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    Alert: Control Domain Memory Usage

    Scheduled Pinned Locked Moved Solved Compute
    194 Posts 21 Posters 218.2k Views 16 Watching
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    • stormiS Offline
      stormi Vates 🪐 XCP-ng Team @JCastang
      last edited by

      @jcastang It is being tested and you can join the effort: yum update intel-ixgbe --enablerepo=xcp-ng-testing. The results are very good, I just want a bit more feedback.

      J 1 Reply Last reply Reply Quote 1
      • J Offline
        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 Offline
          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.

          delafD 1 Reply Last reply Reply Quote 0
          • olivierlambertO Offline
            olivierlambert Vates 🪐 Co-Founder CEO
            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
            • delafD Offline
              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.

              delafD 1 Reply Last reply Reply Quote 0
              • delafD Offline
                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
                • stormiS Offline
                  stormi Vates 🪐 XCP-ng Team
                  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.

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

                    @stormi oh I did not know that as I never use it: I only know that it exists 😉

                    delafD 1 Reply Last reply Reply Quote 0
                    • delafD Offline
                      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

                      delafD 1 Reply Last reply Reply Quote 1
                      • delafD Offline
                        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
                        • stormiS Offline
                          stormi Vates 🪐 XCP-ng Team
                          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 6
                          • F Offline
                            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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