a script that messures the time it takes to a single pod to become redy

measure_pod_start.sh

#!/usr/bin/env bash

pod=$1
scheduled=`kubectl get pod $pod -o json | jq -r '.status.conditions[] | select(.type=="PodScheduled") | .lastTransitionTime' | sed 's/T/ /g' | tr -d 'Z'`
ready=`kubectl get pod $pod -o json | jq -r '.status.conditions[] | select(.type=="Ready") | .lastTransitionTime' | sed 's/T/ /g' | tr -d 'Z'`
scheduled_epoch=`date -j -u  -f "%Y-%m-%d %T" "$scheduled" "+%s"` #  mac os date ( linux has different 
echo "${pod} sechedualed at ${scheduled_epoch}"
ready_epoch=`date -j -u  -f "%Y-%m-%d %T" "$ready" "+%s"`
load_seconds=$((ready_epoch-scheduled_epoch))
echo "${pod} launch time: ${load_seconds} seconds"