Hi Christian,

What is high load for you?
Remember ntopng will decode every packet at L7 to try to identify the protocol, that means It will read the full packet, every packet.

I have ntopng in a very normal server (Intel(R) Xeon(R) CPU X3430 @ 2.40GHz and 8Gb RAM), with 1 switch port mirrored to 1 interface on the server with arround 400Mbps+ and 53k+ pps and this is my load average.

ntop@ntop:~$ top
top - 19:35:51 up 101 days,  6:26,  2 users,  load average: 3.90, 4.73, 4.49
Tasks:  92 total,   3 running,  89 sleeping,   0 stopped,   0 zombie
Cpu(s): 3.5%us, 1.6%sy, 0.0%ni, 80.1%id, 13.5%wa, 0.1%hi, 1.1%si, 0.0%st
with those TOP Proccess
14564 ntop      20   0 1965m 1.1g 5400 S   42 14.2  61:40.36 ntopng
16400 redis     20   0  163m 153m  280 R   26  1.9   0:00.13 redis-server
14312 root      20   0 18748 4940 1720 D    6  0.1   4:02.32 dibbler-server
 1156 redis     20   0  163m 153m  612 R    2  1.9   5888:00 redis-server

This is the normal behaviour and cpu load, at least as far i know.

Regards,


El 15/05/2014 18:12, Christian Rößner escribió:
Hi,

I had installed ntopng from SVN and compiled it on an HP ProLiant G4 server 
with 6GB RAM and 2 CPUs. Okay, load got high and therefor I decided to by a new 
machine for that task. Now it is a HP ProLiant SEM316M1 (same as DL160G6) with 
24GB RAM. Tripple channel. And I still have too high load on the system. I am 
totally stuck and frustrated.

I have mirrored 3 witch ports and they are connected to a separate port on the 
server. The totally traffic that arrives on this NIC is no more than 50MBit/s. 
So this is really less.

I have installed irqbalance and numad. The RAID-controller is battery backed up.

So currently I have no clue, what is going wrong. As this ntopng is from SVN, I have 
updated several times. Always doing a "make clean" and ./configure.

The system is a Gentoo hardened 3.13.10 kernel.

I have done paxctl -cm on the ntopng binary.

This is my current ntopng configuration:

# ntopng.conf
#

-n=3
-i=enp2s0f1
-d=/opt/ntopng/data
-G=/opt/ntopng/var/run/ntopng.pid
-H=0
-w=8080
-W=8443
-m=192.168.2.0/24,193.239.104.0/22,217.199.204.10/32
-p=tcp:216@SSH
-q=1
-A=0
-U=ntopng
-e

I have attached a log.txt, gzip compressed, which should give a good overview 
of this hardware and current configuration. I really, really was happy, if 
somewhat could point me to a problem with this server/ntopng.

svn info
Path: .
Working Copy Root Path: /usr/local/src/ntopng
URL: https://svn.ntop.org/svn/ntop/trunk/ntopng
Repository Root: https://svn.ntop.org/svn/ntop
Repository UUID: a02cd0c1-8e76-42e1-a119-56f9641475e2
Revision: 7598
Node Kind: directory
Schedule: normal
Last Changed Author: deri
Last Changed Rev: 7597
Last Changed Date: 2014-05-06 17:12:17 +0200 (Tue, 06 May 2014)

Thanks a lot in advance

-Christian Rößner




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