After reading multiple articles, including one from a Cisco engineer, I've changed my mind. It looks like having lsmpi_io memory utilization at 99.9% is totally normal as it is allocated only once at the moment of reboot. More than that, too much fre...
Looks like 16.3.5b has this bug too:
EdgeRouter#sh verCisco IOS Software [Denali], Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version 16.3.5b, RELEASE SOFTWARE (fc1)
EdgeRouter#sh mem Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)...
