If you load it explicitly, then all 800 MB will make it into RAM. It's easy to try, the API for this is super simple.
Otis --- [EMAIL PROTECTED] wrote: > Does it take 800MB of RAM to load that index into a > RAMDirectory? Or are only some of the files loaded into RAM? > > --- Otis Gospodnetic <[EMAIL PROTECTED]> wrote: > > > Hello, > > > > 100 parallel searches going against a single index on a single > > disk > > means a lot of disk seeks all happening at once. One simple > > way of > > working around this is to load your FSDirectory into > > RAMDirectory. > > This should be faster (could you report your > > observations/comparisons?). You can also try using ramfs if > > you are > > using Linux. > > > > Otis > > > > --- Ravi <[EMAIL PROTECTED]> wrote: > > > > > We have one large index for a document repository of > > 800,000 > > > documents. > > > The size of the index is 800MB. When we do searches against > > the > > > index, > > > it takes 300-500ms for a single search. We wanted to test > > the > > > scalability and tried 100 parallel searches against the > > index with > > > the > > > same query and the average response time was 13 seconds. We > > used a > > > simple IndexSearcher. Same searcher object was shared by all > > the > > > searches. I'm sure people have success in configuring lucene > > for > > > better > > > scalability. Can somebody share their approach? > > > > > > Thanks > > > Ravi. > > > > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > > For additional commands, e-mail: > > [EMAIL PROTECTED] > > > > > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > For additional commands, e-mail: > > [EMAIL PROTECTED] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
