Re: [PATCH 1/2] mm: vmscan: Split proactive reclaim statistics from direct reclaim statistics

On Tue, Mar 18, 2025 at 08:03:44PM +0800, Hao Jia [off-list ref] wrote:

quoted

How silly is it to have multiple memory.reclaim writers?
Would it make sense to bind those statistics to each such a write(r)
instead of the aggregated totals?

I'm sorry, I didn't understand what your suggestion was conveying.

For instance one reclaimer for page cache and another for anon (in one
memcg):
  echo "1G swappiness=0" >memory.reclaim &
  echo "1G swappiness=200" >memory.reclaim

Are you suggesting that the statistics for {pgscan, pgsteal}_{kswapd,
direct, khugepaged} be merged into one?

Not more merging -- opposite, having separate stats (somewhere) for each
of the above reclaimers.

Michal