=?utf-8?q?Rados=C5=82aw_Smogura?= <rsmog...@softperience.eu> writes: > No, no, no :) I wanted to do this, but from above reason I skipped it. I swap > VM pages, I do remap, in place where the shared buffer was I put mmaped page, > and in place where mmaped page was I put shared page (in certain cases, which > should be optimized by e. g. read for update, for initial read of page in > process I directly points to shared buffer), it can be imagined as I affects > TLB. This what I call "VM swap" is remapping, so I don't change pointers, I > change only where this pointers points in physical memory, preserving same > pointer in Virtual Memory.
... Huh? Are you saying that you ask the kernel to map each individual shared buffer separately? I can't believe that's going to scale to realistic applications. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers