Utility to get per-pid delay accounting statistics from the kernel using libnl to fetch data from the Netlink interface.
$ sudo ./getdelays <PID>
It is possible to fetch delay accounting information without running as root, providing CAP_NET_ADMIN capabilities to the binary:
$ sudo setcap cap_net_admin+ep ./getdelays
Whats linux delay accounting?
Docs available at: https://www.kernel.org/doc/Documentation/accounting/delay-accounting.txt
Based on linux/tools/accounting/getdelays.c, but uses a higher level abstraction (libnl) instead of handling the socket and parsing the data manually.