Re: PID 11 using 400% CPU
Hello Dan,
I was having multiple problems with my x86 installation, apart from
the disc spinning continuously. Despite tuning many sysctl parameters,
X clients would not open for non-root users ("max number of clients
reached"); for root, they would open, but after about 30 minutes of
playing xboard (gnuchess), the computer would simply shut down
(without even a proper shut down sequence; worse that DOS BSOD - power
off in a flash); while up, the speed and performance of the system was
abysmal.
I therefore yesterday downloaded the iso for amd64, which is the
architecture of my system. I am going to install it and try it out
over the weekend. Hope things will be better this time around.
Thanks for all your suggestions and advice though.
Regards
Manish Jain
[1]invalid.poin...@gmail.com
On 05-Jul-11 19:50, Dan Nelson wrote:
In the last episode (Jul 05), manish jain said:
On 30 June 2011 10:26, Dan Nelson [2] wrote:
In the last episode (Jun 30), Manish Jain said:
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.
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) ?
I bet that if you ran fstat or lsof on the ppp process, all the writes are
actually to your serial device or a tun device, not to disk. ppp is
unlikely to cause much disk I/O. You'll have to filter out the ppp process
and check your kdump output again.
References
1. mailto:invalid.poin...@gmail.com
2. mailto:dnel...@allantgroup.com
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: PID 11 using 400% CPU
In the last episode (Jul 05), manish jain said: > On 30 June 2011 10:26, Dan Nelson wrote: > > In the last episode (Jun 30), Manish Jain said: > > > > > >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. > > 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) ? I bet that if you ran fstat or lsof on the ppp process, all the writes are actually to your serial device or a tun device, not to disk. ppp is unlikely to cause much disk I/O. You'll have to filter out the ppp process and check your kdump output again. -- Dan Nelson dnel...@allantgroup.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: PID 11 using 400% CPU
On Tue, Jul 5, 2011 at 6:27 AM, manish jain wrote: > 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 Maybe reduce the amount of logging? But look at the logs before turning logging off: maybe there's something wrong with your setup, perhaps you have a flaky line etc...? -cpghost. -- Cordula's Web. http://www.cordula.ws/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: PID 11 using 400% CPU
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 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 > >root11 400.0 0.0 032 ?? RL7:22PM 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 >dnel...@allantgroup.com > ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: PID 11 using 400% CPU
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 >root11 400.0 0.0 032 ?? RL7:22PM 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 dnel...@allantgroup.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: PID 11 using 400% CPU
> From owner-freebsd-questi...@freebsd.org Wed Jun 29 23:07:59 2011
> Date: Thu, 30 Jun 2011 09:37:11 +0530
> From: Manish Jain
> To: freebsd-questions@freebsd.org
> Subject: PID 11 using 400% CPU
>
>
>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. '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
>root11 400.0 0.0 032 ?? RL7:22PM 166:35.46 [idle]
>I have tried multiple tweaks to resolve this - all to no effect. The
>only thing that seems out of place is that polkitd seems to be
>missing. (I have no idea why this is the case). /etc/rc.conf states
>polkitd_enable="YES".
>This happens even in single-user mode, which I used to try to fix any
>filesystem errors with 'fsck -fy' : there were none.
>My system has only 2 partitions : ad8s2a (/) and ad8s2b (swap).
>Any pointers to what might the problem be ? Thanks in advance.
The problem is that you have twin dual-core CPUs or a single 4-core CPU.
The solution is to substitute a single single-core CPU.
This will bring the _system_idle_process_ utilization down to 100% when the
system is _not_ doing anything else.
OR, you can compile the following C program:
#include
int main( int argc, char** argv)
{
while (1);
exit(0);
}
and run, say, 8 copies of it in background. this will reduce the cpu
utilization of PID 11 to roughly 0%.
The fact that the disk is running is absolutely normal.
___
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
PID 11 using 400% CPU
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. '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 root11 400.0 0.0 032 ?? RL7:22PM 166:35.46 [idle] I have tried multiple tweaks to resolve this - all to no effect. The only thing that seems out of place is that polkitd seems to be missing. (I have no idea why this is the case). /etc/rc.conf states polkitd_enable="YES". This happens even in single-user mode, which I used to try to fix any filesystem errors with 'fsck -fy' : there were none. My system has only 2 partitions : ad8s2a (/) and ad8s2b (swap). Any pointers to what might the problem be ? Thanks in advance. Regards Manish Jain [1]invalid.poin...@gmail.com References 1. mailto:invalid.poin...@gmail.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
