luth feb24

[root@localhost ~]# history
    1  less /proc/meminfo
    2  free -m
    3  mount | grep procc
    4  mount | grep proc
    5  cd /proc
    6  ls
    7  cd
    8  top
    9  free -m
   10  less /proc/meminfo
   11  sysctl -a
   12  sysctl -a | wc -l
   13  sysctl -a | grep swapp
   14  cd /proc/sys
   15  ls
   16  cd vm
   17  ls
   18  cat swappiness
   19  echo 90 > swappiness
   20  top
   21  cd
   22  dnf install -y git
   23  git clone https://github.com/sandervanvugt/luth
   24  cd luth/
   25  ls
   26  history
   27  less /proc/cpuinfo
   28  top
   29  free -m
   30  echo 2 > /proc/sys/vm/drop_caches
   31  free -m
   32  man proc
   33  echo 3 > /proc/sys/vm/drop_caches
   34  free -m
   35  cd /proc/sys/vm
   36  ls
   37  cat dirty_expire_centisecs
   38  echo 1000 > dirty_expire_centisecs
   39  vim /etc/sysctl.conf
   40  vim /etc/sysctl.d/50-sander.conf
   41  vim /etc/sysctl.conf
   42  vim /etc/sysctl.d/50-sander.conf
   43  reboot
   44  free -m
   45  less /proc/meminfo
   46  vmstat 2 30
   47  top
   48  reboot
   49  grep -i huge /proc/meminfo
   50  free -m
   51  echo 2000 > /proc/sys/vm/nr_hugepages
   52  free -m
   53  grep -i huge /proc/meminfo
   54  vim /etc/sysctl.d/50-sander.conf
   55  reboot
   56  cd luth/
   57  ./countdown 13
   58  free -m
   59  grep -i huge /proc/meminfo
   60  cd luth/
   61  history
   62  strace ls
   63  man man
   64  man 2 intro
   65  man syscalls
   66  man 2 mmap
   67  mount
   68  ssh sander@192.168.52.132
   69  history
   70  grep Committ /proc/meminfo
   71  grep Commit /proc/meminfo
   72  top
   73  vim /etc/sysctl.d/50-sander.conf
   74  free -m
   75  echo $(( 3631 / 2 ))
   76  echo $(( 1815 + 2047 ))
   77  reboot
   78  echo 0 > /proc/sys/vm/overcommit_memory
   79  vim /etc/sysctl.d/50-sander.conf
   80  systemctl isolate graphical.target
   81  systemctl show --all
   82  systemctl show --all | grep -i overcommit
   83  top
   84  ls /proc
   85  top
   86  echo +200 > /proc/2576/oom_score_adj
   87  top
   88  echo h > /proc/sysrq-trigger
   89  dmesg
   90  history -w
   91  systemctl show --all
   92  systemctl show --all | grep -i overcommit
   93  top
   94  ls /proc
   95  top
   96  echo +200 > /proc/2576/oom_score_adj
   97  top
   98  echo h > /proc/sysrq-trigger
   99  dmesg
  100  history -w
  101  echo f > /proc/sysrq-trigger
  102  dmesg
  103  echo -400 > /proc/$(pidof gnome-shell)/oom_score_adj
  104  top
  105  echo -400 > /proc/4311/oom_score_adj
  106  #echo f > /proc/sysrq-trigger
  107  history -w
  108  echo f > /proc/sysrq-trigger
  109  dmesg
  110  grep -i slab /proc/meminfo
  111  slabinfo
  112  slabinfo | less
  113  slabtop
  114  history