There is no search-time overhead if you use MMapDirectory. At index-time there is a small cost, since after flushing or merging a new segment, we must read all bytes and write to the CFS, but that should be low cost since typically the OS will have those bytes "hot".
Mike McCandless http://blog.mikemccandless.com On Mon, Apr 24, 2017 at 10:25 PM, Otis Gospodnetić < otis.gospodne...@gmail.com> wrote: > Hi, > > Does CFS/Compound file format have any known/measurable overhead? Or is it > so insignificant that there is no value in trying to disable it? > > Thanks, > Otis > -- > Monitoring - Log Management - Alerting - Anomaly Detection > Solr & Elasticsearch Consulting Support Training - http://sematext.com/ >
