[HACKERS] is it possible to enlarge the TopMemoryContext?

2003-05-31 Thread Alice Lottini
Hello everybody, we've developed a function which reads a huge amount of data from postgres and, being recursive, does several memory-intensive elaborations and writes the results back on two postgres tables. No memory context switch has been done in our function. Now we have to compare this func

[HACKERS] disk pages, buffers and blocks

2003-02-06 Thread Alice Lottini
Hi, we'd like to know how disk pages map to disk blocks. In particular, looking at the code it seems that one page can be built on several disk blocks while in the first lines of bufpage.h it is said that "a postgres disk page is an abstraction layered on top of *a* postgres disk block". As a matte

Re: [HACKERS] 7.4 Wishlist

2002-11-30 Thread Alice Lottini
Hi, although I'm just a novice in this mailing list I'd like to give my contribution to the 7.4 wishlist. I'd like to add to the PostgreSQL code some new low-level, primitive fuctions in order to give native support to FP-based algorithms for rule mining (Frequent Pattern Growth and extensions such