Kernel: slabinfo / kioctx / kiocb

[oelk]

Hello,
i 'm looking for a way to find out if a process or a database is using async IO.

In earlier versions i asked:

Code: Select all

egrep "kioctx|kiocb" /proc/slabinfo

In kernels 4.x this information is missing, but /proc/slabinfo is always there.

How can i find out if async IO is used?

Best regards