickly 
> enough due to either having hostname lookups enabled or due to sql 
> backend slowness. I'm not using sql in my configuration and do not have 
> hostname lookups enabled.

Are you using "wtmp" i.e. "radlast". Don't. It's slow.

> Here are some configuration snippets that may be relevant:
> 
> cleanup_delay = 2
> max_requests = 10240
> hostname_lookups = no
> thread pool {
>    start_servers = 20
>    max_servers = 32
>    min_spare_servers = 3
>    max_spare_servers = 10
>    max_requests_per_server = 0
> }

That looks OK as a first cut. What's the full config?