Memory leak in 4.17

RouterOS General
1

Hi,

After MUM in Budapest I’ve upgraded my BGP router from 3.30 to 4.17 - and since that time I was very happy with resoults (for example prefixes where downloaded faster). But yesterday I had a problem with loging to router from bgp. Also from ssh and later mac-telnet.

After few hours I was able to log in for couple of minutes - and router with 1gb of ram mine had only 127 mb free (only routing, 2 full prefix tables).

So - your solution will be to upgrade to 5.x or … ?

M.

2

Upgrade is always removing of old bugs to make room for new bugs.
Try this, maybe your problem will be resolved.

3

Enk, but this is not a solution … :frowning:

4

Did you try it? It is fair game. Either you solve the problem or not. Worth a try.

5

The issue is not with tring - please notice that when someone has bgp router, this is not a toy to play with, but equipment used to serve services …

I’vd made update to 5.2 - for now, cpu usage is much higher than in 3.30 and 4.17 - with traffic ~20m it has 60%! when on 4.17 it had ~20%.

M.

6

You right. But this is not related to our discussion. You can make maintance window early in morning for this purpose and notify your users before that. It is de-facto standart.

7

I’m seeing tha same thing.
I have an RB450G natting 80-100 Mbit/s into 3 vlans.

Since the upgrade from 4.16 to 5.2, the same traffic uses ~20% more CPU.

The funniest thing is that I have high speed PCQ queues, and according to support, this should be much FASTER in v5…



8

v5 will have higher CPU usage compared to v4 and v3 when router has large routing tables. CPU usage increase depends on how frequent route table update is triggered.

9 
 #      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE
 0 A S  0.0.0.0/0                          x.x.65.30          1       
 1 ADC  192.168.1.0/24     192.168.1.1     vlan1              0       
 2 ADC  192.168.20.0/24    192.168.20.1    vlan20             0       
 3 ADC  192.168.21.0/24    192.168.21.1    vlan21             0       
 4 ADC  x.x.65.0/27        x.x.65.27       bridge-wan         0

Is this large? (:


10

Guys [from mt] you got to be kidding me:

[admin@BGP] > system resource print
                   uptime: 1d21m47s
                  version: "5.2"
              free-memory: 338664KiB
             total-memory: 1024840KiB
                      cpu: "Intel(R)"
                cpu-count: 1
            cpu-frequency: 1595MHz
                 cpu-load: 100%
           free-hdd-space: 86813KiB
          total-hdd-space: 123951KiB
  write-sect-since-reboot: 79138
         write-sect-total: 577054
        architecture-name: "x86"
               board-name: "x86"
                 platform: "MikroTik"

Take a look on free memory and cpu usage!

At this moment aprox 5/5 mbit of traffic on vlans (2 peers - 2 full tables).
And unable to log in from winbox - only ssh and mac-telnet.

On this machine there are no additional filters, mangles, nats and other stuff - just bgp.

And after reboot a supprise:

Login: admin
Password: 
Trying 70:71:BC:9D:F9:C8...
Connected to 70:71:BC:9D:F9:C8
Login failed, incorrect username or password

Connection closed