John, The page is moved between FreeList buckets synchronously during the corresponding cache entry update, so it is the part of cache.put() or cache.remove() operation.
ср, 13 июн. 2018 г. в 2:32, Denis Magda <dma...@apache.org>: > Whenever you add or remove an entry, it changes the size of a page which > can lead to page movement between free list. According to this page, the > page defragmentation/compaction happens in the background and when a > threshold is met: > https://apacheignite.readme.io/docs/memory-defragmentation > > Hope Ignite persistence experts can shine more light on this. > > -- > Denis > > On Tue, Jun 12, 2018 at 3:12 PM John Wilson <sami.hailu...@gmail.com> > wrote: > > > thanks. But *when* does that happen - i.e. when is the decision made to > > move pages? Is this part of the cache.put path or a separate thread? > > > > On Tue, Jun 12, 2018 at 1:03 PM, Denis Magda <dma...@apache.org> wrote: > > > > > A page is moved between free lists that used to track pages of similar > > free > > > space left: > > > > > > https://apacheignite.readme.io/docs/memory-architecture#section-free-lists > > > > > > -- > > > Denis > > > > > > > > > On Tue, Jun 12, 2018 at 12:35 PM John Wilson <sami.hailu...@gmail.com> > > > wrote: > > > > > > > Hi, > > > > > > > > How does Ignite free unused pages? Is there some kind of background > > > thread > > > > process that scans unused pages? > > > > > > > > Thanks, > > > > > > > > > >
