Community discussions

MikroTik App
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

High CPU load or not?

Sun Mar 07, 2010 4:15 am

Hy, a few days ago i bought a RB450G routerboard
The problem is the CPU load. On the most part of the time is up to 100 %. No TCP SYN flood, or UDP.

NR of connexions: 15000 (total ip's conected to the router from outside."PS: I have hub hosting")
Trafic: 40 Mbps
Configuration: eth1 - Internet provider
eth2-5 bridged togheder and share /24 ip class
No firewall rule added or queues.

Or 2000 connexions
Trafic 5 Mbps =>>CPU 40 %

When the CPU is 100 % i have imense lag, even local ping failures.
Is it normal ?
 
RK
Long time Member
Long time Member
Posts: 565
Joined: Tue Nov 21, 2006 11:22 am
Location: Winnipeg, Canada and Central America

Re: High CPU load or not?

Mon Mar 08, 2010 9:22 am

How about, instead of bridging ports 2-5, you put them in switch mode?
Will save you a ton of CPU.
 
aaa
Member
Member
Posts: 458
Joined: Mon Apr 11, 2005 11:54 am
Location: Latvia, Baltezers

Re: High CPU load or not?

Mon Mar 08, 2010 9:37 am

And what RouterOS you use?
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Mon Mar 08, 2010 9:59 am

MikroTik RouterOS 3.25 (c) 1999-2009

I've tried to use eth1 as gateway and eth2 directly conected to linux server but it is worse. The lag is much higher. And the router gives kernel failures and restarts itself.
DC Power : 18 V, 4A
 
aaa
Member
Member
Posts: 458
Joined: Mon Apr 11, 2005 11:54 am
Location: Latvia, Baltezers

Re: High CPU load or not?

Mon Mar 08, 2010 10:23 am

I have same configuration but PSU is 24V; 0.8A I don't have any problem more then 1 year. WAN trafic some times goes up to 100-200mbit
You do not have the required permissions to view the files attached to this post.
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Mon Mar 08, 2010 1:10 pm

I think the power is not the problem. something else... i don't know
For example.... at 4 am is not trafic (max 4 mbps) but cpu 50 % :(
I've tried to reset the router... and upload the back-up again but still the same ting...
Other ideas? Is it possible that the routerboard to have an error in OS? or some hardware damaged ?
 
aaa
Member
Member
Posts: 458
Joined: Mon Apr 11, 2005 11:54 am
Location: Latvia, Baltezers

Re: High CPU load or not?

Mon Mar 08, 2010 1:47 pm

Run /system check-installation in terminal . Else you can open RB case and check electrolytic capacitors.

http://forum.mikrotik.com/viewtopic.php?f=3&t=39091
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6263
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Re: High CPU load or not?

Mon Mar 08, 2010 1:50 pm

upgrade to 3.30 or even to version 4.6 (check if everything is ok with license while upgrading and after upgrade) also, create supout.rif file and set it to distributor you bout device from.

i would suggest to double-check the settings if everything makes sense. as RB450G is quite powerful.
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Mon Mar 08, 2010 1:55 pm

[admin@MikroTik] > /system check-installation
package routing-test is disabled
checking advanced-tools package...
package ipv6 is disabled
checking routing package...
checking routerboard package...
checking hotspot package...
checking ppp package...
checking wireless package...
checking dhcp package...
checking security package...
checking system package...
done

The capacitors are fine but de LEDs from every port is lightening verry slow, when cables are unplugged.

janisk how do i upgrade, do you have a tutorial please?
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6263
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Re: High CPU load or not?

Mon Mar 08, 2010 3:43 pm

this is how you upgrade:
http://wiki.mikrotik.com/wiki/Upgrading_RouterOS


this is what else you can do with packages and some meanings one what they are for:
http://wiki.mikrotik.com/wiki/Packages
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Fri Mar 12, 2010 1:34 pm

Tested the router again after upgrading... Still the same thing. I think the router doesen't suport huge number of simultaneos connexions. Sorry but mikrotik is a bad idea and not good.
 
User avatar
janisk
MikroTik Support
MikroTik Support
Posts: 6263
Joined: Tue Feb 14, 2006 9:46 am
Location: Riga, Latvia

Re: High CPU load or not?

Fri Mar 12, 2010 4:22 pm

using abstract values like "huge" wont help you solve the problem you are having. What is huge, maybe for that load you should have gotten RB1000?
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Fri Mar 12, 2010 8:10 pm

Huge = 20.000 unique ip connexions in rush hour and bandwidth 50 mbps.

For example a hosted hub requires an ip. And that hub have's for example 300 users, that means 300 ip's that router have to maintain and forward to hub ip. A hub with 300 users,consumes 30 KB /s
 
strg
Member Candidate
Member Candidate
Topic Author
Posts: 101
Joined: Sun Mar 07, 2010 4:01 am

Re: High CPU load or not?

Fri Mar 19, 2010 11:03 pm

Now i have the following configuration

two bridges

bridge 1 - ether 0, ether 1
bridge 2 - ethet 2, ether 3, ether 4

Provider internet cable -> ether0 - > out to server eth0 via ether1

Out from server via eth1 - > to router ether2 -> out from router to server 2 via ether 3, ether 4 and 5 to clients.

I'm using firewall on bridge interfaces and queues.

The procesor stays below 60 % when is rush hour and 40 mbps bandwith on upload, download below 10 mbps

Why doesen't work with initial configuration ?? (provider - > router with dhcp configured /24 class) the trafic is the same. :(

Who is online

Users browsing this forum: No registered users and 22 guests