Hi Navneet,
With RANDOM IOcontext, on modern OS's / Java versions, Lucene will hint the
memory mapped segment that the IO will be random using madvise POSIX API
with MADV_RANDOM flag.
For READ IOContext, Lucene maybe hits with MADV_SEQUENTIAL, I'm not sure.
Or maybe it doesn't hint anything?
It'
Hi Lucene Experts,
I wanted to understand the performance difference between opening and
reading the whole file using an IndexInput with IoContext as RANDOM vs READ.
I can see .vec files(storing the flat vectors) are opened with RANDOM and
whereas dvd files are opened as READ. As per my testing wi
