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  "title": "Multilayer Virtualized Systems Analysis with Kernel Tracing",
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  "authors": [
    "Cedric Biancheri",
    "Naser Ezzati-Jivan",
    "Michel R. Dagenais"
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    "year": 2016,
    "venue": "IEEE Future Internet of Things and Cloud Workshops (FiCloudW)",
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    "issue": null,
    "pages": "1-6",
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  "description": "The paper fuses synchronized host and virtual-machine kernel traces into a Fused Virtual Machine view that exposes how VM threads, virtual CPUs, hypervisor transitions, and physical CPUs interact.",
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    "method": "Collect synchronized LTTng kernel traces from hosts and VMs, align them using hypercalls and incremental convex-hull synchronization, and fuse them into a state-history representation. The Fused Virtual Machine view maps guest vCPUs onto physical CPUs and exposes cross-layer state.",
    "findings": "In the three-VM use cases, the fused view reveals host preemption, process migration, vmentry/vmexit transitions, and physical I/O handling that are invisible or ambiguous in a VM-only view.",
    "limitations": "Evaluation is qualitative and use-case based. Containers are explicitly outside scope. The inspected paper does not report hardware, OS/kernel versions, trace volumes, run counts, timing results, or quantitative detection accuracy.",
    "future_work": "Reuse existing analysis tools, parallelize fused analysis, and extend the approach to Java, Python, containers, and interactions among VMs on different nodes, as stated in the conclusion."
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  "tags": [
    "kernel-tracing",
    "system-tracing",
    "performance-analysis",
    "resource-analysis"
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    "virtualized systems",
    "kernel tracing",
    "multilayer analysis",
    "virtualization overhead",
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    "vmexit"
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