CPU utilization > 90%

pgloor · Mar 14, 2018

CPU utilization > 90%

Since yesterday our internet feels extremely slow. My son feels the same way too. It doesn’t matter whether the computer is connected to the Internet box via WLAN or with a cable via the LAN.

Internet speed tests for http://hsi.bluewin.ch/speedtestJs are usually only slightly below the expected 40 Mbit/s. On the other hand, connections, such as to the SBB timetable, break down unexpectedly during the search. It sucks!

When I looked at the diagnosis a little more closely today, I noticed that the CPU utilization of the Internet Box was almost always over 90% high for hours over the last 24 hours, with a few exceptions. Even at night when the computers were switched off.

The > 90% CPU is also present when there is really no or hardly any traffic.

After a restart, the utilization was immediately around 80% from the start and after an hour it was back to 90%, and the trend was rising.

What could be going on and what should I do? It’s still working so far, but I think the problems with the “slow” connection and the > 90% CPU usage are related.

Otherwise, I had the impression that the problems arose after I deactivated a port forwarding that I no longer needed. Port forwardings are no longer active.

pgloor · Mar 14, 2018

Maybe this has been resolved. I also deleted the port forwardings and not just deactivated them. Then I restarted the Internet Box. Afterwards the CPU utilization briefly went to 89% and then fell back to < 20%.

I hope it stays that way.

pgloor · Mar 14, 2018

Unfortunately it didn’t help. Same thing again this evening and as I’m writing this I’m not even able to log into the Internet Box after I restarted the box.

kaetho · Mar 15, 2018

Hi,

which router do you use? What firmware is on it? The issue of increased CPU utilization is known and should be addressed with the [current beta version](https://www.swisscom.ch/de/privatkunden/hilfe/internet/firmware-aktualisierungen-fuer-ihre-internet-box.tab -internet-box-2.html) should actually be fixed. I would install it (select the router on the page and then scroll all the way down…)

Thomas

pgloor · Mar 15, 2018

Internet box standard with firmware 08.08.28. Tonight I couldn’t even log into the box.

The quick tests only said that something was wrong with the router. At the end of the questionable three tests, I was supposed to hire a technician for a fee! What a disgrace.

I then performed a hardware reset (with the paper clip) and lo and behold, it seems to have achieved something.

Somehow I still don’t trust it. My son’s iPhone showed up in the overview as a wired device this morning. That’s not possible at all.

I then removed it from the device list and now it appears again under WLAN but with -2 at the end of the name.

My trust in this box is decreasing, as is my trust in Swisscom in general.

WalterB · Mar 15, 2018

@pgloor

I wouldn’t completely rely on the network view on the Internet boxes, they’re still working on improving it, but it shouldn’t have any influence on operation.

Master · Mar 15, 2018

Could be many things.

If you have actually generated any loops, turn on STP.

pgloor · Mar 15, 2018

I wanted to, but couldn’t :roll_eyes: I don’t even know how this setting was set .

As already mentioned, since the HW reset tonight the utilization has returned to normal.

creatime · Mar 16, 2018

I had the same problems with the standard Internet box… high CPU utilization and difficult access to the box, plus there were WiFi interruptions… I bought the IB2, which is currently running perfectly with the firmware 09.00.60/09.00.49/ 01241

creatime · Mar 16, 2018

Question what exactly does this mean… The Spanning Tree Protocol (STP) ensures that no network loops are generated by blocking redundant paths in the network. Blocked Ethernet ports are displayed in the web portal.?

AAnonymous1 · Mar 16, 2018

January 9, 2028 (is listed as beta on our homepage) is also the final version. This has been installed on all boxes for 2-3 days. Of course, this takes a few days given the number of boxes. Therefore, you can also install the firmware manually if you want.

This applies to the Internet Box Standard and Plus. New software for the Internet-Box 2 and WLAN-Box is in the final stages and will be released soon.

pgloor · Mar 16, 2018

After I performed the hardware reset, set STP and removed the strange entry of an iPhone from the device list, everything is stable again.![:smile:](https://community.swisscom.ch/html/@56675CEE52B2535AADE735290D6EE556/images /smilies/smiling.png “:smile:”)

I also removed the repeater or no longer connected it, but I had already switched it off. This dates back to an earlier installation, but is probably no longer needed because in connection with the switch from ISDN/Centro Grande to the Internet box, the location of the WLAN router was also changed and could be placed more centrally.