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    Very slow cloning speed on specific model

    Scheduled Pinned Locked Moved Solved
    FOG Problems
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    • Tom ElliottT
      Tom Elliott @DeRo93
      last edited by

      @DeRo93 In what Mode is the drive being read to the system? From BIOS you may find something like SATA Operation.

      Can you change this to AHCI and see if this helps improve the speeds a bit? Maybe change to ATA - IDE if it’s available?

      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG! Get in contact with me (chat bubble in the top right corner) if you want to join in.

      Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

      Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

      D Q 2 Replies Last reply Reply Quote 0
      • D
        DeRo93 @Tom Elliott
        last edited by

        @Tom-Elliott HP UEFI does not have AHCI - IDE Options in their UEFI Setup 😞
        HP says AHCI is activated by default on newer Models.

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        • Q
          Quazz Moderator @Tom Elliott
          last edited by

          @Tom-Elliott As far as I understand, this problem is occurring specifically on NVME SSDs

          1 Reply Last reply Reply Quote 1
          • D
            Duncan
            last edited by

            Did anyone get this working?

            I have a large batch of the EliteBook 840 G6.

            Some of which build and other are extremely slow.

            Looks like my batch has 2 versions or firmware versions.

            The one that works is “Toshiba KXG60ZNV256G 79VA215DKRVN” and the other is the same drive but an older firmware by the looks of it.

            Im in contact with HP to see about getting a firmware updater…

            1 Reply Last reply Reply Quote 1
            • D
              Duncan
              last edited by

              Littlwe update.

              So i swapped SSD out of a “slow” building laptop into a “working full speed” laptop.

              So i thought the working laptop would now build slow, well it didnt. Building at full speed.

              The other laptop with the SSD from the original full speed laptop is still building slow.

              So maybe its not SSD related, but something on the motherboard?

              Q 1 Reply Last reply Reply Quote 1
              • Q
                Quazz Moderator @Duncan
                last edited by

                @Duncan Are the BIOS versions the same on these laptops? Settings too?

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                • D
                  Duncan @Quazz
                  last edited by

                  @Quazz

                  Yes, iv updated to the latest 01.03.03 Rev.A, and my tech guys setup all the BIOS in the same way.

                  Im going to rip through the 2 laptops and reset BIOS, then make sure all settings are duplicated.

                  Going to see if i can pull some more hardware info and see if there are any differences there…

                  Q 1 Reply Last reply Reply Quote 0
                  • Q
                    Quazz Moderator @Duncan
                    last edited by

                    @Duncan Perhaps they are using different NVME controllers for some reason. Should be interesting to check it out at least.

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                    • D
                      Duncan @Quazz
                      last edited by

                      @Quazz This is what im starting to think, be back with some findings soon

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                      • D
                        Duncan
                        last edited by

                        Running HWInfo im failing to see any differences between the 2 laptops. Even in the BIOS all settings and hardware info look the same…

                        1 Reply Last reply Reply Quote 0
                        • S
                          Sebastian Roth Moderator
                          last edited by Sebastian Roth

                          @Duncan Can you schedule debug deploy task on both machines. When you get to the shell run lspci -nn and hdparm -i /dev/sda. Take pictures and post here.

                          Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                          Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

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                          • D
                            Duncan @Sebastian Roth
                            last edited by Duncan

                            @Sebastian-Roth

                            alt text
                            alt text

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                            • Q
                              Quazz Moderator
                              last edited by

                              For some reason this reminded me of some of the earliest (and most explored) reports on slow deployments on certain system drive combinations.

                              https://github.com/Thomas-Tsai/partclone/issues/112

                              That user notes that if a partition is formatted and mounted on the target disk just prior to restore that it runs at expected speeds (but in FOS only if it’s not NTFS for whatever reason). Next attempt to restore will be slow again unless the same step is taken.

                              They then went on to try a different drive (different brand) and that one worked normally.

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                              • S
                                Sebastian Roth Moderator
                                last edited by Sebastian Roth

                                @Duncan Thanks for the pictures. Though I think it was such a great idea because comparing the two listings as pictures is very much error prone. I reckon both listings are identical but can’t say for sure absolutely. And even then we still don’t know if one model might have just a slightly different revision of some component.

                                Is it only writing to disk or also reading from disk? Even if it doesn’t make sense for you to capture from the “slow” model, can you still give it a try to see!?

                                Also I wonder if you could live boot some Linux CD/DVD distro and do write/read tests as well.

                                dd if=/dev/zero of=/dev/nvme...
                                dd if=/dev/nvme... of=/dev/null
                                

                                NOTICE: Be aware the first command will completely destroy the data on your drive!! Only do this on machines you don't have valuable data on and can re-image again.

                                Did you get to talk to HP about this issue? What do they say?

                                Web GUI issue? Please check apache error (debian/ubuntu: /var/log/apache2/error.log, centos/fedora/rhel: /var/log/httpd/error_log) and php-fpm log (/var/log/php*-fpm.log)

                                Please support FOG if you like it: https://wiki.fogproject.org/wiki/index.php/Support_FOG

                                george1421G D 2 Replies Last reply Reply Quote 0
                                • george1421G
                                  george1421 Moderator @Sebastian Roth
                                  last edited by

                                  @Sebastian-Roth I realize we are discussion nvme drives here and only for a point of reference, but in 2017 I created a benchmark post to compare the differences in different technologies (one being disk subsystem) and its impact on imaging. https://forums.fogproject.org/topic/10459/can-you-make-fog-imaging-go-fast/6

                                  From there I had these two commands:

                                  … the simple disk baseline I’m using the following linux command to create a sequential 1GB file on disk and then to read it back. This process is designed to simulate the single unicast workload. The command used to write the 1GB file is this:
                                  dd if=/dev/zero of=/tmp/test1.img bs=1G count=1 oflag=direct
                                  The command to read it back is:
                                  echo 3 | tee /proc/sys/vm/drop_caches && time dd if=/tmp/test1.img of=/dev/null bs=8k
                                  The echo command is intended to disable the read cache so we get a true read back value.

                                  Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                  1 Reply Last reply Reply Quote 1
                                  • D
                                    Duncan @Sebastian Roth
                                    last edited by Duncan

                                    @Sebastian-Roth

                                    root@ubuntu:/home/ubuntu# dd if=/dev/nvme0n1 of=/dev/null
                                    500118192+0 records in
                                    500118192+0 records out
                                    256060514304 bytes (256 GB, 238 GiB) copied, 231.216 s, 1.1 GB/s
                                    root@ubuntu:/home/ubuntu# dd if=/dev/zero of=/dev/nvme0n1
                                    dd: writing to '/dev/nvme0n1': No space left on device
                                    500118193+0 records in
                                    500118192+0 records out
                                    256060514304 bytes (256 GB, 238 GiB) copied, 2204.34 s, 116 MB/s
                                    

                                    I’ve emailed my guy at HP and will see what they say.

                                    Going to upload from “slow” laptop now and see what speeds i get.

                                    Q george1421G 2 Replies Last reply Reply Quote 0
                                    • Q
                                      Quazz Moderator @Duncan
                                      last edited by

                                      @Duncan Please replace the dots with the appropriate ending for the drive. (eg 0n1) and try again.

                                      1 Reply Last reply Reply Quote 0
                                      • george1421G
                                        george1421 Moderator @Duncan
                                        last edited by george1421

                                        @Duncan Unless the "no space on device’ is causing this number disparity you have 1GB/s read and 116MB/s write speeds. The 116MB/s write speeds is just faster than a fast rotating disk speed. Those numbers are using a commercial linux distribution. (Please state the version number of ubuntu live you used)

                                        I’m wondering now 2 things.

                                        1. If you booted into FOS Linux in debug mode and ran the same commands would you see similar results?
                                        2. I know there is no correlation with this, but if you booted into windows and then ran a tool like Crystal Disk Mark or ATTO to see if we have this wide differences between read and write speeds? Now this will be using the windows kernel and windows driver. This way we can see if its a windows/linux driver issue or if the hardware just performs this way.

                                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                                        Q D 2 Replies Last reply Reply Quote 0
                                        • Q
                                          Quazz Moderator @george1421
                                          last edited by

                                          @george1421 Regardless, partclone is much slower for him than even this dd test. In the github issue thread I linked, they hypothesize that dd uses O_DIRECT and partclone does not, hence the difference.

                                          It’s also worth noting that they had better speeds when the target was mounted, which live Ubuntu does automatically when it can.

                                          Of course this is working under the assumption that it’s the exact same issue.

                                          1 Reply Last reply Reply Quote 1
                                          • D
                                            Duncan @george1421
                                            last edited by

                                            @george1421

                                            “no space on device” will i try to format the ssd and run tests again?

                                            I will quickly build windows off usb and test.

                                            The Linux was just Ubuntu 18.04.3 LTS, used Rufus to put it onto a USB and live booted.

                                            Will i try the same test with a “working” laptop and see if we get the same speeds.

                                            george1421G 1 Reply Last reply Reply Quote 1
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