Thanks! On Thu, Sep 7, 2017 at 7:44 AM, Dmitry Pavlov <[email protected]> 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 <[email protected]>: > >> 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, >> >
