[Bug][KVM][Crystal Ridge] Terrible performance of vNVDIMM on QEMU with device DAX backend
Bug #1745899 reported by
quanxian
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
intel |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Medium
|
Canonical Kernel Team | ||
Bionic |
Fix Released
|
Medium
|
Canonical Kernel Team |
Bug Description
Description:
When device DAX (e.g., /dev/daxX.Y) is used as QEMU vNVDIMM backend, its performance in guest is far behind the performance on bare metal.
Commit Ids:
aa2e063aea79 b8d7044bcff7 (which is in KVM branch instead of mainline kernel)
Target kernel:4.16
Target Release:18.04
information type: | Proprietary → Public |
Changed in linux (Ubuntu Bionic): | |
status: | New → Triaged |
importance: | Undecided → Medium |
assignee: | nobody → Canonical Kernel Team (canonical-kernel-team) |
tags: | added: kernel |
tags: | added: bionic kernel-da-key |
Changed in linux (Ubuntu Bionic): | |
status: | Triaged → Fix Committed |
Changed in intel: | |
status: | New → Fix Released |
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backporting?