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

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

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