From: Hyman <huangy81@chinatelecom.cn>
To: Peter Xu <peterx@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>,
Juan Quintela <quintela@redhat.com>,
qemu-devel@nongnu.org,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
Chuan Zheng <zhengchuan@huawei.com>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v10 6/6] migration/dirtyrate: implement dirty-ring dirtyrate calculation
Date: Tue, 29 Jun 2021 23:58:52 +0800 [thread overview]
Message-ID: <e9b81dfb-c6fd-2b14-4b88-55bd33705058@chinatelecom.cn> (raw)
In-Reply-To: <YNs52rBi2bqiNq3e@t490s>
在 2021/6/29 23:18, Peter Xu 写道:
> On Tue, Jun 29, 2021 at 09:04:07PM +0800, Hyman wrote:
>>
>>
>> 在 2021/6/29 7:05, Peter Xu 写道:
>>> On Mon, Jun 28, 2021 at 12:27:46AM +0800, huangy81@chinatelecom.cn wrote:
>>>> +static void dirtyrate_global_dirty_log_stop(void)
>>>> +{
>>>> + qemu_mutex_lock_iothread();
>>>
>>> One thing I missed: maybe we want to sync dirty before stop, so the value will
>>> be more accurate. Perhaps a call to memory_global_dirty_log_sync() here?
>> seems good, if the dirty ring reaper is sleeping, we can sync log by
>> ourselves, making dirtyrate more accurate.
>
> Btw, I commented here because there has the bql so it's easier; please still
> remember to record the pages after sync is done! Otherwise it'll be an effort
> of no real use (which I think that's missing in your latest repost..).
my fault, not examing the code.
>
prev parent reply other threads:[~2021-06-29 16:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-27 16:27 [PATCH v10 0/6] support dirtyrate at the granualrity of vcpu huangy81
[not found] ` <cover.1624811188.git.huangy81@chinatelecom.cn>
2021-06-27 16:27 ` [PATCH v10 1/6] KVM: introduce dirty_pages and kvm_dirty_ring_enabled huangy81
2021-06-27 16:27 ` [PATCH v10 2/6] memory: make global_dirty_tracking a bitmask huangy81
2021-06-27 16:27 ` [PATCH v10 3/6] migration/dirtyrate: introduce struct and adjust DirtyRateStat huangy81
2021-06-27 16:27 ` [PATCH v10 4/6] migration/dirtyrate: adjust order of registering thread huangy81
2021-06-27 16:27 ` [PATCH v10 5/6] migration/dirtyrate: move init step of calculation to main thread huangy81
2021-06-27 16:27 ` [PATCH v10 6/6] migration/dirtyrate: implement dirty-ring dirtyrate calculation huangy81
2021-06-28 23:05 ` Peter Xu
2021-06-29 13:04 ` Hyman
2021-06-29 15:18 ` Peter Xu
2021-06-29 15:58 ` Hyman [this message]
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