On Fri, Aug 10, 2007 at 10:32:35AM +0900, ITAGAKI Takahiro wrote: > Here is a patch to reduce the size of PageFreeSpaceInfo on 64bit platform. > We will utilize maintenance_work_mem twice with the patch. > > The sizeof(PageFreeSpaceInfo) is 16 bytes there because the type of 'avail' > is 'Size', that is typically 8 bytes and needs to be aligned in 8-byte bounds. > I changed the type of the field to uint32. We can store the freespace with > uint16 at smallest, but the alignment issue throws it away.
So... does that mean that the comment in the config file about 6 bytes per page is incorrect? -- Decibel!, aka Jim Nasby [EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
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