http://bugzilla.novell.com/show_bug.cgi?id=583867 http://bugzilla.novell.com/show_bug.cgi?id=583867#c0 Summary: Soft lockups on domU with high CPU load om dom0 Classification: openSUSE Product: openSUSE 11.2 Version: Final Platform: x86-64 OS/Version: openSUSE 11.2 Status: NEW Severity: Major Priority: P5 - None Component: Xen AssignedTo: jdouglas@novell.com ReportedBy: erik@brakkee.org QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100206 SUSE/2.0.3-0.1.1 SeaMonkey/2.0.3 If I run an opensuse 11.2 xen kernel as dom0 and create an opensuse 11.2 guest (in my case a 32 bit guest), then putting a high load on dom0 results in messages about 'soft lockups' and 'CPU#0 stuck' in the domU. Reproducible: Always Steps to Reproduce: 1. Install 64 bit opensuse 11.2 2. Create HVM guest with 32 bit opensuse 11.2 3. start the guest using xm start and open a console to it 4. Compile a kernel in dom0 with 'make -j 8' to generate some load. Actual Results: DomU freezes as soon as the kernel compilation is under way. Dom0 itself remains responsive. Messages about soft lockups and CPU#<n> stuck start appearing. Expected Results: DomU should have been responsive, albeit a bit slower, but not completely unresponsive.. Using stock kernel 2.6.31.12-0.1-xen (dom0) and 2.6.31.12-0.1-desktop (domU). Hardware Core i7 720QM, 8gb memory, 500GB hard disk. Sony Vaio F11 laptop. Problem appears with both credit scheduler and sedf scheduler. Xen boot option noapic does not help. Manipulating caps and weights with the credit scheduler also does not have any effect. This feature in effect renders xen useless. I am evaluating Xen on my laptop for more serious uses on a server and the current behavior of xen is blocking for that. Will have to consider other virtualization options if this problem is not solved. -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.