Ken, I think this is a DNS issue. Can you please capture with tcpdump the hosts being resolved (e.g. due to HTML code in ntopng) and report?
Regards Luca On 03/23/2018 03:09 AM, Ken Kirchner wrote: > Hello all, > > I’ve setup a new VM as an ntopng server. I have allocated 4 cpu’s and 8GB of > ram. This runs on an all flash array. The host OS is an up to date Red Hat > Linux v7.4 with ntopng v3.2-stable branch deployed. I have a dedicated web > management ethernet interface and a probe interface. > > It works, but the web interface is very unresponsive and often reports time > out errors in my browser (Firefox and Chrome). It is nearly unusable yet top > reports almost no CPU being used. There is only a trickle of data being > monitored and the VM is mostly idle, so I cannot imagine what the problem is. > > This is in a mostly isolated environment, so I have turned off DNS resolution > (-n=3). Could AS lookups or some other internet required query be the cause? > > What can I check next? If I run tcpdump on the probe interface it looks fine, > no packets dropped. I cannot demo this to my boss with this behavior. > > -Ken K. > _______________________________________________ > Ntop mailing list > Ntop@listgateway.unipi.it > http://listgateway.unipi.it/mailman/listinfo/ntop _______________________________________________ Ntop mailing list Ntop@listgateway.unipi.it http://listgateway.unipi.it/mailman/listinfo/ntop
