[HACKERS] PERFORMANCE IMPROVEMENT by mapping WAL FILES

2001-09-26 Thread Janardhana Reddy
Hi all, By mapping the WAL files by each backend in to its address space using "mmap" system call , there will be big improvements in performance from the following point of view: 1. Each backend directly writes in to the address space which is obtained by

Re: [HACKERS] PERFORMANCE IMPROVEMENT by mapping WAL FILES

2001-10-01 Thread Janardhana Reddy
I have just completed the functional testing the WAL using mmap , it is working fine, I have tested by commenting out the "CreateCheckPoint " functionality so that when i kill the postgres and restart it will redo all the records from the WAL log file which is updated using m