CPU Usage, slow bash ??!

English Install/Boot/Login
1

I have installed opensuse 12.3 on a supermicro server and everything seems so slow…
The server has 24gb ram, and 2 cpu x5570. So it is not about lack of power.
When i say everything seems so slow i refer to slow “ps ax” for example, even a ls -lah it seems to just … display line by line .
If for example i start mc… after i hit enter it takes about 10 seconds till mc is displayed.
The cpu usage seems interesting… i have a lots of … see bellow…
There are a lot of kworker, migration, etc. Any ideea?
PLEASE urgent advice:

top - 19:02:09 up 35 min, 2 users, load average: 0.01, 0.12, 0.17
Tasks: 216 total, 1 running, 213 sleeping, 2 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 16457084 total, 809308 used, 15647776 free, 37060 buffers
KiB Swap: 2103292 total, 0 used, 2103292 free, 525880 cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10631 root 20 0 11196 1640 1068 R 0.7 0.0 0:00.02 top
1 root 20 0 45708 4400 2168 S 0.0 0.0 0:01.15 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.14 ksoftirqd/0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/u:0
7 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/u:0H
8 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/0
9 root -2 0 0 0 0 S 0.0 0.0 0:00.03 rcuc/0
10 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcub/0
11 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcub/1
12 root 20 0 0 0 0 S 0.0 0.0 0:01.67 rcu_preempt
13 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_sched
15 root rt 0 0 0 0 S 0.0 0.0 0:00.03 watchdog/0
16 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
17 root -2 0 0 0 0 S 0.0 0.0 0:00.03 rcuc/1
18 root 20 0 0 0 0 S 0.0 0.0 0:00.06 ksoftirqd/1
19 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/1
21 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/1:0H
22 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/2
23 root -2 0 0 0 0 S 0.0 0.0 0:00.08 rcuc/2
24 root 20 0 0 0 0 S 0.0 0.0 0:00.13 ksoftirqd/2
25 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/2
27 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/2:0H
28 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/3
29 root -2 0 0 0 0 S 0.0 0.0 0:00.04 rcuc/3
30 root 20 0 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/3
31 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/3
33 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/3:0H
34 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/4
35 root -2 0 0 0 0 S 0.0 0.0 0:00.03 rcuc/4
36 root 20 0 0 0 0 S 0.0 0.0 0:00.04 ksoftirqd/4
37 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/4
39 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/4:0H
40 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/5
41 root -2 0 0 0 0 S 0.0 0.0 0:00.02 rcuc/5
42 root 20 0 0 0 0 S 0.0 0.0 0:00.03 ksoftirqd/5
43 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/5
45 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/5:0H
46 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/6
47 root -2 0 0 0 0 S 0.0 0.0 0:00.05 rcuc/6
48 root 20 0 0 0 0 S 0.0 0.0 0:00.10 ksoftirqd/6
49 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/6
51 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/6:0H
52 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/7
53 root -2 0 0 0 0 S 0.0 0.0 0:00.03 rcuc/7
54 root 20 0 0 0 0 S 0.0 0.0 0:00.05 ksoftirqd/7
55 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/7
57 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/7:0H
58 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/8
59 root -2 0 0 0 0 S 0.0 0.0 0:00.00 rcuc/8
60 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/8
61 root rt 0 0 0 0 S 0.0 0.0 0:00.01 migration/8
62 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/8:0
63 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/8:0H

2

So dealing with PC’s running slow is hard to quantify and I am not an expert on Intel Xeon processors. The real issues on speed is, did you do an upgrade or a clean install? If upgrade, was that lower than 12.2? Upgrades below a single version are not supported. I suggest on future posts to use code # for long data lists like I did above.

So, how did you install 12.3 and what applications are too slow to be usable now?

Thank You,

3

Clean install. (Always clean install)
MC (midnight commander) loads in 10 seconds.
ps ax render lines in about 5 seconds (line by line, like scrooling on a windows machine without video card driver)
I also have 12.3 on several machines… runs like hell even those machines have way less cpu/ram resources like this server.
And once again the question… why so many processes? ~250 ??? most of them are in sleep stat (kworker, migration, etc. see above)
Maybe a irq conflict? io problem? video incompatibility?

LE: interesting: Running mc through ssh runs perfect. runnig localy takes 14 seconds.

4

So, one thing that I feel has increased the operation speed of my openSUSE 12.3 installs is to upgrade to kernel 3.11.6 and I have a blog on the subject you can read here. Why not give it a try to see if it might be helpful to you: openSUSE and Installing New Linux Kernel Versions - Blogs - openSUSE Forums

I also must ask if you did a full and complete system update through YaST after the main install was complete? If so, how did you do that update and if not, why not? If you are the kind that likes to use Zypper for software installs and updates from terminal, look at my bash script I call Zypper Command: Zypper Command - Zypper Package Management Menu System - Version 2.00 - Blogs - openSUSE Forums

Thank You,

5

Are you running X or is the command line only.

When I installed 12.3 on my desktop, I noticed a lot of “slowness”. Yet the cpu usage was way low (only 3%). This would be an issue with Xorg.

By the paste of top, it looks like your running KDE, so it could be an Xorg issue. What happens if you run it with out X? Is it still slow? If no, then you have an Xorg configuration error or something. May also be a good idea to check your xorg.log. Also lsmod would reveal which drivers are loaded. Need to know your hardware and what software you have installed. For example, if you have an nvidia card, have you installed the nvidia drivers? If so, how? Please use susepaste for pasting info.

6

Same problem without X.
No nvidia. It is a matrox card. I guess it is using vesa. I dont care about video card. I will mostly use remote access on this one.

@jdmcdaniel3 : i always use a zypper ref, zypper up so yes i always update the distro first thing.
I ask again… those migration, kworker, etc. processes that are in sleep more. I dont think those are normal. On other workstations they appear once maybe twice, but on this server there are lots of them.

7

Your CPU is 100% idle, what is that interesting? Are you running your commands in GUI session (terminal emulation) or directly on text console? And which console - are you using serial port by any chance?

8

Maybe nepomuk indexing? But that should show in top. Curious :\

9

On Fri, 25 Oct 2013 18:36:02 GMT, darkmac
<darkmac@no-mx.forums.opensuse.org> wrote:

>
>jdmcdaniel3;2593515 Wrote:
>> So dealing with PC’s running slow is hard to quantify and I am not an
>> expert on Intel Xeon processors. The real issues on speed is, did you
>> do an upgrade or a clean install? If upgrade, was that lower than 12.2?
>> Upgrades below a single version are not supported. I suggest on future
>> posts to use code # for long data lists like I did above.
>>
>> So, how did you install 12.3 and what applications are too slow to be
>> usable now?
>>
>> Thank You,
>
>Clean install. (Always clean install)
>MC (midnight commander) loads in 10 seconds.
>ps ax render lines in about 5 seconds (line by line, like scrooling on a
>windows machine without video card driver)
>I also have 12.3 on several machines… runs like hell even those
>machines have way less cpu/ram resources like this server.
>And once again the question… why so many processes? ~250 ??? most of
>them are in sleep stat (kworker, migration, etc. see above)
>Maybe a irq conflict? io problem? video incompatibility?
>
>LE: interesting: Running mc through ssh runs perfect. runnig localy
>takes 14 seconds.

That makes me suspect that there is a local video problem.

Just the same try using iotop, it may be interesting.

?-)

10

On 2013-10-25 20:36, darkmac wrote:
> LE: interesting: Running mc through ssh runs perfect. runnig localy
> takes 14 seconds.

Sounds familiar. I have read a similar report recently, but I can’t
remember nor locate where :frowning:

–
Cheers / Saludos,

Carlos E. R.
(from 12.3 x86_64 “Dartmouth” at Telcontar)