Hi Chaps, rpm -qa | grep -i pae gave kernel-PAE-2.6.18-53.el5 & ls -d /boot/vm* gave vmlinuz-2.6.18-53.el5 vmlinuz-2.6.18-53.el5PAE & /etc/grub.conf has both the above. So can I say the best thing to do now is : comment out in grub.conf the non-Pae entry so that by default it boots up from the PAE kernel & nobody would accidentally boots up from the non-PAE Also, is there any impact to Oracle & web applications if I boot up from the PAE kernel? Any precautions? Thanks On Wed, Dec 23, 2009 at 7:39 PM, Ramakrishnan Seshadhri < ramakrishnan42@xxxxxxxxx> wrote: > Hi Sunhux, > > As I told you earlier you need to install PAE kernel so that Linux shows > the > correct memory. > > Install these packages > > kernel-PAE-2.6.18-128.1.14.el5 > kernel-PAE-2.6.18-164.el5 > kernel-PAE-2.6.18-128.1.1.el5 > > They are present in the Linux DVD under "<DVD DRIVE>\server" directory. > > Once you install this follow the below steps > > 1. Install the RPM > 2. Reboot the system > 3. during the boot loaded screen press arrow keys > 4. Here you will find 2 options, one with the normal Kernel and one with > PAE > 5. Choose the PAE kernel version and press enter. > 6. Now your system should load the PAE kernel and the memory shows up. > 7. Use "free" command to check the physical memory. > > Hope this helps. Once your memory is showing correctly go to grub.conf to > set the PAE kernel as the default option to boot your system. If you dont > do > that everytime you reboot it will take the normal kernel and your phy. > memory will not show up again. > > Regards, > Ram > > > On 12/23/09, ESGLinux <esggrupos@xxxxxxxxx> wrote: > > > > Hi, > > > > just one thing, in my servers with 32 bits I need to install de kernel > PAE > > as they have said you: > > > > uname -a > > Linux server 2.6.18-164.el5PAE #1 SMP Tue Aug 18 15:59:11 EDT 2009 i686 > > i686 > > i386 GNU/Linux > > > > rpm -qa | grep -i pae > > kernel-PAE-2.6.18-128.1.14.el5 > > kernel-PAE-2.6.18-164.el5 > > kernel-PAE-2.6.18-128.1.1.el5 > > > > I think you need this kind of kernel, I don´t know why other servers show > > you the memory correctly > > > > Greetings > > > > ESG > > > > 2009/12/23 sunhux G <sunhux@xxxxxxxxx> > > > > > For other RHEL servers that shows the RAM amt correctly, > > > "uname -a" & "dmesg" show the following : > > > > > > # uname -a > > > Linux SvrWith_8GBRam 2.6.9-67.0.7.ELsmp #1 SMP Wed Feb 27 04:48:20 EST > > 2008 > > > i686 i686 i386 GNU/Linux > > > > > > # dmesg | grep -i mem > > > 8320MB HIGHMEM available. > > > > > > > > > For the "weird" server, the uname, dmesg & top are as follows : > > > (I'll collect "dmidecode | grep -e Memory\ Device$ -A5" tomorrow) > > > > > > # uname -a > > > Linux SvrWith_3GbRam 2.6.18-53.el5 #1 SMP Wed Oct 10 16:34:02 EDT 2007 > > i686 > > > i686 i386 GNU/Linux > > > > > > # dmesg | grep -i mem > > > 3200MB HIGHMEM available. > > > 896MB LOWMEM available. > > > Memory for crash kernel (0x0 to 0x0) notwithin permissible range > > > HighMem zone: 819200 pages, LIFO batch:31 > > > Memory: 3365612k/4194304k available (2080k kernel code, 40228k > reserved, > > > 869k data, 220k init, 2489644k highmem) > > > Freeing initrd memory: 2468k freed > > > MEM window: f2000000-f5ffffff > > > MEM window: f6000000-f60fffff > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > MEM window: disabled. <== anything wrong with this? > > > highmem bounce pool size: 64 pages > > > > > > > > > top - 00:18:20 up 3 days, 12:32, 2 users, load average: 0.14, 0.07, > > 0.02 > > > Tasks: 155 total, 1 running, 154 sleeping, 0 stopped, 0 zombie > > > Cpu(s): 0.0%us, 0.2%sy, 0.0%ni, 99.8%id, 0.0%wa, 0.0%hi, 0.0%si, > > > 0.0%st > > > Mem: 3369208k total, 3284572k used, 84636k free, 185648k > buffers > > > Swap: 8193108k total, 200k used, 8192908k free, 2756496k cached > > > > > > > > > # more /proc/meminfo > > > MemTotal: 3369208 kB > > > MemFree: 84760 kB > > > Buffers: 185668 kB > > > Cached: 2756484 kB > > > SwapCached: 0 kB > > > Active: 508672 kB > > > Inactive: 2635140 kB > > > HighTotal: 2489644 kB > > > HighFree: 12244 kB > > > LowTotal: 879564 kB > > > LowFree: 72516 kB > > > SwapTotal: 8193108 kB > > > SwapFree: 8192908 kB > > > > > > > > > On Wed, Dec 23, 2009 at 8:35 AM, Ramakrishnan Seshadhri < > > > ramakrishnan42@xxxxxxxxx> wrote: > > > > > > > Hi, > > > > > > > > What is your Linux Kernel Version. Is it a PAE kernel (Physical > Address > > > > xtension) > > > > > > > > Provide the output of # uname -a. > > > > > > > > If your kernel is not a PAE kernel it wont detect your physical > memory > > > more > > > > than 3072 MB. > > > > > > > > Hope it helps your situation. > > > > > > > > Ram > > > > > > > > On Tue, Dec 22, 2009 at 10:32 PM, Eugene Vilensky < > evilensky@xxxxxxxxx > > > > >wrote: > > > > > > > > > >> why is "top" or "dmesg" showing only 3GB RAM > > > > > >> instead of 4GB if 4GB is the max the 32 bit RHEL > > > > > >> can support? > > > > > >> > > > > > >> Supposedly there's 16GB physical RAM inserted > > > > > >> in the hardware > > > > > > > > > > Could you copy/paste your exact top output as well as the output of > > > > > "dmidecode | grep -e Memory\ Device$ -A5" > > > > > > > > > > -- > > > > > redhat-list mailing list > > > > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx > > ?subject=unsubscribe > > > > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > > > > -- > > > > redhat-list mailing list > > > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx > ?subject=unsubscribe > > > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > > -- > > > redhat-list mailing list > > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
