I am running xen (changeset 9029 on SLES10 beta 6) on x86_64 with 8 procs and 8 GB memory. When the system boots, xm list and xentop show that dom0 is given almost all of the 8 GB of memory, leaving only 136 MB free. Has anyone else encountered this? Shouldn''t the default memory size be small to allow the creation of multiple domU''s? Thanks,> Sue Krysan > Linux Systems Group > Unisys Corporation > (610) 648-2494 > (Net) 385-2494 >THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> I am running xen (changeset 9029 on SLES10 beta 6) on x86_64 with 8 procs and 8 GB memory. When the system boots, xm list and xentop show that dom0 is given almost all of the 8 GB of memory, leaving only 136 MB free. > > Has anyone else encountered this? Shouldn''t the default memory size be small to allow the creation of multiple domU''s? > > Thanks, > Sue Krysan > Linux Systems Group > Unisys Corporation > (610) 648-2494 > (Net) 385-2494 > > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers._______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
You, Yongkang
2006-Mar-09 01:22 UTC
RE: [Xen-users] default dom0 memory size is very large
Hi Susan, Did you provide dom0_mem config to xen kernel? If not given, xen0 will eat almost all the memory. I often set: kernel /boot/xen.gz dom0_mem=262144 Best Regards, Yongkang (Kangkang) 永康>-----Original Message----- >From: xen-users-bounces@lists.xensource.com >[mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Krysan, Susan >Sent: 2006年3月9日 6:14 >To: xen-users@lists.xensource.com >Subject: [Xen-users] default dom0 memory size is very large > >> I am running xen (changeset 9029 on SLES10 beta 6) on x86_64 with 8 procs >and 8 GB memory. When the system boots, xm list and xentop show that dom0 >is given almost all of the 8 GB of memory, leaving only 136 MB free. >> >> Has anyone else encountered this? Shouldn''t the default memory size be >small to allow the creation of multiple domU''s? >> >> Thanks, >> Sue Krysan >> Linux Systems Group >> Unisys Corporation >> (610) 648-2494 >> (Net) 385-2494 >> >> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR >OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the >intended recipient. If you received this in error, please contact the sender and >delete the e-mail and its attachments from all computers. > > >_______________________________________________ >Xen-users mailing list >Xen-users@lists.xensource.com >http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 3/8/06, Krysan, Susan <KRYSANS@unisys.com> wrote:> > I am running xen (changeset 9029 on SLES10 beta 6) on x86_64 with 8 procs and 8 GB memory. When the system boots, xm list and xentop show that dom0 is given almost all of the 8 GB of memory, leaving only 136 MB free.The dom0 will give up memory when the domUs are started, down to the the memory limit set in the config file in /etc/xen. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
David F Barrera
2006-Mar-09 13:20 UTC
Re: [Xen-users] default dom0 memory size is very large
You need to modify /boot/grub/menu.lst (for dom0) and add ''dom0_mem=512000 '' (or whatever amount of memory you want to give dom0). Then reboot it. Krysan, Susan wrote:>I am running xen (changeset 9029 on SLES10 beta 6) on x86_64 with 8 procs and 8 GB memory. When the system boots, xm list and xentop show that dom0 is given almost all of the 8 GB of memory, leaving only 136 MB free. > >Has anyone else encountered this? Shouldn''t the default memory size be small to allow the creation of multiple domU''s? > >Thanks, > > >>Sue Krysan >>Linux Systems Group >>Unisys Corporation >>(610) 648-2494 >>(Net) 385-2494 >> >> >> >THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. > > > >_______________________________________________ >Xen-users mailing list >Xen-users@lists.xensource.com >http://lists.xensource.com/xen-users > >-- Regards, David F Barrera Linux Technology Center Systems and Technology Group, IBM "The wisest men follow their own direction. " Euripides _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Ian P. Christian
2006-Jul-17 02:46 UTC
Re: [Xen-users] default dom0 memory size is very large
David F Barrera wrote:> You need to modify /boot/grub/menu.lst (for dom0) and add > ''dom0_mem=512000 '' (or whatever amount of memory you want to give dom0). > Then reboot it.I understand that this still works - but given that you can set the mim-dom0 memory in the xen config file, is there any reason to do this? Surely it''s better to have the memory available to domO rather then have it sitting there doing nothing? Kind Regards, Ian _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users