On 3/18/2014 7:12 AM, Salman Akram wrote: > Is there a rule of thumb for ideal block size for SSDs for large indexes > (in hundreds of GBs)? Read performance is of top importance for us and we > can sacrifice the space a little... > > This is the one we just got and wanted to see if there are any test results > out there > http://www.storagereview.com/micron_p420m_enterprise_pcie_ssd_review
The best filesystem block size to use for SSDs is dictated more by the characteristics of the SSD itself than what data you put on it. Here's an awesome series of articles about SSDs that I heard about from Shalin Shekhar Mangar: http://codecapsule.com/2014/02/12/coding-for-ssds-part-1-introduction-and-table-of-contents/ With the page size of most large SSDs at 16KB, you might want to go with a multiple of that, like 64KB, and learn about the proper use of parted to align partition boundaries. As for whether there are Solr settings that can improve the I/O characteristics when reading/writing, that I do not know. Thanks, Shawn
