[j-nsp] MX80 Sampling - High CPU

[Jordan Whited]

I found the issue still present in 12.3R8.7 running on an MX80. In 11.4R7.5
with sampling enabled it was taking upwards of 12 minutes for routes to
propagate to the FIB when taking in a full ipv4 with ~250k active-paths, in
12.3R8.7 I measured it closer to 3 minutes. Seems to be improved, but still
unacceptable.

On Tue, Dec 2, 2014 at 10:12 AM, Scott Granados <scott at granados-llc.net>
wrote:

> I have 12.3R8.7 running on 2 MX-80s and 2 MX-480s with mixed results.  The
> good news is the routers will reconverge with sampling enabled now and the
> PFE programming won’t block hard.  The process is still slow however and
> while we did some testing it still seems that the processes hang during
> large updates although they do eventually un-wedge and complete.  The CPU
> spikes though seem pretty few and far between so that is an improvement.
> I’m hoping the rewrite of the sampled and PFE programming in the 13.3 code
> is improved.  With sampling enabled these boxes reconverge to slowly,
> especially for modern hardware.
>
>
> On Dec 1, 2014, at 6:09 PM, Jordan Whited <jwhited0917 at gmail.com> wrote:
>
> > Has anyone else made the jump to 12.3R8 yet?
> >
> > On Wed, Oct 1, 2014 at 8:35 AM, Justin M. Streiner <
> streiner at cluebyfour.org>
> > wrote:
> >
> >> On Wed, 1 Oct 2014, Sebastian Wiesinger wrote:
> >>
> >> * Graham Brown <juniper-nsp at grahambrown.info> [2014-09-23 22:33]:
> >>>
> >>>> 12.3R8 and 13.3R4 are due out anytime now with the fixes in place. I
> >>>> think
> >>>> there are many people waiting for these two releases...
> >>>>
> >>>
> >>> So, 12.3R8 is out. Any practical experiences if inline jflow /
> >>> sampling is faster now?
> >>>
> >>
> >> Not sure yet.  I need to load it on my lab routers, but I won't know how
> >> it behaves at full scale until I load it in production.
> >>
> >> jms
> >>
> >> _______________________________________________
> >> juniper-nsp mailing list juniper-nsp at puck.nether.net
> >> https://puck.nether.net/mailman/listinfo/juniper-nsp
> >>
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/juniper-nsp
>
>