Combination of Squid Stable and Dansguardian causes very high MBUF
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Hi all. I was having a problem with very high MBUF approaching the limit. Example 24460/25600. This was fairly new. Never happened before. Normally, it would sit around 3460/25600 or so for many many days and never really change much. The only things I had changed is I added squid stable and dansguardian to an otherwise absolutely vanilla setup. So, I wiped the box and re-installed. With no packages loaded, there was no MBUF issue. After adding squid stable, there was still no MBUF issue. After then installing Dansguardian, the MBUF problem returned. So, I removed Dansguardian again leaving only squid stable and the MBUF numbers are back where they have always been. Low. So, I figure this must be an issue with Dansguardian causing some sort of memory leak.
Anyway, it would be nice is it didn't do that because I like dansguardian.
I'm using Pfsense version:
2.0.3-RELEASE (i386)
built on Fri Apr 12 10:22:57 EDT 2013
FreeBSD 8.1-RELEASE-p13 -
Just increase your nmbclusters so you get more. Many workloads will max out the default mbuf values.
http://doc.pfsense.org/index.php/Tuning_and_Troubleshooting_Network_Cards
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OK - I'll do I'll try that tweak. System has 1 nfe0 that I'm using on WAN that is 10/100. The internet never gets to 100 much here. I have 1 dual port PCIe Intel NIC that is 10/100/1000 and 1 single port PCI Intel NIC that is 10/100/1000. Those are em0-em2. The LANs are all disallowed to see each other to give my tenants privacy. All The gigabit Intel NICs are set up as LAN ports. So, will I have to apply this tweak for just the nfe(0) wan, the em(0-3) LANs or for all? I noticed the patches are different for each card type.
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Does anyone know if the patch mentioned in the thread below will be integrated with pfsense at some point (either 2.1.x or 2.0.x)… or is it already?
http://comments.gmane.org/gmane.os.freebsd.devel.net/39495
It sounds like they fixed at least the igb driver to scale hw.igb.num_queues (and maybe mbufs?) better by default according to that somewhat recent thread (june 20th 2013). I don't know if other drivers got the same fix or not. I use quad port nics btw.
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A can confirm that making the changes helped MBUF. No more issues. I didn't have any erratic behaviour so I didn't apply the NIC specific fixes. Just the increased MBUF.
