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    Solved Alert: Control Domain Memory Usage

    Compute
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    • 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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