# free -h
               total        used        free      shared  buff/cache   available
Mem:           3,7Gi       1,1Gi       1,1Gi        15Mi       1,5Gi       2,3Gi
Swap:          3,9Gi          0B       3,9Gi

# time memtester 100 1
memtester version 4.5.1 (64-bit)
Copyright (C) 2001-2020 Charles Cazabon.
Licensed under the GNU General Public License version 2 (only).

pagesize is 4096
pagesizemask is 0xfffffffffffff000
want 100MB (104857600 bytes)
got  100MB (104857600 bytes), trying mlock ...locked.
Loop 1/1:
  Stuck Address       : ok
  Random Value        : ok
  Compare XOR         : ok
  Compare SUB         : ok
  Compare MUL         : ok
  Compare DIV         : ok
  Compare OR          : ok
  Compare AND         : ok
  Sequential Increment: ok
  Solid Bits          : ok
  Block Sequential    : ok
  Checkerboard        : ok
  Bit Spread          : ok
  Bit Flip            : ok
  Walking Ones        : ok
  Walking Zeroes      : ok
  8-bit Writes        : ok
  16-bit Writes       : ok

Done.
48.43user 0.80system 0:50.14elapsed 98%CPU (0avgtext+0avgdata 104028maxresident)k
0inputs+0outputs (0major+638minor)pagefaults 0swaps
