Re: [HACKERS] Checkpoints and buffers that are hint-bit-dirty

2007-07-08 Thread Gregory Stark
"Tom Lane" <[EMAIL PROTECTED]> writes: > Gregory Stark <[EMAIL PROTECTED]> writes: >> When we checkpoint we write out all dirty buffers. But ISTM we don't really >> need to write out buffers which are dirty but which have an LSN older than >> the >> previous checkpoint. Those represent buffers wh

Re: [HACKERS] Checkpoints and buffers that are hint-bit-dirty

2007-07-07 Thread Tom Lane
Gregory Stark <[EMAIL PROTECTED]> writes: > When we checkpoint we write out all dirty buffers. But ISTM we don't really > need to write out buffers which are dirty but which have an LSN older than the > previous checkpoint. Those represent buffers which were dirtied by a > non-wal-logged modificati