Bug 2155622
| Summary: | L1 Cache info not correct | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Container Native Virtualization (CNV) | Reporter: | Nils Koenig <nkoenig> | ||||
| Component: | Virtualization | Assignee: | Barak <bmordeha> | ||||
| Status: | ASSIGNED --- | QA Contact: | Kedar Bidarkar <kbidarka> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 4.10.9 | CC: | acardace, dholler, djdumas, jlejosne, nkoenig | ||||
| Target Milestone: | --- | ||||||
| Target Release: | 4.14.0 | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | Type: | Bug | |||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
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Created attachment 1933987 [details] libvirt domain xml Description of problem: The information which CPUs and their hyperthread share which cache seems to be wrong in the guest. Version-Release number of selected component (if applicable): oc version Client Version: 4.10.45 Server Version: 4.10.45 Kubernetes Version: v1.23.12+8a6bfe4 How reproducible: Guest # lscpu --all --extended CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE 0 0 0 0 0:0:0:0 yes 1 0 0 0 1:1:0:0 yes 2 0 0 1 2:2:1:0 yes 3 0 0 1 3:3:1:0 yes 4 0 0 2 4:4:2:0 yes 5 0 0 2 5:5:2:0 yes Dom XML <vcpupin vcpu='0' cpuset='1'/> <vcpupin vcpu='1' cpuset='113'/> <vcpupin vcpu='2' cpuset='2'/> <vcpupin vcpu='3' cpuset='114'/> <vcpupin vcpu='4' cpuset='3'/> <vcpupin vcpu='5' cpuset='115'/> Bare metal host lscpu --all --extended CPU NODE SOCKET CORE L1d:L1i:L2:L3 ONLINE MAXMHZ MINMHZ 0 0 0 0 0:0:0:0 yes 4300.0000 1000.0000 1 0 0 1 1:1:1:0 yes 4300.0000 1000.0000 2 0 0 2 2:2:2:0 yes 4300.0000 1000.0000 3 0 0 3 3:3:3:0 yes 4300.0000 1000.0000 ... 112 0 0 0 0:0:0:0 yes 4300.0000 1000.0000 113 0 0 1 1:1:1:0 yes 4300.0000 1000.0000 114 0 0 2 2:2:2:0 yes 4300.0000 1000.0000 115 0 0 3 3:3:3:0 yes 4300.0000 1000.0000 Note that on the HW the it's indicated that a CPU and it's Hyperthread share all caches (e.g. cpu1 and cpu113 have 1:1:1:0). In the guest the coresponding cpu0 and cpu1 have a different line there 0:0:0:0 vs 1:1:0:0. Now I can't tell if thats a real issue or just a cosmetic thing but it's definately different and should be corrected.