Example:
# for ssd in $(localcli vsan storage list |grep "Group UUID"|awk '{print $5}'|sort -u);do echo $ssd;vsish -e get /vmkModules/lsom/disks/$ssd/info|grep Congestion;done
Tue Jul 20 19:56:18 UTC 2021
########-####-####-####-########5409
memCongestion:0
slabCongestion:0
ssdCongestion:227 <------- This is already too high, seeing a value <100 but incrementing is already enough to suspect.
iopsCongestion:0
logCongestion:0 <------- In some cases logCongestion has increased and no ssdCongestion is present.
compCongestion:0
mdCongestion:0
memCongestionLocalMax:0
slabCongestionLocalMax:0
ssdCongestionLocalMax:227
iopsCongestionLocalMax:0
logCongestionLocalMax:0
compCongestionLocalMax:0
mdCongestionLocalMax:0