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    synologic

    @synologic

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    Best posts made by synologic

    • RE: Extrlemy slow backup speec = about few MB/s

      Ok, upgrading to the latest version worked. Thank you.

      I see some improvements in the backup speed like:

      • from xcp 8.1 - no compression - about 33 MiB/s
      • from xcp 8.1 - compression (zstd) about 15 MiB/s

      both are up from about 4 MiB/s

      However, i am also seeing vast improvements when backing up from XCP 8.0.0 with transfer speeds (as reported by iptraf-ng) going up to 700 Mbps, which was not happening before.

      Viorel

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Hi all,

      i'm faced with the same issue:

       TestVM (redfour) 
       Snapshot 
      Start: Jan 13, 2020, 10:13:51 PM
      End: Jan 13, 2020, 10:13:56 PM
       Local iSCSI 
       transfer 
      Start: Jan 13, 2020, 10:13:56 PM
      End: Jan 13, 2020, 10:17:18 PM
      Duration: 3 minutes
      Size: 813.17 MiB
      Speed: 4.03 MiB/s
      Start: Jan 13, 2020, 10:13:56 PM
      End: Jan 13, 2020, 10:17:18 PM
      Duration: 3 minutes
      Start: Jan 13, 2020, 10:13:51 PM
      End: Jan 13, 2020, 10:17:19 PM
      Duration: 3 minutes
      

      where the backup volume is served on iscsi by a machine having raid5 over 1 Gbps back to back connection to the hypervisor.

      Mouting that volume in the hypervisor and doing some transfers, traffic easily goes up and beyond 800 Mbps whereas the backups takes forever to execute.

      I am uzing zstd as compression and xcp-ng 8.0 on the hypervisor

      One thing i noticed is that xo-server takes 100-130% cpu when the backup is executing.
      The vm above is about 2gb uncompressed, however larger VMs take over 8 hours to complete a normal backup, nothing fancy.

      Thanks,
      Viorel

      posted in Xen Orchestra
      S
      synologic

    Latest posts made by synologic

    • RE: Extrlemy slow backup speec = about few MB/s

      Ok, upgrading to the latest version worked. Thank you.

      I see some improvements in the backup speed like:

      • from xcp 8.1 - no compression - about 33 MiB/s
      • from xcp 8.1 - compression (zstd) about 15 MiB/s

      both are up from about 4 MiB/s

      However, i am also seeing vast improvements when backing up from XCP 8.0.0 with transfer speeds (as reported by iptraf-ng) going up to 700 Mbps, which was not happening before.

      Viorel

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Will update right away to the latest version and test.

      Thanks

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Hi All,

      after re-creating the backup task, i get the following message in the failed task:

      RevDNS (redthree)
      Snapshot
      Start: Feb 7, 2020, 12:00:00 AM
      End: Feb 7, 2020, 12:00:00 AM
      Error: MESSAGE_REMOVED()
      Start: Feb 7, 2020, 12:00:00 AM
      End: Feb 7, 2020, 12:00:00 AM
      Duration: a few seconds
      Error: MESSAGE_REMOVED()

      If there's any other log sources that may provide more insight, i'd be happy to take a look

      Thanks

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Any ETA on an updated xen orchestra that will support the 8.1 (beta).
      I just upgraded a spare host to see if the backup speed has improved, but no luck, backups won't run so i'm guessing we need an updated version 🙂

      Merci,
      Viorel

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Hi Olivier,

      yeap, xo from sources installed in mid december, so fairly new.

      It's running on a VM with 4 vCPUS of xeon x5355 @ 2.66 Ghz

      posted in Xen Orchestra
      S
      synologic
    • RE: Extrlemy slow backup speec = about few MB/s

      Hi all,

      i'm faced with the same issue:

       TestVM (redfour) 
       Snapshot 
      Start: Jan 13, 2020, 10:13:51 PM
      End: Jan 13, 2020, 10:13:56 PM
       Local iSCSI 
       transfer 
      Start: Jan 13, 2020, 10:13:56 PM
      End: Jan 13, 2020, 10:17:18 PM
      Duration: 3 minutes
      Size: 813.17 MiB
      Speed: 4.03 MiB/s
      Start: Jan 13, 2020, 10:13:56 PM
      End: Jan 13, 2020, 10:17:18 PM
      Duration: 3 minutes
      Start: Jan 13, 2020, 10:13:51 PM
      End: Jan 13, 2020, 10:17:19 PM
      Duration: 3 minutes
      

      where the backup volume is served on iscsi by a machine having raid5 over 1 Gbps back to back connection to the hypervisor.

      Mouting that volume in the hypervisor and doing some transfers, traffic easily goes up and beyond 800 Mbps whereas the backups takes forever to execute.

      I am uzing zstd as compression and xcp-ng 8.0 on the hypervisor

      One thing i noticed is that xo-server takes 100-130% cpu when the backup is executing.
      The vm above is about 2gb uncompressed, however larger VMs take over 8 hours to complete a normal backup, nothing fancy.

      Thanks,
      Viorel

      posted in Xen Orchestra
      S
      synologic