Heikki Linnakangas <heikki.linnakan...@enterprisedb.com> wrote: > Hmm, if I'm reading that function correctly, it makes sure that > when headPage < 0 (which implies that the SLRU has not been used > since startup, right? ) No, look at the bottom of OldSerXidSetActiveSerXmin() -- cleanup of segments is done incrementally, but when it finds it has cleaned up *everything* it sets headPage = -1. I believe that should only happen when the xmin has moved past the end of the segment. > it zeroes out the whole SLRU file, not only the currently active > region. That's not the intent. If it's doing that, it's accidental. It is trying to zero from the start of a segment, if a new one is needed. I'll look at this some more to see if I can spot something I'm missing, but if you see something to indicate it's not working as I describe above, please point me in the right direction. -Kevin
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