Abba Communications
2007-May-04 04:10 UTC
[CentOS] centos 5 smp kerne vrs centos 4 smp kernel ???l
On a Compaq DL360 G1 w/ dual PIII 1.27's I installed Centos 5 minimal and then a yum update When I do a "uname -a" I get this Linux tstsrvr.abbacomm.net 2.6.18-8.1.3.el5 #1 SMP Mon Apr 30 19:55:44 EDT 2007 i686 i686 i386 GNU/Linux When I do a rpm -qa | grep kern* I get this kernel-devel-2.6.18-8.1.3.el5 kernel-2.6.18-8.1.3.el5 kernel-headers-2.6.18-8.1.3.el5 It is interesting that I did have this issue with my first Compaq DL380 load with slightly faster dual PIII's Centos 4 always found both processors automatically... hmmmmm, now... what part of my brains have done fell out my ears that I am not seeing the obvious solution on this one??? After searching for quite some time, I concluded that the info on this returned way too much noise... Thanks in advance... - rh -- Abba Communications Spokane, WA www.abbacomm.net
Abba Communications wrote:> On a Compaq DL360 G1 w/ dual PIII 1.27's I installed Centos 5 minimal and > then a yum update > > When I do a "uname -a" I get this > > Linux tstsrvr.abbacomm.net 2.6.18-8.1.3.el5 #1 SMP Mon Apr 30 19:55:44 EDT > 2007 i686 i686 i386 GNU/Linux > > When I do a rpm -qa | grep kern* I get this > > kernel-devel-2.6.18-8.1.3.el5 > kernel-2.6.18-8.1.3.el5 > kernel-headers-2.6.18-8.1.3.el5 > > It is interesting that I did have this issue with my first Compaq DL380 load > with slightly faster dual PIII's > > Centos 4 always found both processors automatically... > > hmmmmm, now... what part of my brains have done fell out my ears that I am > not seeing the obvious solution on this one??? > > After searching for quite some time, I concluded that the info on this > returned way too much noise... > > Thanks in advance... > > - rh >If you look carefully I think you will find there is NOT a CentOS/RHEL5 SMP kernel, just one does the whole deal. There is a -PAE kernel that is for more than 4 GB of RAM, but apparently there is no performance penalty with using a single kernel for both SMP an uniprocessor systems. -- Jay Leafey - Memphis, TN jay.leafey at mindless.com -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5177 bytes Desc: S/MIME Cryptographic Signature URL: <http://lists.centos.org/pipermail/centos/attachments/20070503/ffba6bc2/attachment-0001.bin>
William Warren
2007-May-04 04:31 UTC
[CentOS] centos 5 smp kerne vrs centos 4 smp kernel ???l
when you do a top and then use 1 and enter does it show both procs? Abba Communications wrote:> On a Compaq DL360 G1 w/ dual PIII 1.27's I installed Centos 5 minimal and > then a yum update > > When I do a "uname -a" I get this > > Linux tstsrvr.abbacomm.net 2.6.18-8.1.3.el5 #1 SMP Mon Apr 30 19:55:44 EDT > 2007 i686 i686 i386 GNU/Linux > > When I do a rpm -qa | grep kern* I get this > > kernel-devel-2.6.18-8.1.3.el5 > kernel-2.6.18-8.1.3.el5 > kernel-headers-2.6.18-8.1.3.el5 > > It is interesting that I did have this issue with my first Compaq DL380 load > with slightly faster dual PIII's > > Centos 4 always found both processors automatically... > > hmmmmm, now... what part of my brains have done fell out my ears that I am > not seeing the obvious solution on this one??? > > After searching for quite some time, I concluded that the info on this > returned way too much noise... > > Thanks in advance... > > - rh > > -- > Abba Communications > Spokane, WA > www.abbacomm.net > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- > Scanned with Copfilter Version 0.84beta1 (P3Scan 2.2.1) > AntiSpam: SpamAssassin 3.1.8 > AntiVirus: ClamAV 0.90.1/3204 - Thu May 3 14:46:39 2007 > by Markus Madlener @ http://www.copfilter.org >-- My "Foundation" verse: Isa 54:17 No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of me, saith the LORD. -- carpe ductum -- "Grab the tape" CDTT (Certified Duct Tape Technician) Linux user #322099 Machines: 206822 256638 276825 http://counter.li.org/
Abba Communications
2007-May-04 04:33 UTC
[CentOS] centos 5 smp kerne vrs centos 4 smp kernel ???l
> If you look carefully I think you will find there is NOT a CentOS/RHEL5 > SMP kernel, just one does the whole deal. There is a -PAE kernel that > is for more than 4 GB of RAM, but apparently there is no performance > penalty with using a single kernel for both SMP an uniprocessor systems. > > -- > Jay Leafey - Memphis, TN > jay.leafey at mindless.comThanks I was just studying that fact so to speak... Doing things like yum whatprovides kernel-smp Was coming up blank and slapping me up 'longside the head Soooooo where do I start digging now... Power on self test shows two processors yet if I [root at tstsrvr etc]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 11 model name : Intel(R) Pentium(R) III CPU family 1266MHz stepping : 1 cpu MHz : 1263.636 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr sse up bogomips : 2527.45 I just show one..... hmmmmm - rh -- Abba Communications Spokane, WA www.abbacomm.net
On 5/3/07, Abba Communications <lists06 at abbacomm.net> wrote:> > On a Compaq DL360 G1 w/ dual PIII 1.27's I installed Centos 5 minimal and > then a yum update > > When I do a "uname -a" I get this > > Linux tstsrvr.abbacomm.net 2.6.18-8.1.3.el5 #1 SMP Mon Apr 30 19:55:44 EDT > 2007 i686 i686 i386 GNU/Linux > > When I do a rpm -qa | grep kern* I get this > > kernel-devel-2.6.18-8.1.3.el5 > kernel-2.6.18-8.1.3.el5 > kernel-headers-2.6.18-8.1.3.el5 > > It is interesting that I did have this issue with my first Compaq DL380 load > with slightly faster dual PIII's > > Centos 4 always found both processors automatically... > > hmmmmm, now... what part of my brains have done fell out my ears that I am > not seeing the obvious solution on this one???I don't see anything wrong with your kernel. The kernel version matches between the uname output and the kernel rpm. Apparently CentOS 5 found both processors (SMP in uname). Because a single kernel takes care of both smp and non-smp in CentOS 5, you cannot tell by the kernel package name, but if in doubt, do a 'cat /proc/cpuinfo'. Akemi