| Summary: | host call trace when booting win2k8-64 guest with large memory and multiple vcpu | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Xu Han <xuhan> | ||||
| Component: | qemu-kvm | Assignee: | Luiz Capitulino <lcapitulino> | ||||
| Status: | CLOSED WORKSFORME | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 7.0 | CC: | acathrow, hhuang, juzhang, michen, virt-maint, xfu, xuhan, xwei | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2013-09-10 01:34:50 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Attachments: |
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Created attachment 790810 [details]
host dmesg log
The host kernel seems to be spinning on a spinlock for 22s! Is that machine on virtlab? I don't have any machine that big around, so I'll have to look for one to try to reproduce the issue. Something you could do, is to get a kernel dump, store in it in the machine itself and let me log in. (In reply to Luiz Capitulino from comment #3) > The host kernel seems to be spinning on a spinlock for 22s! > > Is that machine on virtlab? I don't have any machine that big around, so > I'll have to look for one to try to reproduce the issue. > > Something you could do, is to get a kernel dump, store in it in the machine > itself and let me log in. Hi Hanxu, Can you reply this info? There's a number of fixes between kernels 3.10.0-11.el7 and 3.10.0-15.el7. If you really can't get the issue anymore with latest kernel, then I think you should close this bz as WORKSFORME. |
Description of problem: host call trace when booting win2k8-64 guest with large memory and multiple vcpu and guest boot take more than 10min. win2k8r2-64 hit this issue, but win2k3-32/64, win8-32/64, win2012-64 won't I added dmesg log to attachment. Version-Release number of selected component (if applicable): kernel:3.10.0-11.el7.x86_64 qemu:qemu-kvm-1.5.2-4.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.verify mem and cpu in host #free -g total used free shared buffers cached Mem: 503 67 435 0 0 62 -/+ buffers/cache: 5 498 Swap: 3 0 3 #cat /proc/cpuinfo(total 48 cores) .... processor : 47 vendor_id : AuthenticAMD cpu family : 16 model : 9 model name : AMD Opteron(tm) Processor 6172 2.clear dmesg #dmesg -c 3.boot guest(not overcommit) #/usr/libexec/qemu-kvm -name vm1 -nodefaults \ -m 420G \ -smp 32,cores=8,threads=1,sockets=4 \ -M pc-i440fx-rhel7.0.0 -cpu Opteron_G3 -rtc base=utc,clock=host,driftfix=slew -k en-us -boot menu=on -monitor stdio -vnc :2 -spice disable-ticketing,port=5932 -vga qxl -qmp tcp:0:5556,server,nowait -drive file=/home/win2008-x64.qcow2,if=none,id=disk,format=qcow2,cache=none,werror=stop,rerror=stop -device ide-hd,drive=disk,bus=ide.1,unit=0,id=disk0,bootindex=1 -balloon virtio Actual results: guest boot take more than 10min and host call trace Expected results: guest can boot with no errors Additional info: I will update test result in Intel host later