Am 13.12.24 um 17:34 schrieb Fiona Ebner: > Am 13.12.24 um 17:30 schrieb Fiona Ebner: >> + run_command(['dd', "if=$file", "bs=64k", "status=progress"], output => >> '>&'.fileno($fh)); > > ---snip--- > >> + run_command(['dd', "of=$file", 'bs=64k'], input => '<&'.fileno($fh)); > > > Forgot to mention, I did not test with different block sizes yet. This > is just copied from the LVM plugin. Will do that next week and see if > it's worth changing.
Tested between a virtual cluster with integrated Ceph (A) and another node with external Ceph (B) with a VM with a 4 GiB OS disk and 15 GiB disk full of random data. Don't see much difference, with 64K slightly winning: A -> B 16 KiB 2024-12-17 13:00:49 migration finished successfully (duration 00:02:01) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 12.67s user 42.01s system 45% cpu 2:01.29 total 2024-12-17 13:05:40 migration finished successfully (duration 00:02:01) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 12.49s user 42.34s system 45% cpu 2:00.89 total 64 KiB 2024-12-17 11:59:35 migration finished successfully (duration 00:01:56) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 12.31s user 41.10s system 45% cpu 1:57.31 total 2024-12-17 12:05:39 migration finished successfully (duration 00:01:58) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 12.07s user 41.30s system 45% cpu 1:58.00 total 256 KiB 2024-12-17 12:11:00 migration finished successfully (duration 00:02:05) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 11.29s user 37.89s system 39% cpu 2:06.03 total 2024-12-17 12:16:54 migration finished successfully (duration 00:02:07) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vmbr0 11.64s user 38.70s system 39% cpu 2:07.61 total B -> A 16 KiB 2024-12-17 13:02:47 migration finished successfully (duration 00:01:28) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 13.06s user 40.22s system 58% cpu 1:31.23 total 2024-12-17 13:07:57 migration finished successfully (duration 00:01:28) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 13.00s user 40.25s system 58% cpu 1:30.64 total 64 KiB 2024-12-17 11:56:34 migration finished successfully (duration 00:01:22) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 12.72s user 37.16s system 59% cpu 1:24.53 total 2024-12-17 12:03:15 migration finished successfully (duration 00:01:27) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 13.19s user 38.45s system 57% cpu 1:30.10 total 256 KiB 2024-12-17 12:08:10 migration finished successfully (duration 00:01:31) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 12.18s user 37.23s system 52% cpu 1:34.39 total 2024-12-17 12:14:05 migration finished successfully (duration 00:01:35) qm remote-migrate 1234 1234 --target-storage rbd --target-bridge vnet0 11.85s user 36.74s system 49% cpu 1:37.46 total _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
