I have some experimeltal data about this extension. I will gather it and post hopefully this weekend.
Tom Lane wrote: > Koichi Suzuki <[EMAIL PROTECTED]> writes: > >>Here're a couple of patches for PostgreSQL 64bit support. There're just >>two extension to 64bit, size of shared memory and transaction ID. > > > I asked originally for some experimental evidence showing any value > in having more than 2Gb of shared buffers. In the absence of any > convincing demonstration, I'm not very inclined to worry about whether > we can handle wider-than-int shared memory size. > > As for the XID change, I don't think this patch accurately reflects the > size of the impact. There are a lot of things that in practice need to > be the same size as XID (CID, most obviously, but I suspect also OID). > And again, some demonstration of the performance impact would be > appropriate. Here, not only do you have to prove that widening XID > isn't a big performance hit in itself, but you also have to convince > us that it's a win compared to the existing approach of vacuuming at > least every billion transactions. > > regards, tom lane > -- ------------------------------------------- Koichi Suzuki Open Source Engineeering Departmeent, NTT DATA Intellilink Corporation Phone: +81-3-5566-9628 WWW: http://www.intellilink.co.jp ------------------------------------------ ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
