unexplained latency, interrupt spikes and loss of throughput on FreeBSD router/firewall system

2020-01-15 Thread John Jasen
Executive summary: Periodically, load will spike on network interrupts on one of our firewalls. Latency will quickly climb to the point that things are unresponsive, sessions will timeout, and bandwidth will plummet. We do not see increases in ethernet pause frames, drops, errors, or anything els

Re: unexplained latency, interrupt spikes and loss of throughput on FreeBSD router/firewall system

2020-01-15 Thread mike tancsa
On 1/15/2020 9:55 AM, John Jasen wrote: > Executive summary: > > Periodically, load will spike on network interrupts on one of our > firewalls. Latency will quickly climb to the point that things are > unresponsive, sessions will timeout, and bandwidth will plummet. A couple of wild stabs... Are t

Re: unexplained latency, interrupt spikes and loss of throughput on FreeBSD router/firewall system

2020-01-15 Thread Navdeep Parhar
On 1/15/20 6:55 AM, John Jasen wrote: > Executive summary: > > Periodically, load will spike on network interrupts on one of our > firewalls. Latency will quickly climb to the point that things are > unresponsive, sessions will timeout, and bandwidth will plummet. Is this with 9000 MTU? Can you

Re: unexplained latency, interrupt spikes and loss of throughput on FreeBSD router/firewall system

2020-01-15 Thread John Jasen
On Wed, Jan 15, 2020 at 5:24 PM Navdeep Parhar wrote: > On 1/15/20 6:55 AM, John Jasen wrote: > > Executive summary: > > > > Periodically, load will spike on network interrupts on one of our > > firewalls. Latency will quickly climb to the point that things are > > unresponsive, sessions will tim