Re: [Pbxt-discuss] Filesystem-cache and PBXT

2010-03-19 Thread Paul McCullagh
Hi Mark, Erkan I don't know if I can answer all questions myself. But the latest version of 1.0 and 1.1 do not use memory mapping by default. So I/O is conventional. On Mar 19, 2010, at 6:47 PM, MARK CALLAGHAN wrote: Me too. I need to learn more about the different files used by PBXT.

Re: [Pbxt-discuss] Filesystem-cache and PBXT

2010-03-19 Thread Vladimir Kolesnikov
Hi, afaik, there's no specific technique used to utilize the fact that a record might be in FS cache like cheap random access or something... Another thing - does PBXT depend on cheap random access at all. I used blkstat on DBT2 and it appears that there's still some room for improvement