-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@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@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.
-
Ash Christopher