linux performance April 22

ncore               fips-finish-install   firewalld             fixparts
[root@localhost queue]# history
    1  modinfo softdog
    2  modprobe soft_active_on_boot=true softdog
    3  modprobe softdog soft_active_on_boot=true
    4  cd /etc
    5  vim modprobe.d/firewalld-sysctls.conf
    6  echo h > /proc/sysrq-trigger
    7  dmesg
    8  echo f > /proc/sysrq-trigger
    9  journactl | grep OOM
   10  journalctl | grep OOM
   11  journalctl | less
   12  ps aux | grep gdm
   13  cd /proc/976
   14  ls
   15  cat oom_score
   16  man proc
   17  echo -17 > oom_adj
   18  echo h > /proc/sysrq-trigger
   19  dmesg
   20  echo f > /proc/sysrq-trigger
   21  cd /proc/sys
   22  ls
   23  vim /etc/rsyslog.conf
   24  systemctl restart rsyslog
   25  echo h > /proc/sysrq-trigger
   26  less /var/log/kern.log
   27  grep kern /etc/rsyslog.conf
   28  pwd
   29  ls
   30  cd kernel/
   31  ls
   32  cat pid_max
   33  echo 65535 > pid_max
   34  cat pid_max
   35  for i in $(ls /proc/*/oom_score); do echo "$(cat $i) score $i "; done
   36  for i in $(ls /proc/*/oom_score); do echo "$(cat $i) score $i "; done | sort -n
   37  ps aux | grep 4280
   38  cd ../..
   39  echo -17 4280/oom_adj
   40  echo -17 > 4280/oom_adj
   41  history -w
   42  cd /proc/sys
   43  ls
   44  vim /etc/rsyslog.conf
   45  systemctl restart rsyslog
   46  echo h > /proc/sysrq-trigger
   47  less /var/log/kern.log
   48  grep kern /etc/rsyslog.conf
   49  pwd
   50  ls
   51  cd kernel/
   52  ls
   53  cat pid_max
   54  echo 65535 > pid_max
   55  cat pid_max
   56  for i in $(ls /proc/*/oom_score); do echo "$(cat $i) score $i "; done
   57  for i in $(ls /proc/*/oom_score); do echo "$(cat $i) score $i "; done | sort -n
   58  ps aux | grep 4280
   59  cd ../..
   60  echo -17 4280/oom_adj
   61  echo -17 > 4280/oom_adj
   62  history -w
   63  echo f > /proc/sysrq-trigger
   64  cd
   65  cd performance/
   66  ./countdown 12
   67  cd /proc/sys
   68  ls
   69  cd vm
   70  ls
   71  cat swappiness
   72  echo 30 > swappiness
   73  echo 10 > swappiness
   74  free -m
   75  firefox &
   76  free -m
   77  killall firefox
   78  free -m
   79  echo 90 > swappiness
   80  free -m
   81  ls
   82  free -m
   83  echo 3 > drop_caches
   84  free -m
   85  poweroff
   86  cd /proc/sys
   87  cd vm/
   88  ls
   89  cat dirty_expire_centisecs
   90  grep uge /proc/meminfo
   91  free -m
   92  echo 500 > nr_hugepages
   93  free -m
   94  grep uge /proc/meminfo
   95  ls
   96  cat panic_on_oom
   97  echo 1 > panic_on_oom
   98  history -w
   99  cd /proc/sys
  100  cd vm/
  101  ls
  102  cat dirty_expire_centisecs
  103  grep uge /proc/meminfo
  104  free -m
  105  echo 500 > nr_hugepages
  106  free -m
  107  grep uge /proc/meminfo
  108  ls
  109  cat panic_on_oom
  110  echo 1 > panic_on_oom
  111  history -w
  112  echo f > /proc/sysrq-trigger
  113  cd /proc
  114  cd net/
  115  ls
  116  ssh [email protected]
  117  sysctl -a
  118  sysctl -a | wc
  119  sysctl -a | grep swappi
  120  sysctl -a | wc
  121  sysctl -a
  122  vim /etc/sysctl.conf
  123  ls /etc/sysctl.d/
  124  ls /usr/lib/sysctl.d/
  125  less /usr/lib/sysctl.d/50-redhat.conf
  126  cd ipv4
  127  less /usr/lib/sysctl.d/50-redhat.conf
  128  pwd
  129  vim /etc/sysctl.d/swappi.conf
  130  sysctl --help
  131  sysctl -p /etc/sysctl.d/swappi.conf
  132  sysctl -a | grep swappi
  133  systemctl status tuned
  134  dnf search tuned
  135  dnf install tuned
  136  systemctl enable --now tuned
  137  systemctl status tuned
  138  tuned-adm list
  139  tuned-adm recommend
  140  tuned-adm profile atomic-guest
  141  tuned-adm profile virtual-guest
  142  cd /usr/lib/tuned/
  143  ls
  144  cd virtual-
  145  cd virtual-guest/
  146  ls
  147  vim tuned.conf
  148  sysctl -a | grep swappi
  149  reboot
  150  sysctl -a | grep swapp
  151  tuned-adm list
  152  systemctl list-units
  153  systemctl list-dependencies
  154  systemctl status tuned
  155  systemctl enabled tuned
  156  systemctl enable tuned
  157  reboot
  158  sysctl -a | grep swapp
  159  cat /proc/sys/vm/swappiness
  160  cd /etc
  161  find / -name "tuned.conf"
  162  vim /etc/modprobe.d/tuned.conf
  163  cd tuned/
  164  ls
  165  vim tuned-main.conf
  166  reboot
  167  cat /proc/sys/vm/swappiness
  168  ps fax
  169  cd performance/
  170  ls
  171  ./zombie &
  172  ps aux | grep defunc
  173  kill -9 2416
  174  ps aux | grep defunc
  175  ps fax | grep -B5 2416
  176  kill -SIGCHLD 2415
  177  ps fax | grep -B5 2416
  178  kill 2415
  179  ps aux | grep defunc
  180  cd
  181  cd /usr/lib/tuned/virtual-guest/
  182  vim tuned.conf
  183  cd
  184  cd performance/
  185  ./countdown 12
  186  ls
  187  pwd
  188  history | grep git
  189  git clone https://github.com/sandervanvugt/performance
  190  vim stress1.service
  191  vim stress2.service
  192  cp stress* /etc/systemd/system/
  193  systemctl daemon-reload
  194  systemctl start stress1.service
  195  systemctl start stress2.service
  196  top
  197  cd /sys/
  198  ls
  199  cd bus
  200  ls
  201  cd cpu/
  202  ls
  203  cd devices/
  204  ls
  205  ls cpu1/
  206  online cpu1/online
  207  cat cpu1/online
  208  echo 0 > cpu1/online
  209  lscpu
  210  qtop
  211  top
  212  systemctl set-property CPUShare=8192 system.slice
  213  systemctl set-property system.slice CPUShares=8192
  214  top
  215  killall dd
  216  kill 3339
  217  top
  218  man 5 systemd.resource-control
  219  mount grep cg
  220  mount
  221  cd /sys/fs/cgroup/
  222  ls
  223  cd system.slice/
  224  ls
  225  systemctl start stress1.service
  226  systemctl start stress2.service
  227  ls
  228  cd stress1.service/
  229  ls
  230  cat memory.max
  231  cat memory.high
  232  cat cpu.weight
  233  cd ..
  234  cat stress2/cpu.weight
  235  cat stress2.service/cpu.weight
  236  man 5 systemd.resource-control
  237  cd stress2.service/
  238  echo 1000 > memory.max
  239  top
  240  journalctl
  241  cd ..
  242  cd stress1.service/
  243  echo 1000 > memory.max
  244  top
  245  systemd-cgtop
  246  systemd-cgls
  247  systemd-cgls
  248  cd
  249  systemd-cgls
  250  systemd-run --slice=exzample.slice sleep 10d
  251  systemd-cgls
  252  systemctl set-property sshd.service MemoryLimit=1M
  253  ps aux | grep ssh
  254  cat /sys/fs/cgroup/system.slice/sshd.service/memory.max
  255  top
  256  iotop
  257  time dd if=/dev/zero of=/bigfile bs=1M count=1024
  258  cd /sys/block/
  259  ls
  260  cd sda/
  261  ls
  262  cd queue/
  263  ls
  264  cat scheduler
  265  echo none > scheduler
  266  cat scheduler
  267  time dd if=/dev/zero of=/bigfile bs=1M count=1024
  268  history