Jerry Sievers schrieb am 20.02.2019 um 21:19:
My workload is simple. I insert 1 million rows into a table with 100
columns, where each column is 256 bytes in length, and every 10
inserts are batched into a transaction.
Your test workload qualifies for TOASTing due to the $unrealistically
long physical tuple size.
Hmm. I though TOAST is only applied to single values, not the entire tuple (row)?
As each column is substantially shorter than the TOAST threshold, I would not expect toasting to kick in here.
Or am I missing something?