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Filename : a2_user_mem.shared
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#!/bin/bash

LOG_FILE="/var/log/memory_usage_user.log"
DATE=$(date "+%Y-%m-%d %H:%M:%S")

get_memory_faults() {
  local faults_output=$(lveinfo  -d --period 1d --by-fault pmem --show-columns id,PMemF -j)

  if [ "$faults_output" ]; then
    echo "$faults_output" | jq -r --arg date "$DATE" '.data[] | "\($date) \(.ID): \(.PMemF) faults"' >> $LOG_FILE
  fi
}

calculate_average_memory() {
  local json_output=$(lveinfo --order-by pmem_avg --limit 10 -d --show-columns aPMem,id -j)

    # Check if the data array in the JSON output is empty
    if [ "$(echo "$json_output" | jq '.data | length')" -gt 0 ]; then
    # Get sum and count of aPMem
      local sum=$(echo "$json_output" | jq '[.data[].aPMem] | add')
      local count=$(echo "$json_output" | jq '.data | length')
      local bytes_to_gb=1073741824  # 1024*1024*1024
      # Calculate the average in GB
      local average=$(echo "scale=2; $sum / $count / $bytes_to_gb" | bc)
      echo "avg_top_10_user_mem=${average} Top 10 user's average memory usage: ${average} GB"
      exit 0
    else
      echo "No data to calculate average"
      exit 1
    fi
}

calculate_average_memory
get_memory_faults