WNDR3700v2 100% idle CPU usage

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Derpcrawler
DD-WRT Novice


Joined: 19 Mar 2013
Posts: 4

PostPosted: Wed Jun 05, 2013 22:43    Post subject: WNDR3700v2 100% idle CPU usage Reply with quote
hello, I noticed that after day or two router start to have some issues. It goes to 100% CPU usage even if there is no heavy load on the network.

I am running latest build (build 21676). I don't have NAS storage, USB devices or VPN running, I even disabled SPI firewall in hope that it will stop going into 100% CPU usage during idle state.

The thing is, as soon as I restart router CPU usage goes back to normal - 2-5% during idle, but it randomly goes to 100% after 2-3 days of uptime.

I didn't have this issue at all on previous build. is it some bug introduced with the latest build?
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xakep
DD-WRT User


Joined: 23 Jun 2008
Posts: 68
Location: Brooklyn, NY

PostPosted: Wed Jun 05, 2013 23:03    Post subject: Re: WNDR3700v2 100% idle CPU usage Reply with quote
Derpcrawler wrote:
hello, I noticed that after day or two router start to have some issues. It goes to 100% CPU usage even if there is no heavy load on the network.

I am running latest build (build 21676). I don't have NAS storage, USB devices or VPN running, I even disabled SPI firewall in hope that it will stop going into 100% CPU usage during idle state.

The thing is, as soon as I restart router CPU usage goes back to normal - 2-5% during idle, but it randomly goes to 100% after 2-3 days of uptime.

I didn't have this issue at all on previous build. is it some bug introduced with the latest build?


Hi, I am on 21286 and actually I just looked on my CPU load and it's indeed 100% so what I did is I went to SSH terminal and executed command "top" to see all process load. And I am watching on both of them at same time. GUI (web) Version is totally wrong. My combined load is MAYBE 30% because I have transmission working and few other things. But this is good question why is it like that. But if my opinion this is incorrect information and if you have openwrt installed on your router run top command to see all processes that currently running and just see for your self.

Code:

4516     1 root     S     2932   5%  15% httpd -p 80
 3941     1 root     S    18880  31%  13% transmission-daemon -g /mnt/sda_part4
  691     2 root     SW       0   0%   1% [usb-storage]
  943     1 root     S     2164   4%   1% hostapd -B -P /var/run/ath0_hostapd.p
 2318     1 root     S     1796   3%   0% upnp -D -W eth1
  160     2 root     SW       0   0%   0% [mtdblock2]
 4333     1 root     S     3076   5%   0% /usr/sbin/smbd -D --configfile=/tmp/s
 4328     1 root     S     2900   5%   0% /usr/sbin/nmbd -D --configfile=/tmp/s
 1029     1 root     S     2152   3%   0% hostapd -B -P /var/run/ath1_hostapd.p
  572     1 root     S     2020   3%   0% watchdog
 4486     1 root     S     2008   3%   0% wland
 1518     1 root     S     1980   3%   0% resetbutton
    1     0 root     S     1760   3%   0% /sbin/init
 1186     1 root     S     1756   3%   0% ttraff
 2136     1 root     S     1756   3%   0% process_monitor
 4330     1 root     S     1636   3%   0% proftpd: (accepting connections)
 5144  5136 root     R     1508   2%   0% top
 5131  1207 root     S     1300   2%   0% dropbear -b /tmp/loginprompt -r /tmp/
 1207     1 root     S     1236   2%   0% dropbear -b /tmp/loginprompt -r /tmp/

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