As you could read in one of my previous posts, I have been investigating my Sagem F@st 3464 modem a little, to see if it ran Linux (which it does). With the help of this topic, I was able to login into the modem with telnet. After entering the password and typing the "shell" command, I was presented an ash shell with BusyBox.
Whenever I login into a new Linux system, I have the habit of executing the uptime command. Doing that, I immediately noticed a load average of 1.00. So I checked with top, if anything was keeping the system busy. And yes, there is a process tr98* using about 100% of the CPU all the time. * TR-098 enables remote configuration of QoS parameters for Telco managed CPEs using an ACS (TR-069 server), and is a standard extension to TR-069 protocol.
Mem: 33160K used, 23148K free, 0K shrd, 212K buff, 14648K cached
Load average: 1.00, 0.94, 0.55 (State: S=sleeping R=running, W=waiting)
PID USER STATUS RSS PPID %CPU %MEM COMMAND
746 0 R 672 741 97.0 1.1 tr98
767 0 R 340 757 1.9 0.6 top
574 0 S 3948 1 0.7 7.0 openrg
697 0 S 2168 691 0.0 3.8 vdsld
676 0 S 2168 673 0.0 3.8 vdsld
693 0 S 2168 691 0.0 3.8 vdsld
696 0 S 2168 691 0.0 3.8 vdsld
699 0 S 2168 691 0.0 3.8 vdsld
692 0 S 2168 691 0.0 3.8 vdsld
695 0 S 2168 691 0.0 3.8 vdsld
698 0 S 2168 691 0.0 3.8 vdsld
694 0 S 2168 691 0.0 3.8 vdsld
691 0 S 2168 676 0.0 3.8 vdsld
749 0 S 1804 1 0.0 3.2 sipd
754 0 S 1804 750 0.0 3.2 sipd
756 0 S 1804 750 0.0 3.2 sipd
753 0 S 1804 750 0.0 3.2 sipd
751 0 S 1804 750 0.0 3.2 sipd
755 0 S 1804 750 0.0 3.2 sipd
750 0 S 1804 749 0.0 3.2 sipd
If you start searching the Internet a little bit, you'll quickly find several posts mentioning the Bbox2 or Sagem 3464 becomes pretty warm rather fast. I've also seen a Bbox2 modem at a customer that started to look a bit brown. I believe this might be caused by that tr98 process. Since I have this process eating CPU on both my Bbox2 and my Sagem, this likely is a common problem with all these modems. Hence, I have contacted Belgacom to look into this issue. Having a process using 100% CPU all the time, certainly wont do performance any good. It also wont increase the lifespan, or decrease your energy bill. Let's hope Belgacom will take this serious. Whenever I hear from them, you'll read it here. Meanwhile, if you're worried about this, I suggest to disconnect the modem's power supply whenever you don't need it.