RB SXT 5HPnD high CPU

Hardware MikroTik hardware general
1

Hello,

I have 2 RB SXT 5HPnD devices for a PtP link, from some weeks I have disconections and notice that there is a high CPU load:

I notice that the voltage and temperature values start to goues wrong too:

I see in the tools → profile and and management is high: 30-40%.

How cold I debug this?

I will appecite your help.

Regards.

Edit: Corrected image

2

Sorry but i can’t see your images…
For the disconnections you should provide more details about the ptp configuration…

What do you consider as high temperature?
30%-40% load in the CPU is high but not high enough to cause problems… so as long it stays below 70%-80% percent for me is just fine…

3

Thanks for your reply,

I normally have no CPU usage if there no data transfer, actually there is no traffic and it is high CPU. Here is a graph for 2 month, there are peaks when I transfer lot of data, but actually there is no traffic in the PtP:

The temperature is similar, it can vary from day and night, but not so much. Here 2 month graph:

It happens in both PtP devices, I think it will related to a RouterOS or RouterBoard firmware version. I have remote access to the devices, so is not easy to downgrade the versions.

I actually has long term version: 6.44.5

Regards.

4

The temperature is normal… The CPU load is fine too, you have some peeks close to 80% percent which i guess are because of traffic or something like that…

What is not normal to me is those big voltage drops… those drops can easily cause a reboot of the device…

5

Thanks again Zacharias,

When all goes well, the CPU was justified by traffic. This is one week CPU and traffic in august: [2019-08-21 00:00 - 2019-08-28 00:00]

And this is now, there are some cut for the reboots, but you can see there is enough traffic: [2019-09-28 00:00 - 2019-10-05 00:00]

About the voltage, both devices are feeded by a RB30110 and a RB4011. I will try to use the original PoE injectors.

Regards.

6

Hello again,

I put the original PoE inyector, but same problem:

This is one month ago:

I send a mail to support linking this thread, hope they could help.

The strange thin is that it start happening in both PtP devices at same time, I think it will be related to a routeros upgrade, but I can not confirm.

Kind regards.

7

ALL 400Mhz Mikrotik radio unusable now. Mikrotik change OWN driver & many things now use software- CPU processing. High traffic consume too much CPU load & CCQ & data rate drops & drops & sometimes disconnect. Simple test make TCP bandwidth test on old 5Hnd SXT 400Mhz & 40Mhz channel, datarate drops, CCQ drops even in lab & perfect link.