Re: Upcoming: Notifications, FS notifications and fsinfo()

From: David Howells
Date: Wed Apr 01 2020 - 12:07:04 EST


Miklos Szeredi <miklos@xxxxxxxxxx> wrote:

> I've still not heard a convincing argument in favor of a syscall.

>From your own results, scanning 10000 mounts through mountfs and reading just
two values from each is an order of magnitude slower without the effect of the
dentry/inode caches. It gets faster on the second run because the mountfs
dentries and inodes are cached - but at a cost of >205MiB of RAM. And it's
*still* slower than fsinfo().

David