Re: [Fedora-xen] rc3 kernel and xen
On 02/02/2011 11:02 PM, Digimer wrote: First blush (no domUs yet) - dom0 boots with 2GB RAM - dom0 boots with encrypted root partition. - CPU frequency scaling /doesn't/ work (Intel Core2Duo P9400) - There seems to be a UI lag somewhere. Windows and key-presses seem to occasionally stall (1 sec at worst). Not serious, and possibly my imagination. All in all, this is the first 2.6.37+ dom0 that even booted using the xen hypervisor. That makes it, for me, a huge improvement. :D I'll try provisioning a couple domUs for further testing. Thanks for the hard work, it really is appreciated! Another note; When I tried to sleep the machine, it hung. Screen went dark and the power button pulsed. I had to hard-reset the machine. :) -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] rc3 kernel and xen
On 02/03/2011 08:28 AM, Digimer wrote: On 02/02/2011 11:02 PM, Digimer wrote: First blush (no domUs yet) - dom0 boots with 2GB RAM - dom0 boots with encrypted root partition. - CPU frequency scaling /doesn't/ work (Intel Core2Duo P9400) - There seems to be a UI lag somewhere. Windows and key-presses seem to occasionally stall (1 sec at worst). Not serious, and possibly my imagination. All in all, this is the first 2.6.37+ dom0 that even booted using the xen hypervisor. That makes it, for me, a huge improvement. :D I'll try provisioning a couple domUs for further testing. Thanks for the hard work, it really is appreciated! Another note; When I tried to sleep the machine, it hung. Screen went dark and the power button pulsed. I had to hard-reset the machine. :) Yet another; Normal power-off hung as well. Had to cold-boot the laptop. In case it matters, it's a Thinkpad T400s. note: taken under the plain kernel, not while booting via xen. lspci: http://pastebin.com/D5QJpb2b dmidecode: http://pastebin.com/mRMhragn cpuinfo: http://pastebin.com/P1hS8AYa uname: Linux lework.alteeve.com 2.6.38-0.rc3.git0.1.xendom0.fc15.x86_64 #1 SMP Tue Feb 1 23:35:33 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] rc3 kernel and xen
On 02/03/2011 10:04 AM, M A Young wrote: On Thu, 3 Feb 2011, Digimer wrote: On 02/03/2011 08:28 AM, Digimer wrote: On 02/02/2011 11:02 PM, Digimer wrote: Another note; When I tried to sleep the machine, it hung. Screen went dark and the power button pulsed. I had to hard-reset the machine. :) Yet another; Normal power-off hung as well. Had to cold-boot the laptop. In case it matters, it's a Thinkpad T400s. note: taken under the plain kernel, not while booting via xen. lspci: http://pastebin.com/D5QJpb2b dmidecode: http://pastebin.com/mRMhragn cpuinfo: http://pastebin.com/P1hS8AYa uname: Linux lework.alteeve.com 2.6.38-0.rc3.git0.1.xendom0.fc15.x86_64 #1 SMP Tue Feb 1 23:35:33 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Try with kernel-2.6.38-0.rc3.git0.1.fc15 at http://koji.fedoraproject.org/koji/buildinfo?buildID=216558 (the latest regular rawhide kernel, though a later was is currently being built). If that shows the same behaviour you can probably file a bug somewhere (eg. http://bugzilla.redhat.com/ ) because it will be a Fedora or mainline kernel issue. Michael Young Will do, and will report. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] rc3 kernel and xen
On 02/03/2011 10:04 AM, M A Young wrote: On Thu, 3 Feb 2011, Digimer wrote: On 02/03/2011 08:28 AM, Digimer wrote: On 02/02/2011 11:02 PM, Digimer wrote: Another note; When I tried to sleep the machine, it hung. Screen went dark and the power button pulsed. I had to hard-reset the machine. :) Yet another; Normal power-off hung as well. Had to cold-boot the laptop. In case it matters, it's a Thinkpad T400s. note: taken under the plain kernel, not while booting via xen. lspci: http://pastebin.com/D5QJpb2b dmidecode: http://pastebin.com/mRMhragn cpuinfo: http://pastebin.com/P1hS8AYa uname: Linux lework.alteeve.com 2.6.38-0.rc3.git0.1.xendom0.fc15.x86_64 #1 SMP Tue Feb 1 23:35:33 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Try with kernel-2.6.38-0.rc3.git0.1.fc15 at http://koji.fedoraproject.org/koji/buildinfo?buildID=216558 (the latest regular rawhide kernel, though a later was is currently being built). If that shows the same behaviour you can probably file a bug somewhere (eg. http://bugzilla.redhat.com/ ) because it will be a Fedora or mainline kernel issue. Michael Young I should mention; running the same kernel without the Xen microkernel works fine. I can suspend, power off and I don't experience the jitters. I'll still install this though, to be certain. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] rc3 kernel and xen
On 02/03/2011 10:10 AM, Digimer wrote: Try with kernel-2.6.38-0.rc3.git0.1.fc15 at http://koji.fedoraproject.org/koji/buildinfo?buildID=216558 (the latest regular rawhide kernel, though a later was is currently being built). If that shows the same behaviour you can probably file a bug somewhere (eg. http://bugzilla.redhat.com/ ) because it will be a Fedora or mainline kernel issue. Michael Young Will do, and will report. Booted the stock kernel above, and it slept and powered off cleanly, no jitters and cpu frequency scaling worked. Same with your xen'ified kernel when /not/ running through kernel=xen.gz. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] rc3 kernel and xen
On 02/02/2011 05:43 PM, M A Young wrote: I have builds of a new dom0 kernel (2.6.38-0.rc3.git0.1.xendom0.fc15) at http://koji.fedoraproject.org/koji/taskinfo?taskID=2755802 and xen (4.1.0-0.1.rc3.fc14) at http://koji.fedoraproject.org/koji/taskinfo?taskID=2753907 You may need one or both of the following hacks Edit /etc/init.d/xenstored replacing the line XENSTORED_PID=/var/run/xenstore.pid with XENSTORED_PID=/var/run/xenstored.pid (I didn't notice they had changed the name of this file until after I tested the xen packages) Edit /etc/sysconfig/modules/xen.modules to remove xen-netback from the list of modules in the for loop then add modprobe xen-netback netback_kthread=1 to the end of the file. The xen-netback module in xen/next-2.6.38 when I built the kernel still needed some work and setting this value makes it less likely to throw up backtraces if you try to use it. Michael Young First blush (no domUs yet) - dom0 boots with 2GB RAM - dom0 boots with encrypted root partition. - CPU frequency scaling /doesn't/ work (Intel Core2Duo P9400) - There seems to be a UI lag somewhere. Windows and key-presses seem to occasionally stall (1 sec at worst). Not serious, and possibly my imagination. All in all, this is the first 2.6.37+ dom0 that even booted using the xen hypervisor. That makes it, for me, a huge improvement. :D I'll try provisioning a couple domUs for further testing. Thanks for the hard work, it really is appreciated! -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
[Fedora-xen] kernel-2.6.37-2.xendom0.fc15 and encrypted / partition
Hi Michael, I didn't save the original thread when you posted this, so my apologies for breaking threading. :) I just tried this kernel on Fedora 14 x86_64 and, like several of the previous attempts, it simply reboots after xen.gz finishes booting (at least, this is what I can guess, as the screen is black). This is despite hearing other report much better success. So I was wondering if these kernels have been tested against dom0 with an encrypted ext4 root partition? I'm going to try the 4.0.2-rc1 xen hypervisor shortly. In the meantime, is there anything I can do to help narrow down the potential source of the problem? Thanks for the continued hard work. :) -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] 2.6.37-rc3 dom0 kernel
On 11/22/2010 07:28 PM, M A Young wrote: Here is an rc3 kernel (2.6.37-0.rc3.git0.1.xendom0.fc15) at http://koji.fedoraproject.org/koji/taskinfo?taskID=2617730 It updates to the latest next-2.6.37 patch. I haven't tested it yet. Michael Young I compiled and installed this and your latest 2.6.32 (174) kernel today. In both cases, on boot at the point where it should scrub the RAM, my system reboots. My '/' partition is encrypted (ext4), perhaps this is the cause? If not, what could I do to help trace the problem? Thanks! -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
[Fedora-xen] Compiling myoung's f12 dom0 on RHEL6
I hope this isn't too off-topic. :) I'm trying to recompile Michael Young's F12 dom0 kernel[1] on RHEL 6. I've run into a small issue that I could probably push through, but I wanted to ask for opinions here. The source RPM depends on 'asciidoc', which isn't in the main Red Hat repository (at least, not that I could find). I was wondering what, exactly, needs asciidoc and if it would be safe/easy/possible/advisable to remove that dependency. Thanks! 1. http://fedorapeople.org/~myoung/dom0/src/kernel-2.6.32.25-172.xendom0.fc12.src.rpm -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] Compiling myoung's f12 dom0 on RHEL6
On 11/17/2010 03:06 PM, M A Young wrote: On Wed, 17 Nov 2010, Digimer wrote: The source RPM depends on 'asciidoc', which isn't in the main Red Hat repository (at least, not that I could find). I was wondering what, exactly, needs asciidoc and if it would be safe/easy/possible/advisable to remove that dependency. It seems to be used in the perf Documentation. It is probably safe to remove, or you could get it from the EPEL repository (it is in EPEL5, I can't see it in EPEL6 yet). Michael Young After sending that, I installed asciidoc from source and removed the requirement from the spec and it seemed to go well. I plan to install and test it tonight. I'll try another build with no asciidoc at all and see how it goes, too. Thanks for the reply. :) -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] Compiling myoung's f12 dom0 on RHEL6
On 11/17/2010 03:27 PM, M A Young wrote: On Wed, 17 Nov 2010, Digimer wrote: On 11/17/2010 03:06 PM, M A Young wrote: On Wed, 17 Nov 2010, Digimer wrote: The source RPM depends on 'asciidoc', which isn't in the main Red Hat repository (at least, not that I could find). I was wondering what, exactly, needs asciidoc and if it would be safe/easy/possible/advisable to remove that dependency. It seems to be used in the perf Documentation. It is probably safe to remove, or you could get it from the EPEL repository (it is in EPEL5, I can't see it in EPEL6 yet). Michael Young A bit of a tangent, if I may. I just tried to install the recompiled kernel and it's complaining that it depends on 'kernel-firmware', which wasn't built. Was something extra needed at build time to have it created? Rebuild with --target=noarch Michael Young Running now, thanks for the help. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
Re: [Fedora-xen] [fedora-virt] Dom0 xen support in Fedora 15?
On 10-11-12 09:57 AM, Todd Deshane wrote: I'd be happy to run some benchmarks. I've got some identical (if humble) machines... Would you want just a Xen vs. KVM? If so, what parameters or setup options would provide the best apples to apples comparison? The machines are; - quad core athlon II x4 - 4gb ddr3 - 1x 7200rom 500GB drive - Fedora 14, stripped (but identical) installs If these are too low end for useful results, let me know. Otherwise, I'll fire up Xen under Michael's 2.6.32-25-172 kernel with the stock 4.0.1 hypervisor on one machine, and can use the stock KVM/QEMU setup for another. Assuming all is fine, would it matter whether the VMs were F14 vs CentOS 5.5? I was thinking 3x runs each of; - bonnie++ - Recompile Michael's kernel - ?? Please make suggestions There is also an ongoing discussion about Xen vs. KVM performance on the CentOS virt list http://lists.centos.org/pipermail/centos-virt/2010-October/002074.html One thing I can say already, I've been unable to get Fedora 14 to start as a KVM VM with more than one CPU. I'm having to rework my test bed to use RHEL 6.0 now that it's out and hope that it solves the problem. :) -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
[Fedora-xen] Benchmark comparison of Xen vs. KVM - advice?
On 10-11-09 12:54 PM, j...@destar.net wrote: Digimer, I would think the latest xen vs the latest kvm would be best. Fully virtualized vs Para-virtualized, is that possible with kvm? I don't believe your specs are too low end, they actually match pretty close to what I have and I don't think the OS matters that much as long as they are identical setups. Thanks for offering to do the comparison, I am very interested in your results. Jon I will look into whether fully virtualized is an option for KVM. If not, I probably won't worry as all modern operating systems support paravirtualized setups. I've got no way of knowing how to run tests on non-linux VMs. If anyone can give advice on benchmarking non-Linux OS', I'd be grateful and will give it a go. Can you (or anyone) suggests tests to run beyond bonnie++ and a kernel compile that would be real-world and useful benchmarks? I think one test that will help would be to run tests concurrently on two VMs to see if there is a difference in how Xen or KVM handle very random disk I/O. PS - I will likely need a week or so to get these tests done. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org -- xen mailing list xen@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/xen
