Increased Memory and CPU Spikes (causing latency/outage) with 2.4.5
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@ScottishTom
What version of the package? Would recommend devel and also try a reboot and see if that persists.
Can also run these two commands to see what particular process is involved:ps auxwww top -aSH"Experience is something you don't get until just after you need it."
Website: http://pfBlockerNG.com
Twitter: @BBcan177 #pfBlockerNG
Reddit: https://www.reddit.com/r/pfBlockerNG/new/ -
@BBcan177 said in Increased Memory and CPU Spikes (causing latency/outage) with 2.4.5:
@t41k2m3
You are running on a physical machine and it looks like you are not experiencing any issues other than higher memory usage. That can be attributed to how many entries are in DNSBL, especially with TLD enabled. I assume it was the same as before but you didn't notice it. DNSBL in Unbound will create a pointer in memory for each domain and it can eat memory. Nothing I can do about that. The upcoming Unbound python integration will make a significant improvement in memory usage tho.@BBcan177 you are correct as to the summary of the situation, including same DNSBL entries, TLD on, only memory usage spikes (and not some of the other issues that seem to appear in virtualized environments). Not sure I'm following the theory of the case though. Meaning, given all else is equal (same pfS settings, same packages and their settings) but for the addition of pfS 2.4.5, it would reasonably follow (in fact proven by process of elimination) that some combination thereof (pfS 2.4.5 and pfB code/settings/others) begot a context writ large favoring these types of issues on different platforms. In fairness, there may be other contributing factors than pfB, though in this particular case, that is ostensibly not the case.
So, question is what could/should/would we do about it? Re: unbound, the python integration is listed as a new feature/change (i.e. not upcoming, but present) and the Unbound 1.9.6 seems to be compiled with support for python. If that was/is intended to be the help/fix, not sure that it is performing quite as hoped. Recognizing this is brand new and may need some burnishing, wanted to get it on the radar screen for you and pfS devs. Thanks for all your efforts.
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@ScottishTom said in Increased Memory and CPU Spikes (causing latency/outage) with 2.4.5:
Just to add another data point : following upgrade to 2.4.5 from 2.4.4p3, I've noticed an increase in memory usage on a pfSense instance installed on a physical machine, but not any drastic increase in CPU usage. Memory usage jumped from ~7% to ~64% with no other changes bar the pfSense upgrade.
Machine info : Intel J3160, 4GB DDR3, Dual Intel 82576EB NIC.
Packages installed : openvpn-client-export, pfBlockerNG
If any more info desired please just let me know.
This seems like virtually the same or similar setup and problem as previously described (with qualification that a process at fault was not yet identified/hypothesized).
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@t41k2m3
I posted above two commands that you can use to find what is using memory. Report back with what you find. I haven't spent much time with the release of 2.4.5 as things have been hectic. I haven't checked if the version of Unbound has changed from 2.4.3/4. That might be a reason if something has changed in the Resolver code.
In regards to the upcoming Unbound python integration, what you see in the Resolver settings will allow for a future release to integrate with the Resolver. It's just the plumbing and nothing else. There is no Python integration released yet. -
Hi, thanks for the prompt reply.
Currently running version 2.1.4_21 as installed from pfSense's package manager.
Output of ps auxwww sorted by memory usage:
Output of top -aSH sorted by size
Reboot does not appear to change anything, will just go try the devel version. Hope that helps.
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@ScottishTom
Would recommend to uninstall pfBlockerNG and install pfBlockerNG-devel. Then see how that goes. Ensure "Keep settings" is enabled. You will need to re-enter the MaxMind key into the IP tab. Also best to reboot to clear Unbound. -
Have done as requested, now running pfBlockerNG-devel 2.2.5_29.
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uninstalled pfBlockerNG
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installed pfBlockerNG-devel
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rebooted
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force-updated DNSBL as it was complaining about being out of date.
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rebooted again
Still appear to be at ~64-65% memory usage
FWIW I'm not complaining at all personally, the software is working fine for me and I'm seeing packets being intercepted by the block lists. Just seems strange to have had an almost 10x memory usage increase.
Appreciate the blocker software and your work on it very much, really simplifies things :)
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@ScottishTom
Thanks for reporting back. Will check it out tomorrow. -
I'm getting the same thing with Hyper-V host, 2 deticated NICs all offloading turned off.
Interesting tidbit is that with me if I make any settings change and save it, it hanges for 20-30 seconds then pins the CPU, pings even over the lan to pfSense won't respond. Then it slowly comes back.
I have OpenVPN running but had no issues with 2.4.4. In the OpenVPN logs there is now an endless stream of: AEAD Decrypt error: bad packet ID (may be a replay): that weren't there before. The System time is correct.
AES-NI On or off doesn't make a difference (even after restart)
Internet is PPPoE if that makes a difference.
Download speed is normal. Upload speed is about half of what it should be compared to 2.4.4.
Note traffic shaper is enabled and I have some floating rules for Google Hangouts.
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One thing to try would be to disable the Spectre/Meltdown mitigation, reboot, and see if that improves things.
I wonder if improvements have been made to it in FreeBSD 11.3 but those improvements maybe don't play well with virtualisation.I'm not in a position to test at the moment, can anyone else give this idea a go?
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@muppet I just disabled the meltdown mitigation, rebooted. Still have 100% CPU
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I'm experiencing similar issues with 2.4.5. My CPU usage spikes to 100% anytime I access a website and causes an outage for about 20 seconds.
Specs:
Proxmox 6.1-8
CPU: 8 vCPUs
Memory: 8GBPackages:
acme 0.6.5
Avahi 2.1_1
openvpn-client-export 1.4.20
pfBlockerNG 2.1.4_21
Service_Watchdog 1.8.6
snort 3.2.9.10_2
softflowd 1.2.6
squid 0.4.44_15
Status_Traffic_Totals 2.3.1 -
I finally got my Hyper-V virtualized install back to mostly working by removing all IP alias lists that PFBlocker had created, except one that was critical for me. Once this was done, I only get 100% cpu for a second or two during the times pfctl runs. I can deal with that over the 5 minutes lockups that were occuring before.
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@BBcan177 said in Increased Memory and CPU Spikes (causing latency/outage) with 2.4.5:
@ScottishTom
Thanks for reporting back. Will check it out tomorrow.@BBcan177 realizing this is going to sound somewhat odd... everything went back to normal on its own over night (typical state prior to the 2.4.5 upgrade - i.e. memory usage around 20%). None of the other issues - e.g. CPU spikes, latency, outage - manifested themselves on this setup. Also implemented your fix for Shalla and UT1 found here: https://forum.netgate.com/topic/151689/shallalist-and-ut1-lists-not-working-on-2-4-5-release-pfblockerng-devel-2-2-5_29
Thanks for your help debugging. -
Hi,
I reverted 3 upgrades already due to performance issues, all 3 uses pfblocker, 2 are virtualized with vmware and one with hyper-v (gen 1 vm).
Look at the before/after graphs, impossible to upgrade to be honest:
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The new release is like how the RC was for me 100% CPU usage locks the system up so you can't do anything. I did a fresh install no packages less than 6 firewall rules and basic setup for routing and it started locking up today lasted about 2 days before I had to roll back to 2.4.4; only thing I changed was the subnet.
I'm running proxmox with:
CPU(s)
24 x Intel(R) Xeon(R) CPU X5675 @ 3.07GHz (2 Sockets)
Kernel VersionLinux 5.3.10-1-pve #1 SMP PVE 5.3.10-1 (Thu, 14 Nov 2019 10:43:13 +0100)
PVE Manager Versionpve-manager/6.1-3/37248ce6
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I also did an upgrade from 2.4.4p3 to 2.4.5 that failed to run smoothly after. I had to roll back immediately.
Running PFBlockerNG and OpenVPN Export packages and running OpenVPN Server and client.
Virtual Machine VM running on Windows Server 2016 with 1GB RAM.
Will delete packages, disable OpenVPN and add another 1GB memory and see if it goes any better. -
Out of curiosity, can the users experiencing Increased memory and CPU spikes in 2.4.5 try to increase this setting?
Start at 2M and go up from there.
pfSense > Advanced > Firewall & NAT > Firewall Maximim Table Entries
A "Filter Reload" should be sufficient, but a reboot may be necessary to enable the change.
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Just for reference, I've upgraded few hours ago my CARP nodes:
- ESXi 6.7U3, 1 Virtual CPU, 1GB RAM
- Packages => avahi, bandwidthd, cron, FTP_Client_Proxy, mailreport, nmap, Open-VM-Tools, openvpn-client-export, pfBlockerNG-devel, RRD_Summary
- GeoIP not used in pfBlocker, only DNSBL
- Firewall Maximim Table Entries already set at 5M
RAM usage (from inside pfSense) it's more or less the same at around 80%, CPU usage looks even a little bit better (from ESXi):
No other issues with latency/filter reload etc..
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@BBcan177 said in Increased Memory and CPU Spikes (causing latency/outage) with 2.4.5:
Out of curiosity, can the users experiencing Increased memory and CPU spikes in 2.4.5 try to increase this setting?
Start at 2M and go up from there.
pfSense > Advanced > Firewall & NAT > Firewall Maximim Table Entries
A "Filter Reload" should be sufficient, but a reboot may be necessary to enable the change.
@BBcan177 spoke too soon as mem spikes problems are back... updated to devel 2.2.5_30 and increased max table entries as you suggested to 2.5 and 3.0 M.
Neither made a significant dent in that mem usage stays at or around 80%. One piece of good news is functionality degradation seems to not happen (other than fitful keystroke lag in ssh, no or limited latency or packet loss).
Looking at ps and top results per your request, found the following (suggesting unbound is the culprit, perhaps together with or partly due to the size of DNSBL entries):
ps -auxwwwm
USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND
unbound 5896 0.0 47.7 7398308 3973492 - Ss 11:59 0:31.38 unbound -c unbound.confNotice high % of MEM (47%, second highest process is at 3%)
top -aSH -o size
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
5896 unbound 20 0 7225M 3880M kqread 0 0:31 0.00% unbound -c unbound.conf{unbound}
5896 unbound 20 0 7225M 3880M kqread 2 0:00 0.00% unbound -c unbound.conf{unbound}
5896 unbound 20 0 7225M 3880M kqread 2 0:00 0.00% unbound -c unbound.conf{unbound}
5896 unbound 20 0 7225M 3880M kqread 2 0:00 0.00% unbound -c unbound.conf{unbound}Notice high SIZE (second highest process uses about 11% of an unbound thread utilization)
You had also mentioned earlier that you were not sure what had changed in 2.4.5 as far as unbound. From what I am seeing, unbound was upgraded from 1.9.1 to 1.9.6 (w/python support). Please let me know if any of this data may trigger any ideas on what to look for further to debug this thing.
