On 18-Sep-07, at 5:39 PM, Lance Norskog wrote:
Hi-
In early June Mike Klass posted a formula for the number of file
descriptors
needed by Solr:
For each segment, 7 + num indexed fields per segment.
There should be log_{base mergefactor}(numDocs) * mergeFactor
segments, approximately.
Is this still true?
No, it is a constant ~10 files per segment now (no per-field file
descriptor count).
Unfortunately, I forgot that a set of file descriptors is needed for
each Reader -- so multiply the total by 2 at least.
The formula's seeming mathematical nature shouldn't be confused for
precision: I wouldn't use it for anything other than an order-mag
level estimation of the number of fds needed.
-Mike
