----- "Dustin Henning" <Dustin.Henning@xxxxxxxxxxx> wrote: > I have a Core 2 Quad with 8 GiB of RAM. When I installed FC7 > (2.6.22.9-91.fc7), it only detected 4GiB (BIOS detects 8GiB). I > added > mem=8G to the kernel line in grub.conf, and then Gnome System Monitor > showed > 7.1GiB (vs I think 4.0). I then changed that to mem=16G, and the > Gnome > System Monitor shows 7.8 GiB. /proc/meminfo MemTotal shows 8201832kB, > so > that seems about right. That said, the problem seems to be solved for > the > kernel mentioned above. > However, and this is why I am submitting this to the fedora-xen > mailing list, the virtualization kernel (2.6.20-2936.fc7xen) shows > 3.1GiB in > Gnome System Monitor and 3214456KB in /proc/meminfo MemTotal. > Additionally, > "xm info" shows 3327 for total memory, so the problem isn't that it is > there > but not assigned to dom0. I tried the same thing with grub.conf for > xen, > but it did not work, mem=8G and mem=16G had no effect (this is shown > to be a > valid parameter in the Xen manual at > [http://tx.downloads.xensource.com/downloads/docs/user/#SECTION0413000000000 > 0000000]). Since it didn't work on the kernel line, I tried it on > the > module (vmlinuz) line that has the other FC grub arguments, and that > did not > work either; then I tried placing that on both lines (also to no > avail). I > also tried dom0_mem=8G on the kernel line, and that caused a kernel > panic > stating not enough physical memory (got the same thing with > dom0_mem=4G). > Finally, as a side note, /proc/meminfo VmallocTotal shows > 34359738367kB regardless of all of the above, and I don't know if that > is > normal or not (swap partition is 2GiB). Please let me know if you > have > fedora 7 x86_64 xen working with >4GB of memory, if there is any > additional > information that might be helpful, or if you have any suggestions I > might > try in order to resolve this. Thank you, > Dustin I have 4 procs with 16G RAM and no mem paramters in grub at all, and it looks like this: Linux h 2.6.20-2931.fc7xen #1 SMP Mon Aug 13 10:11:56 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux # grep 'model name' /proc/cpuinfo model name : AMD Opteron(tm) Processor 852 model name : AMD Opteron(tm) Processor 852 model name : AMD Opteron(tm) Processor 852 model name : AMD Opteron(tm) Processor 852 # grep Total /proc/meminfo MemTotal: 13335552 kB SwapTotal: 5261240 kB VmallocTotal: 34359738367 kB # xm info |grep total total_memory : 16319 I have 3 domU's running with each allocated 1G, so 16-3=13 which I suppose explains the MemTotal line above from the perspective of dom0. On an identical server running RHEL with no xen and I see something a bit different: Red Hat Enterprise Linux AS release 4 (Nahant Update 5) Linux z 2.6.9-55.0.2.ELsmp #1 SMP Tue Jun 12 17:58:20 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux # grep Total /proc/meminfo MemTotal: 16359284 kB HighTotal: 0 kB LowTotal: 16359284 kB SwapTotal: 5261240 kB VmallocTotal: 536870911 kB HugePages_Total: 0 Not sure if that was helpful. -- Dale Bewley - Unix Administrator - Shields Library - UC Davis GPG: 0xB098A0F3 0D5A 9AEB 43F4 F84C 7EFD 1753 064D 2583 B098 A0F3 -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen
