Hideyuki Kawashima wrote: > Bruce, > > Thanks for your comments, and let me answer to your question. > Sigres is *not* significantly faster than just creating a file system on > the permanent memory and putting xlog on there. > Sigres is slightly faster than the case because each backend does not > call XLogWrite while bgWriter does.
The question then is how much faster is it, and is that worth adding extra code to improve it. --------------------------------------------------------------------------- > > -- Hideyuki > > Bruce Momjian wrote: > > Tom Lane wrote: > > > >> Gene <[EMAIL PROTECTED]> writes: > >> > >>> ... just my two cents. on a side note, would putting the wal on a > >>> tmpfs partition give you something similar? > >>> > >> Indeed, I'm wondering why one needs to hack the Postgres core to throw > >> away data integrity guarantees; there are plenty of ways to do that > >> already :-(. Hideyuki-san has not explained exactly what integrity > >> assumptions he wants to make or not make. I'm surely willing to listen > >> to supporting a different set of assumptions than we currently use, but > >> I'd like to see a clear explanation of what assumptions are being made > >> and why they represent a useful case. > >> > > > > I am unsure why Sigres is significantly faster than just creating a file > > system on the permanent memory and putting xlog on there. > > > > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 1: if posting/reading through Usenet, please send an appropriate > subscribe-nomail command to [EMAIL PROTECTED] so that your > message can get through to the mailing list cleanly -- Bruce Momjian <[EMAIL PROTECTED]> http://momjian.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
