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    Solved Alert: Control Domain Memory Usage

    Compute
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    • J
      JCastang @stormi last edited by

      @stormi Ok, I will update one of our pools and get some results.

      1 Reply Last reply Reply Quote 1
      • J
        JCastang @delaf last edited by

        @delaf Can you point me the tool you are using to get memory graphs ? (I want to check my upgraded pool).
        I was searching in Advance live Telemetry with no luck.

        delaf 1 Reply Last reply Reply Quote 0
        • olivierlambert
          olivierlambert Vates πŸͺ Co-Founder🦸 CEO πŸ§‘β€πŸ’Ό last edited by

          Netdata will only give you the last hour.

          If you want longer metrics, you need to send the data in Prometheus/Grafana.

          1 Reply Last reply Reply Quote 1
          • delaf
            delaf @JCastang last edited by

            @jcastang we are using a netdata/prometheus/grafana stack.

            @olivierlambert you can change the retention method and keep much more data on netdata. There is also (since netdata 1.18 i think) a dbengine that allows you to store data on disk.

            delaf 1 Reply Last reply Reply Quote 0
            • delaf
              delaf @delaf last edited by

              PS: we are not using the netdata config from "Advanced telemetry": we are installing our own netdata config.

              1 Reply Last reply Reply Quote 0
              • stormi
                stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by

                dbengine is a bit dangerous on dom0. There used to be a bug where it would keep growing forever, so I don't trust it anymore.

                delaf 1 Reply Last reply Reply Quote 0
                • delaf
                  delaf @stormi last edited by

                  @stormi oh I did not know that as I never use it: I only know that it exists πŸ˜‰

                  delaf 1 Reply Last reply Reply Quote 0
                  • delaf
                    delaf @delaf last edited by

                    @stormi Hello, some week after, I can confirm that the problem is solved here by using intel-ixgbe.x86_64@5.5.2-2.1.xcpng8.1 or intel-ixgbe.x86_64@5.5.2-2.1.xcpng8.2

                    delaf 1 Reply Last reply Reply Quote 1
                    • delaf
                      delaf @delaf last edited by

                      PS: i'm using these 2 scripts to list all interfaces drivers version accross our servers :

                      $ cat get_network_drivers_info.sh
                      #!/bin/bash                                                                                                                                                                                                                                                                                                   
                      
                      format="| %-13.13s | %-20.20s | %-20.20s | %-10.10s | %-7.7s | %-10.10s | %-30.30s | %-s \n"
                      printf "${format}" "date" "hostname" "OS" "interface" "driver" "version" "firmware" "yum"
                      printf "${format}" "----------------------------" "----------------------------" "----------------------------" "----------------------------" "----------------------------" "----------------------------" "----------------------------" "----------------------------"
                      
                      if [ $# -gt 0 ]; then
                          servers=($(echo ${BASH_ARGV[*]}))
                      else
                          servers=($(cat host.json | jq -r '.[] | .address' | egrep -v "^192.168.124.9$"))
                      fi
                      
                      for line in ${servers[@]}; do
                          scp get_network_drivers_info.sh.tpl ${line}:/tmp/get_network_drivers_info.sh  > /dev/null 2>&1;
                          ssh -n ${line} bash /tmp/get_network_drivers_info.sh 2> /dev/null;
                          if [ $? -ne 0 ]; then
                              echo "${line} fail" >&2
                          fi
                      done
                      
                      $ cat get_network_drivers_info.sh.tpl
                      #!/bin/bash                                                                                                                                                                                                                                                                                                   
                      
                      format="| %-13.13s | %-20.20s | %-20.20s | %-10.10s | %-7.7s | %-10.10s | %-30.30s | %-s \n"
                      d=$(date '+%Y%m%d-%H%M')
                      name=$(hostname)
                      cd  /sys/class/net/
                      for interface in $(ls -l /sys/class/net/ | awk '/\/pci/ {print $9}'); do
                          version=$(ethtool -i ${interface} | awk '/^version:/ {$1=""; print}')
                          firmware=$(ethtool -i ${interface} | awk '/^firmware-version:/ {$1=""; print}')
                          driver=$(ethtool -i ${interface} | awk '/^driver:/ {$1=""; print}')
                          YUM=$(which yum)
                          if [ $? -eq 0 ]; then
                              packages=$(yum list installed | awk '/ixgbe/ {print $1"@"$2}' | tr '\n' ',')
                          else
                              packages="NA"
                          fi
                          os_version=$(lsb_release -d | awk '{$1=""} 1' | sed 's/XenServer/XS/; s/ (xenenterprise)//; s/release //')
                          printf "${format}" "${d}" "${name}" "${os_version}" "${interface}" "${driver}" "${version}" "${firmware}" "${packages}"
                      done
                      

                      PS: host.json file is generated via : xo-cli --list-objects type=host

                      1 Reply Last reply Reply Quote 1
                      • stormi
                        stormi Vates πŸͺ XCP-ng Team πŸš€ last edited by stormi

                        FYI, I have just published security updates today PLUS the fixed ixgbe driver as an official update to XCP-ng 8.1 and 8.2.

                        We made it. This is the end of this huge thread.

                        A big thank you to everyone involved in debugging the issue.

                        And this is not a 🐟 :D.

                        1 Reply Last reply Reply Quote 5
                        • F
                          frankz last edited by

                          Its not solving it, but you can run

                          echo 3 > /proc/sys/vm/drop_caches

                          to release some of the cache again, without interfering with running processes.

                          [root@host2 ~]# free -m
                          total used free shared buff/cache available
                          Mem: 15958 3308 158 8 12491 2355
                          Swap: 1023 177 846
                          [root@host2 ~]# echo 3 > /proc/sys/vm/drop_caches
                          [root@host2 ~]# free -m
                          total used free shared buff/cache available
                          Mem: 15958 3308 2598 10 10051 2751
                          Swap: 1023 177 846

                          1 Reply Last reply Reply Quote 0
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