Hi,=20
I am reading some text on checkpoint, WAL etc in PG. read the files
xlog.c,=
bgwriter.c. I have some newbie related questions which I am confused
with.=
Appreciate if someone can throw more light.
The bgwriter is associated in writing the dirty buffers to the disk very
so=
often.
Question : Does this write happen to the ( Xlog file and the data file )
or=
( to the Xlog file only ) ?
Does the bgwriter mark the "dirty" buffer ( clean,free,...) after being
wri=
tten to the disk so that it can be used once again to store new data?
Apart from Checkpoint is there any point at which dirty buffers are
written=
to the data file?
Thanks,
Kenneth
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