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mbeltran at americatel.com.sv

2005-May-13 17:38 UTC

[CentOS] centos + kswapd0 error

Hi all

I have a box with Centos 4 and qmail with all pathches. since Last month i
have had twice the same problem. The process kswapd0 uses all my resources
of CPU and RAM memory and the consequence is that my local queue grow up and
the box go slow too.

The first time i guess the problem was the version of the kernel, so i did
an upgrade form kernel.i686 2.6.9-5.0.3.EL to kernel.i686 2.6.9-5.0.5.EL

apparently the problem was solved but today the problem came again. The
following snapshot shows the situation:


top - 10:53:48 up 16 days, 20:05,  1 user,  load average: 119.27, 116.16,
114.33
Tasks: 528 total,  13 running, 515 sleeping,   0 stopped,   0 zombie
Cpu(s):  5.4% us, 89.4% sy,  0.0% ni,  0.3% id,  4.8% wa,  0.0% hi,  0.1% si
Mem:   2075012k total,  2073404k used,     1608k free,    71056k buffers
Swap:  4192924k total,  4192924k used,        0k free,    36380k cached

PID    USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+     COMMAND
60     root      17   0     0    0    0 D 75.4  0.0   585:22.79  kswapd0
2164   root      15   0  1736  484  432 S 31.0  0.0   31:57.07   couriertcpd
16334  vpopmail  19   0  2660  804  668 R 24.7  0.0   0:01.69    imapd
2158   root      15   0  3264  488  432 S 23.4  0.0   1:17.51    couriertcpd
32608  apache    16   0 21604 8440 3016 R 15.5  0.4   1:38.09    httpd
15284  vpopmail  18   0  4384 1032  760 R 14.9  0.0   0:08.32
vdelivermail



I really do not know what thing should i do for solve this problem

thanks in advance

Mario

Johnny Hughes

2005-May-13 18:18 UTC

head link

[CentOS] centos + kswapd0 error

On Fri, 2005-05-13 at 11:38 -0600, mbeltran at americatel.com.sv
wrote:> Hi all
> 
> I have a box with Centos 4 and qmail with all pathches. since Last month i
> have had twice the same problem. The process kswapd0 uses all my resources
> of CPU and RAM memory and the consequence is that my local queue grow up
and
> the box go slow too.
> 
> The first time i guess the problem was the version of the kernel, so i did
> an upgrade form kernel.i686 2.6.9-5.0.3.EL to kernel.i686 2.6.9-5.0.5.EL
> 
> apparently the problem was solved but today the problem came again. The
> following snapshot shows the situation:
> 
> 
> top - 10:53:48 up 16 days, 20:05,  1 user,  load average: 119.27, 116.16,
> 114.33
> Tasks: 528 total,  13 running, 515 sleeping,   0 stopped,   0 zombie
> Cpu(s):  5.4% us, 89.4% sy,  0.0% ni,  0.3% id,  4.8% wa,  0.0% hi,  0.1%
si
> Mem:   2075012k total,  2073404k used,     1608k free,    71056k buffers
> Swap:  4192924k total,  4192924k used,        0k free,    36380k cached
> 
> PID    USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+     COMMAND
> 60     root      17   0     0    0    0 D 75.4  0.0   585:22.79  kswapd0
> 2164   root      15   0  1736  484  432 S 31.0  0.0   31:57.07  
couriertcpd
> 16334  vpopmail  19   0  2660  804  668 R 24.7  0.0   0:01.69    imapd
> 2158   root      15   0  3264  488  432 S 23.4  0.0   1:17.51   
couriertcpd
> 32608  apache    16   0 21604 8440 3016 R 15.5  0.4   1:38.09    httpd
> 15284  vpopmail  18   0  4384 1032  760 R 14.9  0.0   0:08.32
> vdelivermail
> 
> 
> 
> I really do not know what thing should i do for solve this problem
> 
> thanks in advance
> 
> Mario
I think this bug is your problem:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150971

You can try the kernel at:

http://people.redhat.com/davej/kernels/RHEL4/RPMS.kernel/

(or I can give you version 2.6.9-6.37.EL that is in 4Update1 beta)
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mbeltran at americatel.com.sv

2005-May-13 18:45 UTC

head link

[CentOS] centos + kswapd0 error

>> Hi all
>> 
>> I have a box with Centos 4 and qmail with all pathches. since Last
month
i>> have had twice the same problem. The process kswapd0 uses all my
resources>> of CPU and RAM memory and the consequence is that my local queue grow
up
and>> the box go slow too.
>> 
>> The first time i guess the problem was the version of the kernel, so i
did>> an upgrade form kernel.i686 2.6.9-5.0.3.EL to kernel.i686
2.6.9-5.0.5.EL
>> 
>> apparently the problem was solved but today the problem came again. The
>> following snapshot shows the situation:
>> 
>> 
>> top - 10:53:48 up 16 days, 20:05,  1 user,  load average: 119.27,
116.16,
>> 114.33
>> Tasks: 528 total,  13 running, 515 sleeping,   0 stopped,   0 zombie
>> Cpu(s):  5.4% us, 89.4% sy,  0.0% ni,  0.3% id,  4.8% wa,  0.0% hi, 
0.1%
si>> Mem:   2075012k total,  2073404k used,     1608k free,    71056k
buffers
>> Swap:  4192924k total,  4192924k used,        0k free,    36380k cached
>> 
>> PID    USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+    
COMMAND
>> 60     root      17   0     0    0    0 D 75.4  0.0   585:22.79 
kswapd0
>> 2164   root      15   0  1736  484  432 S 31.0  0.0   31:57.07
couriertcpd>> 16334  vpopmail  19   0  2660  804  668 R 24.7  0.0   0:01.69    imapd
>> 2158   root      15   0  3264  488  432 S 23.4  0.0   1:17.51
couriertcpd>> 32608  apache    16   0 21604 8440 3016 R 15.5  0.4   1:38.09    httpd
>> 15284  vpopmail  18   0  4384 1032  760 R 14.9  0.0   0:08.32
vdelivermail>> 
>> 
>> 
>> I really do not know what thing should i do for solve this problem
>> 
>> thanks in advance
>> 
>> Mario
>
>I think this bug is your problem:
>
>https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150971
>
>You can try the kernel at:
>
>http://people.redhat.com/davej/kernels/RHEL4/RPMS.kernel/
>
>(or I can give you version 2.6.9-6.37.EL that is in 4Update1 beta)
Hi Mr. Hughes

The kernel version 2.6.9-6.37.EL has known issues

Regards
Mario

Ash Christopher

2005-May-13 19:35 UTC

head link

[CentOS] centos + kswapd0 error

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Johnny Hughes
Sent: Friday, May 13, 2005 1:04 PM
To: CentOS ML
Subject: RE: [CentOS] centos + kswapd0 error

On Fri, 2005-05-13 at 12:45 -0600, mbeltran at americatel.com.sv
wrote:> >> Hi all
> >> 
> >> I have a box with Centos 4 and qmail with all pathches. since Last
month> i
> >> have had twice the same problem. The process kswapd0 uses all my
> resources
> >> of CPU and RAM memory and the consequence is that my local queue
grow up> and
> >> the box go slow too.
> >> 
> >> The first time i guess the problem was the version of the kernel,
so i> did
> >> an upgrade form kernel.i686 2.6.9-5.0.3.EL to kernel.i686
2.6.9-5.0.5.EL> >> 
> >> apparently the problem was solved but today the problem came
again.
The> >> following snapshot shows the situation:
> >> 
> >> 
> >> top - 10:53:48 up 16 days, 20:05,  1 user,  load average: 119.27,
116.16,> >> 114.33
> >> Tasks: 528 total,  13 running, 515 sleeping,   0 stopped,   0
zombie> >> Cpu(s):  5.4% us, 89.4% sy,  0.0% ni,  0.3% id,  4.8% wa,  0.0%
hi,
0.1%> si
> >> Mem:   2075012k total,  2073404k used,     1608k free,    71056k
buffers> >> Swap:  4192924k total,  4192924k used,        0k free,    36380k
cached> >> 
> >> PID    USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+
COMMAND> >> 60     root      17   0     0    0    0 D 75.4  0.0   585:22.79
kswapd0> >> 2164   root      15   0  1736  484  432 S 31.0  0.0   31:57.07
> couriertcpd
> >> 16334  vpopmail  19   0  2660  804  668 R 24.7  0.0   0:01.69
imapd> >> 2158   root      15   0  3264  488  432 S 23.4  0.0   1:17.51
> couriertcpd
> >> 32608  apache    16   0 21604 8440 3016 R 15.5  0.4   1:38.09
httpd> >> 15284  vpopmail  18   0  4384 1032  760 R 14.9  0.0   0:08.32
> vdelivermail
> >> 
> >> 
> >> 
> >> I really do not know what thing should i do for solve this problem
> >> 
> >> thanks in advance
> >> 
> >> Mario
> >
> >I think this bug is your problem:
> >
> >https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150971
> >
> >You can try the kernel at:
> >
> >http://people.redhat.com/davej/kernels/RHEL4/RPMS.kernel/
> >
> >(or I can give you version 2.6.9-6.37.EL that is in 4Update1 beta)
> 
> Hi Mr. Hughes
> 
> The kernel version 2.6.9-6.37.EL has known issues
>That is the only other one I have for EL4 (other than the released
>kernels).
>Maybe the 2.6.9-10.EL then ... but that is pretty new ... he just made
>it yesterday :)

Does anyone know if the following is related to the kswapd0 error
outlined above? I have had my server freeze twice (under moderate load)
and give the same error in my /var/log/messages. Or, if it is not
related, does anyone have any ideas what might be causing my server to
freeze (hard reboot needed to bring it back up).

May 13 01:54:04 galactica kernel: Unable to handle kernel paging request
at virtual address 00400000
May 13 01:54:04 galactica kernel:  printing eip:
May 13 01:54:04 galactica kernel: c013bb4b
May 13 01:54:04 galactica kernel: *pde = 00000000
May 13 01:54:04 galactica kernel: Oops: 0000 [#1]
May 13 01:54:04 galactica kernel: SMP
May 13 01:54:04 galactica kernel: Modules linked in: parport_pc lp
parport md5 i
pv6 autofs4 sunrpc dm_mod button battery ac uhci_hcd hw_random e100 mii
ext3 jbd
May 13 01:54:04 galactica kernel: CPU:    0
May 13 01:54:04 galactica kernel: EIP:    0060:[<c013bb4b>]    Not
tainted VLI
May 13 01:54:04 galactica kernel: EFLAGS: 00010097   (2.6.9-5.0.5.ELsmp)
May 13 01:54:04 galactica kernel: EIP is at find_get_pages+0x30/0x50
May 13 01:54:04 galactica kernel: eax: 2002002c   ebx: 00000004   ecx:
00000003   edx: 00400000
May 13 01:54:04 galactica kernel: esi: 0000000e   edi: dedce638   ebp:
c163ae94   esp: c163ae5c
May 13 01:54:04 galactica kernel: ds: 007b   es: 007b   ss: 0068
May 13 01:54:04 galactica kernel: Process kswapd0 (pid: 31,
threadinfo=c163a000 task=c1665670)
May 13 01:54:04 galactica kernel: Stack: 00000000 c163ae8c 000000b4
00000000 c0143e10 c163ae94 dedce588 00000000
May 13 01:54:04 galactica kernel:        c014423a 0000000e ffffffff
dedce638 00000000 00000000 c1219e60 c13b8b80
May 13 02:13:47 galactica syslogd 1.4.1: restart.

mbeltran at americatel.com.sv

2005-May-13 19:50 UTC

head link

[CentOS] centos + kswapd0 error

-----Mensaje original-----
De: centos-bounces at centos.org [mailto:centos-bounces at centos.org]En
nombre de Ash Christopher
Enviado el: Friday, May 13, 2005 1:35 PM
Para: CentOS mailing list
Asunto: RE: [CentOS] centos + kswapd0 error




-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Johnny Hughes
Sent: Friday, May 13, 2005 1:04 PM
To: CentOS ML
Subject: RE: [CentOS] centos + kswapd0 error

On Fri, 2005-05-13 at 12:45 -0600, mbeltran at americatel.com.sv
wrote:> >> Hi all
> >> 
> >> I have a box with Centos 4 and qmail with all pathches. since Last
month> i
> >> have had twice the same problem. The process kswapd0 uses all my
> resources
> >> of CPU and RAM memory and the consequence is that my local queue
grow up> and
> >> the box go slow too.
> >> 
> >> The first time i guess the problem was the version of the kernel,
so i> did
> >> an upgrade form kernel.i686 2.6.9-5.0.3.EL to kernel.i686
2.6.9-5.0.5.EL> >> 
> >> apparently the problem was solved but today the problem came
again.
The> >> following snapshot shows the situation:
> >> 
> >> 
> >> top - 10:53:48 up 16 days, 20:05,  1 user,  load average: 119.27,
116.16,> >> 114.33
> >> Tasks: 528 total,  13 running, 515 sleeping,   0 stopped,   0
zombie> >> Cpu(s):  5.4% us, 89.4% sy,  0.0% ni,  0.3% id,  4.8% wa,  0.0%
hi,
0.1%> si
> >> Mem:   2075012k total,  2073404k used,     1608k free,    71056k
buffers> >> Swap:  4192924k total,  4192924k used,        0k free,    36380k
cached> >> 
> >> PID    USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+
COMMAND> >> 60     root      17   0     0    0    0 D 75.4  0.0   585:22.79
kswapd0> >> 2164   root      15   0  1736  484  432 S 31.0  0.0   31:57.07
> couriertcpd
> >> 16334  vpopmail  19   0  2660  804  668 R 24.7  0.0   0:01.69
imapd> >> 2158   root      15   0  3264  488  432 S 23.4  0.0   1:17.51
> couriertcpd
> >> 32608  apache    16   0 21604 8440 3016 R 15.5  0.4   1:38.09
httpd> >> 15284  vpopmail  18   0  4384 1032  760 R 14.9  0.0   0:08.32
> vdelivermail
> >> 
> >> 
> >> 
> >> I really do not know what thing should i do for solve this problem
> >> 
> >> thanks in advance
> >> 
> >> Mario
> >
> >I think this bug is your problem:
> >
> >https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=150971
> >
> >You can try the kernel at:
> >
> >http://people.redhat.com/davej/kernels/RHEL4/RPMS.kernel/
> >
> >(or I can give you version 2.6.9-6.37.EL that is in 4Update1 beta)
> 
> Hi Mr. Hughes
> 
> The kernel version 2.6.9-6.37.EL has known issues
>That is the only other one I have for EL4 (other than the released
>kernels).
>Maybe the 2.6.9-10.EL then ... but that is pretty new ... he just made
>it yesterday :)
Hi again Mr Hughes

So sorry but i forgot the question mark :S

I really want to know if this kernel has known issues (The kernel version
2.6.9-6.37.EL has known issues?)

regards
Mario

mbeltran at americatel.com.sv

2005-May-13 20:28 UTC

head link

[CentOS] centos + kswapd0 error

Hello Mr. Hughes

When i try to upgrade my kernel with yum check-update, yum does not display
the version of the kernel that you recomend.

Do you know the link where i can get it?

Best regards.

Mario

-----Mensaje original-----
De: centos-bounces at centos.org [mailto:centos-bounces at centos.org]En
nombre de Johnny Hughes
Enviado el: Friday, May 13, 2005 12:19 PM
Para: CentOS ML
Asunto: Re: [CentOS] centos + kswapd0 error


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