I am considering updating xen to 3.3.1 from 3.0.3 because recently dom0 memory squeezing problem occurred. I know that the latest version of xen is 3.4.0 but I am wondering if xen 3.4.0 is more stable than 3.3.1. Most domUs are used as web server and we believe that stability is much more important than performance for our service. I understand that it is difficult to say which one is more stable since 3.4.0 just came out but I would like to hear any opinions from users who have been used both 3.3.1 and 3.4.0. Please help me to decide which one I should install. Thank you so much in advance. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
=?ks_c_5601-1987?B?wMy1v7HU?= <dongq.lee@nhn.com> writes:> I am considering updating xen to 3.3.1 from 3.0.3 because recently dom0 memory squeezing problem occurred.don''t let me discourage you from upgrading, 3.3 (and 3.4) is much better than 3.0.3. However the dom0 memory squeeze problem can usually be solved by setting dom0_mem in the /boot/grub/menu.lst of the dom0 on the xen.gz line to the ram you want to dedicate to the Dom0 (somewhere between 512M and 1024M) then be sure to set dom0-min-mem (in /etc/xen/xend-config.sxp) to the same value (you can also set dom0-min-mem to 0 in older versions of xen and in newer versions of xen there is a enable-dom0-baloon value you can set) either way, once you stop balloning, (something that in a dedicated xen server environment I think is a bad idea anyhow, much like this ''memory overcommit'' people are on about lately) lots of your stability problems will go away. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Fajar A. Nugraha
2009-May-28 07:27 UTC
Re: [Xen-users] Is xen3.4.0 more stable than 3.3.1?
2009/5/28 이동규 <dongq.lee@nhn.com>:> I am considering updating xen to 3.3.1 from 3.0.3 because recently dom0 > memory squeezing problem occurred.If by "3.0.3" you mean RPM packages from RHEL/Centos, the real version is actually 3.1.2 + lots of backports. Don''t let the RPM number fool you :)> > I know that the latest version of xen is 3.4.0 but I am wondering if xen > 3.4.0 is more stable than 3.3.1.I''ve been using both RH''s Xen and 3.3.1, and they''re both stable. Note Luke''s suggestion, and you might also want to look at this: http://lists.xensource.com/archives/cgi-bin/mesg.cgi?a=xen-users&i=7207d96f0903250937m5567070bw759f3def3da04e89%40mail.gmail.com I''ve also started using Xen 3.4 (same settings) on another server, no problems so far. If you use RHEL/Centos it''s easier to use packages from http://www.gitco.de/repo/. For most purposes they would work fine with RHEL''s -xen kernel. The exception is if you use some new features that needs dom0 kernel support (like scsi passthru), but (from your usage description) you won''t need it. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users