Hi Ethan, ----- Original Message ----- > Dear Gluster Dev Team : > I'm Ethan, Assistant engineer in Samsung electronics. Reviewing your > paper, I have some questions of performance factors in gluster. Which paper? Can you provide a link? Also, please note that this is a community mailing list, and we cannot guarantee quick response times here - if you need a fast response, I'm happy to put you through to the right people. Thanks, John Mark Walker Gluster Community Guy > First, what does it mean the option "performance.cache-*"? Does it > mean read cache? If does, what's difference between the options > "prformance.cache-max-file-size" and "performance.cache-size" ? > I read your another paper("performance in a gluster system, versions > 3.1.x") and it says as below on Page 12, > (Gluster Native protocol does not implement write caching, as we > believe that the modest performance improvements from rite caching > do not justify the risk of cache coherency issues.) > Second, how much is the read throughput improved as configuring 2-way > replication? we need any statistics or something like that. > ("performance in a gluster system, versions 3.1.x") and it says as > below on Page 12, > (However, read throughput is generally improved by replication, as > reads can be delivered from either storage node) > I would ask you to return ASAP.