"Zeugswetter Andreas DAZ SD" <ZeugswetterA(at)spardat(dot)at> writes:
> Is it possible to do a patch that produces a dirty buffer list in LRU order
> and stops early when eighter maxpages is reached or bgwriter_percent
> pages are scanned ?
Only if you redefine the meaning of bgwriter_percent. At present it's
defined by reference to the total number of dirty pages, and that can't
be known without collecting them all.
If it were, say, a percentage of the total length of the T1/T2 lists,
then we'd have some chance of stopping the scan early.
regards, tom lane