Opps sorry you are right a1m does not exist.
On Thu, Dec 26, 2013 at 9:13 PM, Andrey Lomakin <[email protected]>wrote: > Hi > Sylvain I have added example > https://github.com/orientechnologies/orientdb/wiki/plocal-storage-disk-cache#queue-sizeshow > pages and memory are distributed to make more clear why if we sum 25% + > 50% + 75% we have 150% of cache size which is a bit strange of course, but > take in account that a1out pages do not consume RAM they contain only meta > data, pointers to pages on disk not in memory. > > > On Sun, Dec 22, 2013 at 7:43 PM, Sylvain Spinelli < > [email protected]> wrote: > >> Hi Andrey, >> >> Thanks for these explanations, really useful for me when I will migrate >> to plocal... >> >> Not sure to well understand these points (in bold) : >> >> The size of a1in queue is *25%* of read cache size, size of a1out >> is *50%* of cache size and size of am is* 75%* of cache size. >> >> At the initial state the cache is empty, so all accessed pages are >> put in a1in queue, and size of this queue is 100% of size of read cache. >> But then, when there are no room for new pages in a1in, old pages >> removed from a1in and put in a1out. >> Eventually when a1out contains requested pages we need room for am queue >> pages, so we once again remove a1in pages and put them in a1out queue, *a1m* >> queue is truncated till it is reached 25% size of read cache. >> >> >> Percentages and queue name "a1m" seems strange... >> >> I'm looking forward to read your next article ;) >> >> >> Sylvain >> >> >> >> Le 20/12/2013 19:19, Andrey Lomakin a écrit : >> >> Hi, >> We have added description of design of storage disk cache. May it will be >> interesting for you to look into OrientDB internals >> https://github.com/orientechnologies/orientdb/wiki/plocal-storage-disk-cache >> >> Next time we will provide description of WAL design and plocal cluster. >> >> -- >> Best regards, >> Andrey Lomakin. >> >> Orient Technologies >> the Company behind OrientDB >> >> -- >> >> --- >> You received this message because you are subscribed to the Google Groups >> "OrientDB" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> >> >> -- >> >> --- >> You received this message because you are subscribed to the Google Groups >> "OrientDB" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/groups/opt_out. >> > > > > -- > Best regards, > Andrey Lomakin. > > Orient Technologies > the Company behind OrientDB > > -- Best regards, Andrey Lomakin. Orient Technologies the Company behind OrientDB -- --- You received this message because you are subscribed to the Google Groups "OrientDB" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
