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From John Wilson <sami.hailu...@gmail.com>
Subject Re: quick question on dirty pages and check pointing
Date Thu, 07 Sep 2017 18:10:59 GMT
Thanks!

On Thu, Sep 7, 2017 at 7:44 AM, Dmitry Pavlov <dpavlov.spb@gmail.com> wrote:

> Hi John,
>
> Process of checkpointing makes all dirty pages to be written to disk. As
> result they will become clean (non dirty)
>
> When checkpoiting is not running, dirty page can't be evicted (if
> Persistent Data storage mode is enabled). Only clean page may be evicted
> from memory.
>
> In the same time too much dirty pages (for example 75%) will trigger
> checkpoint process.
>
> Sincerely,
> Dmitriy Pavlov
>
> чт, 7 сент. 2017 г. в 1:45, John Wilson <sami.hailu.15@gmail.com>:
>
>> Hi,
>>
>> Can old dirty pages purged from memory to make more room? Or only clean
>> old pages (pages that have already been written to disk by the periodical
>> check pointing) can be purged?
>>
>> If old dirty pages which has not been check-pointed can be purged, then
>> it means the purging process (in addition to check pointing) will write
>> pages to disk?
>>
>> Thanks,
>>
>

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