[c-nsp] BGP confusion in 12.2(18)SXE2

[Hank Nussbacher]

At 08:54 AM 14-09-05 +0200, Gert Doering wrote:

On 12.2(18)SXE3 I get:
171033 network entries using 19326729 bytes of memory
with 1 full feed.

-Hank


>Indeed:
>
>191463 network entries using 21635319 bytes of memory
>
>on 12.2(18)SXE2, vs.
>
>167380 network entries using 16905380 bytes of memory
>
>on 12.2(18)S9.
>
> > Rodney suspects CSCeh16989 which has a fix in 12.2(30)S (no 6500 or 7200
> > image on that release), but I don't see a fix yet for 12.2SX.
>
>Hmmm.  I do have a TAC case open on this, will throw the bug ID at
>them, and see what will happen :-) - on a router with lots of exchange
>point peers and a full table eBGP session, chances for "multiple minutes
>without a single update" are very small indeed, so it might fit.
>
>
> > That bug seems to have been introduced by a fix that would have been
> > integrated into 12.2(18)SXE and hence you would not have seen it in
> > 12.2(18)SXD, SXB, etc.
>
>This fits to what Jon Lewis has been reporting - "no problems in SXD".
>
> > The bug also claims to continually increase memory consumption, so you may
> > want to watch that for both 1) signs that this is the problem you are
> > encountering; 2) operationally impacting memory exhaustion.
>
>The memory consumption was the reason why I initially opened the TAC
>case - the BGP process is up to over 212 Mbyte of RAM:
>
>  PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process
>    3   0 1191220080  194052656  212285264      54516          0 BGP 
> Router
>
>... while the 12.2(18)S9 boxes do roughly the same stuff in 130 Mb.
>
> > If you don't need what's in that version, you may want to consider going
> > back to your previous image until this issue is resolved.
>
>Do you think SXF would be a good idea?  Any chance of seeing this bug
>fixed in SXE"3" or SFX"2" any time soon?
>
>We're on SXE2 because we want to use BFD - which we're not actually
>doing yet, but certainly want to enable "real soon".
>
>thanks a lot for your help,
>
>gert
>
>--
>USENET is *not* the non-clickable part of WWW!
> 
>//www.muc.de/~gert/
>Gert Doering - Munich, Germany                             gert at greenie.muc.de
>fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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