Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum -y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what's wrong with my server. Do I have to install another kernel? Can you help me?
More details of my server:
[root@netreporter-test ~]# uname -a
Linux netreporter-test 2.6.18-53.el5PAE #1 SMP Mon Nov 12 02:55:09 EST 2007 i686 i686 i386 GNU/Linux
[root@netreporter-test ~]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
stepping : 11
cpu MHz : 2331.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm
bogomips : 4667.95
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz
stepping : 11
cpu MHz : 2331.000
cache size : 4096 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc pni monitor ds_cpl vmx smx est tm2 cx16 xtpr lahf_lm
bogomips : 4665.47
[root@netreporter-test ~]# cat /proc/meminfo
MemTotal: 4072176 kB
MemFree: 3871428 kB
Buffers: 14224 kB
Cached: 145872 kB
Thanks in advance
Israel.
On 8/7/08, israel.garcia@cimex.com.cu israel.garcia@cimex.com.cu wrote:
Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum –y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what's wrong with my server. Do I have to install another kernel? Can you help me?
Does disabling Hyperthreading (at BIOS setup control program) help?
Eduardo Grosclaude wrote:
On 8/7/08, israel.garcia@cimex.com.cu israel.garcia@cimex.com.cu wrote:
Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum –y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what's wrong with my server. Do I have to install another kernel? Can you help me?
Does disabling Hyperthreading (at BIOS setup control program) help?
there is no hyperthreading on core2duo cpus, they are true dual core.
israel.garcia@cimex.com.cu wrote:
Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum -y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what's wrong with my server. Do I have to install another kernel? Can you help me?
With 4G I'd install the x86_64 version. Not that I think that PAE is the reason for this slow behaviour (last reporter who had that somewhere on bugs.centos.org had bad RAM), but ...
Cheers,
Ralph
Ralph Angenendt wrote:
israel.garcia@cimex.com.cu wrote:
Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum -y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what's wrong with my server. Do I have to install another kernel? Can you help me?
With 4G I'd install the x86_64 version. Not that I think that PAE is the reason for this slow behaviour (last reporter who had that somewhere on bugs.centos.org had bad RAM), but ...
Cheers,
Ralph
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
I don't think PAE would be causing his issue...I have a similar system with 8GB of RAM and I got better performance w/ PAE than I did with x86_64, but YMMV depending on usage of the system...
Israel, have you tried running memtest86 just to rule out a memory error? Also, when you installed, did you let the installer check your media?
israel.garcia@cimex.com.cu wrote:
Hi, I’ve installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon. Once the system is UP, every command I run gets 100% CPU and every is very slowly at the point yum –y update never ends. The system installed by default this kernel 2.6.18-53.el5PAE. I would like to know what’s wrong with my server. Do I have to install another kernel? Can you help me?
More details of my server:
additional useful info might be ...
# dmesg # lspci #vmstat 5 5 # iostat -x 5 5
the last 2 will take about 30 seconds each to run (oh, iostat is part of package `sysstat` which may not be installed by default, `yum install sysstat`)
and if the dmesg output doesn't start with Linux version 2.6.18-92.1.6.el5 (mockbuild@builder16.centos.org) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-42)) #1 SMP Wed Jun 25 1 3:49:24 EDT 2008
(or similar) that means the dmesg buffer likely overflowed, so cat /var/log/dmesg to get the snapshot output of it right after the system booted
israel.garcia@cimex.com.cu wrote:
Hi, I've installed CentOS5.2 on an INTEL Core 2 Duo (Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz), 4 GB RAM (MemTotal: 4072176 kB) and my system gets sevarel minutes to startup, specially on udev daemon.
If your disk controllers aren't properly recognized, it might help booting with
hda=noprobe hdc=noprobe
You can test this by running "hdparm -t -T" on your disk with and without these boot options.
This has helped me on some systems.
Mogens
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Eduardo Grosclaude -
israel.garcia＠cimex.com.cu -
Jayson Rowe -
John R Pierce -
Mogens Kjaer -
qsm -
Ralph Angenendt