bird under heavy cpu load

[Ondrej Zajicek]

On Mon, Mar 26, 2012 at 06:02:17PM +0400, Oleg wrote:
> On Mon, Mar 26, 2012 at 01:25:32AM +0200, Ondrej Zajicek wrote:
> > Hello
> > 
> > Answering collectively for the whole thread:
> > 
> > I did some preliminary testing and it on my test machine exporting full
> > BGP feed (cca 400k routes) to a kernel table took 1-2 sec on Linux and
> > 5-6 sec on BSD. Similar time for flushing the kernel table. Therefore,
> > if we devote a half CPU for kernel sync, we have about 200 kr/s (kiloroutes
> > per second) for Linux and 40 kr/s for BSD, this still seems more than
> > enough for an edge router. Are there any estimates (using protocol statistics)
> > for number of updates to kernel proto in this case? How many protocols,
> > tables and ppie do you have in your case?
> 
>   I think, i don't understand correctly about estimates. From each of our upstreams
> we get full view(~400k routes). And if one upstream session is up/down, i think,
> kernel receive ~400k updates.
>   I have totaly 5 tables, 5 kernel protocols, 8 bgp protocols, 2 pipes.

BTW, you could try the current code from GIT, it should fix the problem
of blocking BIRD for too long when protocol goes down.
(commit fb829de69052755a31d76d73e17525d050e5ff4d)

-- 
Elen sila lumenn' omentielvo

Ondrej 'SanTiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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