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    Alert: Control Domain Memory Usage

    Scheduled Pinned Locked Moved Solved Compute
    194 Posts 21 Posters 200.6k Views 16 Watching
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    • olivierlambertO Online
      olivierlambert Vates πŸͺ Co-Founder CEO
      last edited by

      haha that might be the answer indeed…

      1 Reply Last reply Reply Quote 0
      • J Offline
        JCastang
        last edited by

        Hello,

        Does this fix has been released or is to be released ?

        stormiS 1 Reply Last reply Reply Quote 0
        • stormiS Offline
          stormi Vates πŸͺ 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 Online
                olivierlambert Vates πŸͺ 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 πŸͺ 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 πŸ˜‰

                        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 πŸͺ 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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