On Thu, Mar 24, 2022 at 09:44:38AM +0100, Miklos Szeredi wrote:

quoted

If so, have you benchmarked lsof using this new interface?

Not yet.  Looked yesterday at both lsof and procps source code, and
both are pretty complex and not easy to plug in a new interface.   But
I've not yet given up...

I can imagine something like getvalues(2) in lsblk (based on /sys) or
in lsfd (based on /proc; lsof replacement). The tools have defined set
of information to read from kernel, so gather all the requests to the
one syscall for each process or block device makes sense and it will
dramatically reduce number of open+read+close syscalls.

    Karel

-- 
 Karel Zak  [off-list ref]
 http://karelzak.blogspot.com