serious packet routing issue causing ntpd high load?

Jeremy Chadwick freebsd at jdc.parodius.com
Wed Oct 5 22:49:07 UTC 2011


On Wed, Oct 05, 2011 at 11:45:52PM +0100, Steven Hartland wrote:
> ----- Original Message ----- From: "Jeremy Chadwick"
> <freebsd at jdc.parodius.com>
> 
> >1428 root        1  44    0 11900K  2860K select  0   0:17  0.00% /usr/sbin/ntpd -c /conf/ME/ntp.conf -p /var/run/ntpd.pid -f
> >
> >And "route -n monitor" shows no anomalies here.
> >
> >Maybe you should tcpdump to find out if there is a client or peer which
> >is constantly pounding ntpd for some reason, or if ntpd is constantly
> >nagging some peer?  Not sure.
> 
> Yep already checked this it seems we're seeing a MISS per packet sent
> to mysql clients :(

Can you explain what "MISS per packet" means, and what MySQL has to do
with ntpd?  Two confusing statements in one!  :-)

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                   Mountain View, CA, US |
| Making life hard for others since 1977.               PGP 4BD6C0CB |



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