On 19-Nov-08, at 5:12 AM, Michael McCandless (JIRA) wrote:
How can the VM system possibly make good decisions about what to swap out? It can't know if a page is being used for terms dict index, terms dict, norms, stored fields, postings. LRU is not a good policy, because some pages (terms index) are far far more costly to miss than others.
A note on this discussion: we recently re-architected a large database- y, lucene-y system to use mmap-based storage and are extremely pleased with the performance. Sharing the buffers among processes is rather cool, as Marvin mentions, as is the near-instantaneous startup.
-Mike --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
