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[PATCH v1 0/6] support dirtyrate at the granualrity of vcpu
From: |
huangy81 |
Subject: |
[PATCH v1 0/6] support dirtyrate at the granualrity of vcpu |
Date: |
Tue, 1 Jun 2021 01:02:45 +0800 |
From: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Since the Dirty Ring on QEMU part has been merged recently, how to use
this feature is under consideration.
In the scene of migration, it is valuable to provide a more accurante
interface to track dirty memory than existing one, so that the upper
layer application can make a wise decision, or whatever. More importantly,
dirtyrate info at the granualrity of vcpu could provide a possibility to
make migration convergent by imposing restriction on vcpu. With Dirty
Ring, we can calculate dirtyrate efficiently and cheaply.
The old interface implemented by sampling pages, it consumes cpu
resource, and the larger guest memory size become, the more cpu resource
it consumes, namely, hard to scale. New interface has no such drawback.
Please review, thanks !
Best Regards !
Hyman Huang(黄勇) (6):
KVM: add kvm_dirty_ring_enabled function
KVM: introduce dirty_pages into CPUState
migration/dirtyrate: add vcpu option for qmp calc-dirty-rate
migration/dirtyrate: adjust struct DirtyRateStat
migration/dirtyrate: check support of calculation for vcpu
migration/dirtyrate: implement dirty-ring dirtyrate calculation
accel/kvm/kvm-all.c | 11 +++
include/hw/core/cpu.h | 2 +
include/sysemu/kvm.h | 1 +
migration/dirtyrate.c | 179 +++++++++++++++++++++++++++++++++++++----
migration/dirtyrate.h | 19 ++++-
migration/trace-events | 1 +
qapi/migration.json | 28 ++++++-
7 files changed, 222 insertions(+), 19 deletions(-)
--
2.24.3
- [PATCH v1 0/6] support dirtyrate at the granualrity of vcpu,
huangy81 <=
- [PATCH v1 1/6] KVM: add kvm_dirty_ring_enabled function, huangy81, 2021/05/31
- [PATCH v1 2/6] KVM: introduce dirty_pages into CPUState, huangy81, 2021/05/31
- [PATCH v1 3/6] migration/dirtyrate: add vcpu option for qmp calc-dirty-rate, huangy81, 2021/05/31
- [PATCH v1 4/6] migration/dirtyrate: adjust struct DirtyRateStat, huangy81, 2021/05/31
- [PATCH v1 5/6] migration/dirtyrate: check support of calculation for vcpu, huangy81, 2021/05/31
- [PATCH v1 6/6] migration/dirtyrate: implement dirty-ring dirtyrate calculation, huangy81, 2021/05/31