Christoph, if you are using CARP/HA for your two routers, see https://redmine.pfsense.org/issues/4310 "Limiters + HA results in hangs on secondary."
Alternatively if the overnight traffic is due to an rsync, rsync can limit its own bandwidth also. -- Steve Yates ITS, Inc. -----Original Message----- From: List [mailto:list-boun...@lists.pfsense.org] On Behalf Of ED Fochler Sent: Wednesday, October 4, 2017 2:05 PM To: pfSense Support and Discussion Mailing List <list@lists.pfsense.org> Subject: Re: [pfSense] High-latency when traffic reaches 80% wirespeed I have a similar situation and I solved it with limiters. I'm also a fan of limiters to ensure fair sharing of uplink bandwidth by internal users. I haven't tried changing system tunables though, so that solution may be better. Nothing is sent through the limiter until you create a rule that catches the traffic and routes it through the limiter, so you're not going to accidentally slow everything down just by creating a rule. The behavior you're speaking of sounds like your machine is getting maxed out by interrupts or some internal bandwidth. Setting up a limiter sounds like a better solution than pushing the hardware to the point of unrefined behavior. ED. > On 2017, Oct 4, at 4:08 AM, Christoph Haas <em...@christoph-haas.de> wrote: > > Dear list, > > I have become a huge fan of pfSense and managed to replace our old > routers at work by two nifty Netgate SG-4860 gateways. They work nearly > perfectly. I just have a few seperate internal VLANs (e.g. for > administration, monitoring and backup) that give me a headache. Every > day at the same time(s) there are spikes in traffic (I can see in the > dashboard) between two VLANs. Traffic goes up to pretty much 800 Mbps > for 1-2 minutes. > > During that time our monitoring system goes wild. High latencies and > even ping losses. CPU load of the router is shown at around 50%. Once > the traffic goes below 800 Mbps all is instantly fine again. > > I tried to simplify the firewall rules (e.g. let through all the > traffic) but that did not help. Is there anything I can do? Any hidden > switches? Anything to find and fix the situation? Traffic shaping for > ICMP? Unicorn dust? > > Thanks in advance for your hints. > > …Christoph > _______________________________________________ pfSense mailing list https://lists.pfsense.org/mailman/listinfo/list Support the project with Gold! https://pfsense.org/gold