#!/bin/bash
PAGE_SIZE=$(getconf PAGE_SIZE)
cat /proc/slabinfo | awk -v page_size_B=${PAGE_SIZE} '
BEGIN {page_KiB = page_size_B/1024; TOT_KiB = 0;}
(NF == 17) {
  gsub(/[<>]/, "");
  printf("%-22s %11s %8s %8s %10s %12s %1s %5s %10s %12s %1s %12s %9s %11s %8s\n",
    $2, $3, $4, $5, $6, $7, $8, $10, $11, $12, $13, $15, $16, $17, "KiB");
}
(NF == 16) {
  num_objs=$3; obj_per_slab=$5; pages_per_slab=$6;
  KiB = (obj_per_slab > 0) ? page_KiB*num_objs/obj_per_slab*pages_per_slab : 0;
  TOT_KiB += KiB;
  printf("%-22s %11d %8d %8d %10d %12d %1s %5d %10d %12d %1s %12d %9d %11d %8d\n",
    $1, $2, $3, $4, $5, $6, $7, $9, $10, $11, $12, $14, $15, $16, KiB);
}
END {
  printf("%-22s %11s %8s %8s %10s %12s %1s %5s %10s %12s %1s %12s %9s %11s %8d\n",
    "TOTAL", "-", "-", "-", "-", "-", ":", "-", "-", "-", ":", "-", "-", "-", TOT_KiB);
}
' 2>/dev/null

exit 0