Apologize first because I am not familiar with database. So I probably did not find the right doc before posting my question.
I received a chart which is plotted by X - date, and Y - throughput (M/ sec). It shows that recently (after N Jan) the read/ write throughput was increased drastically.
So I lookup on the internet, finding doc like [1] points out that some pg_XXXXX tables, such as pg_stat_user_tables, looks like can be used to check such stats. For instance,
SELECT schemaname, relname, idx_tup_fetch + seq_tup_read as total_read
FROM pg_stat_user_tables
WHERE idx_tup_fetch is not NULL and idx_tup_fetch + seq_tup_read != 0
ORDER BY total_read desc
LIMIT 10;
Is this a correct way to find tables frequently being read? If not what's a better way to achieve this? And how about write? Or any other docs that I should read as well?
I appreciate any suggestions, thanks.