PID 11 using 400% CPU

[manish jain]

Hello Dan,

It looks like ppp is doing a lot of read and write operations, which keeps
the disk spinning. How do I set this right ? Is there something wrong with
my ppp.conf (see below) ?

ppp.conf :

default:
 set log Phase Chat LCP IPCP CCP tun command
 allow users bourne
# ident user-ppp VERSION (built COMPILATIONDATE)
 set device /dev/cuaU0.0
 set speed 115200
 set dial "ABORT BUSY ABORT NO\\sCARRIER TIMEOUT 5 \
 \"\" AT OK-AT-OK AT&FE0V1X1&D2&C1S0=0 OK \\dATDT\\T TIMEOUT 40 CONNECT"
 set timeout 180 # 3 minute idle timer (the default)
 enable dns # request DNS info (for resolv.conf)

huawei:
 set phone "#777"
 set login
 set authname "internet"
 set authkey ""
 set timeout 180
 disable ipv6cp
 set ifaddr 10.0.0.1/0 10.0.0.2/0 255.255.255.0 0.0.0.0
 add default HISADDR
 accept CHAP


On 30 June 2011 10:26, Dan Nelson <dnelson at allantgroup.com> wrote:

> In the last episode (Jun 30), Manish Jain said:
> >
> >    Hello All,
> >    I have a strange problem with my 8.1 box. After booting, the hard disk
> >    goes into a full-speed never-ending spin.
>
> To see what disk I/O is being done, try running "ktrace -dip 0 ; sleep 10 ;
> ktrace -C", to capture all syscalls done on the entire system (pid 0 plus
> children) for 10 seconds, then run "kdump -m64 | less" to view the results.
> Look for read or write calls.
>
> > 'ps waux' always shows pid
> >    11 as taking 400% CPU utilization :
> >    /root # ps -up 11
> >    USER   PID %CPU %MEM   VSZ   RSS  TT  STAT STARTED      TIME COMMAND
> >    root    11 400.0  0.0     0    32  ??  RL    7:22PM 166:35.46 [idle]
> >    I have tried multiple tweaks to resolve this - all to no effect. The
>
> As for this, what's to resolve?  The idle process is a placeholder with one
> thread per CPU that accounts for time the CPU isn't doing any work.  If you
> want to reduce it's "CPU use", run other CPU-intensive processes :)  BTW,
> Windows has the same thing if you look at task manager; it's called "System
> Idle Process" there.
>
> --
>        Dan Nelson
>        dnelson at allantgroup.com
>