trickle causes 100% CPU usage

[akudewan]

Whenever I run any program by using trickle to control the bandwidth, its CPU usage rises to 100%.

For instance:
# trickle -d 10 apt-get upgrade
will cause the "http" process to use 100%

Output of "top":
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3066 root 20 0 5240 1964 1664 R 100 0.1 0:24.42 http

--------------
$ ps aux | grep 3066
root 3066 97.1 0.1 5240 1964 tty1 S+ 19:50 1:03 /usr/lib/apt/methods/http
akudewan 3121 0.0 0.0 3004 736 pts/1 S+ 19:51 0:00 grep 3066

I'm using Ubuntu Hardy, and have a Core2Duo 2.33GHz.

[superkiwi (eriflo)]

Same here. Compiling 1.06 and 1.05 (http://monkey.org/~marius/pages/?page=trickle) also gives 100% cpu. I'm on Intrepid.

[Severin H (severinh)]

I can confirm this. Since the bandwidth throttling support of HellaNZB is not really what it claims to be, I tried to limit the download speed using trickle, but the 100% CPU usage is kind of a show stopper.

[David Roberts (david.roberts)]

I can also confirm this (on intrepid):

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12785 root 20 0 5420 2064 1712 R 92.5 0.4 0:14.64 http

I also tried using trickle after starting trickled, which reduced the CPU usage of http, but this was then consumed by trickled:

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10460 david 20 0 2336 704 564 R 57.9 0.1 1:12.41 trickled
11869 root 20 0 5420 2076 1724 S 35.0 0.4 0:43.22 http

[Thomas Schwinge (tschwinge)]

This has been fixed through Debian version 1.07-7; see <http://bugs.debian.org/375173>.

[Severin H (severinh)]

I can confirm that trickle 1.07-7 works just fine on Ubuntu 9.10 (64-bit).