Re: [RFC v4 0/3] migration: reduce time of loading non-iterable vmstate

2022-12-23 Thread Chuang Xu
On 2022/12/23 下午11:50, Peter Xu wrote: Chuang, On Fri, Dec 23, 2022 at 10:23:04PM +0800, Chuang Xu wrote: In this version: - attach more information in the cover letter. - remove changes on virtio_load(). - add rcu_read_locked() to detect holding of rcu lock. The duration of loading

Re: [RFC v4 0/3] migration: reduce time of loading non-iterable vmstate

2022-12-23 Thread Peter Xu
Chuang, On Fri, Dec 23, 2022 at 10:23:04PM +0800, Chuang Xu wrote: > In this version: > > - attach more information in the cover letter. > - remove changes on virtio_load(). > - add rcu_read_locked() to detect holding of rcu lock. > > The duration of loading non-iterable vmstate accounts for a

[RFC v4 0/3] migration: reduce time of loading non-iterable vmstate

2022-12-23 Thread Chuang Xu
In this version: - attach more information in the cover letter. - remove changes on virtio_load(). - add rcu_read_locked() to detect holding of rcu lock. The duration of loading non-iterable vmstate accounts for a significant portion of downtime (starting with the timestamp of source qemu stop