Re:NVMe is not a hard disk
by anarazel on Friday June 11, 2021 @03:44PM
(#27477604)
One consequence of that is that:
> Multiple instances per device are almost a must.
Isn't actually unproblematic in OLTP, because it increases the number of journal writes that need to be flushed. With a single instance group commit can amortize the write cache flush costs much more efficiently than with many concurrent instances all separately doing much smaller group commits.
> Multiple instances per device are almost a must.
Isn't actually unproblematic in OLTP, because it increases the number of journal writes that need to be flushed. With a single instance group commit can amortize the write cache flush costs much more efficiently than with many concurrent instances all separately doing much smaller group commits.