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[Qemu-devel] [RFC PATCH v4 0/5] Separate thread for VM migration
From: |
Umesh Deshpande |
Subject: |
[Qemu-devel] [RFC PATCH v4 0/5] Separate thread for VM migration |
Date: |
Tue, 16 Aug 2011 23:56:35 -0400 |
Following patch series deals with VCPU and iothread starvation during the
migration of a guest. Currently the iothread is responsible for performing the
guest migration. It holds qemu_mutex during the migration and doesn't allow VCPU
to enter the qemu mode and delays its return to the guest. The guest migration,
executed as an iohandler also delays the execution of other iohandlers.
In the following patch series,
The migration has been moved to a separate thread to
reduce the qemu_mutex contention and iohandler starvation.
Umesh Deshpande (5):
MRU ram list
ramlist lock
separate migration bitmap
separate thread for VM migration
synchronous migrate_cancel
arch_init.c | 26 +++++++++---
buffered_file.c | 104 ++++++++++++++++++++++++++++++++++-----------------
buffered_file.h | 3 +
cpu-all.h | 41 ++++++++++++++++++++
exec.c | 100 ++++++++++++++++++++++++++++++++++++++++++++++--
hw/hw.h | 5 ++-
migration.c | 78 ++++++++++++++++++++------------------
migration.h | 1 +
qemu-common.h | 2 +
qemu-thread-posix.c | 10 +++++
qemu-thread.h | 1 +
savevm.c | 30 +++++++++------
12 files changed, 304 insertions(+), 97 deletions(-)
--
1.7.4.1
- [Qemu-devel] [RFC PATCH v4 0/5] Separate thread for VM migration,
Umesh Deshpande <=
- [Qemu-devel] [RFC PATCH v4 1/5] MRU ram list, Umesh Deshpande, 2011/08/16
- [Qemu-devel] [RFC PATCH v4 4/5] separate thread for VM migration, Umesh Deshpande, 2011/08/16
- [Qemu-devel] [RFC PATCH v4 3/5] separate migration bitmap, Umesh Deshpande, 2011/08/16
- [Qemu-devel] [RFC PATCH v4 2/5] ramlist mutex, Umesh Deshpande, 2011/08/16
- Re: [Qemu-devel] [RFC PATCH v4 2/5] ramlist mutex, Marcelo Tosatti, 2011/08/23