Any reason to use dsync flag ?

Do you have a real workload to test with ?

Best Regards,
Strahil Nikolov


В 10:29 +0000 на 25.11.2020 (ср), Harry O написа:
> Unfortunately I didn't get any improvement by upgrading the network.
> 
> Bare metal (zfs raid1 zvol):
> dd if=/dev/zero of=/gluster_bricks/test1.img bs=1G count=1
> oflag=dsync
> 1+0 records in
> 1+0 records out
> 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 15.6471 s, 68.6 MB/s
> 
> Centos VM on gluster volume:
> dd if=/dev/zero of=/test12.img bs=1G count=1 oflag=dsync
> 1+0 records in
> 1+0 records out
> 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 36.8618 s, 29.1 MB/s
> 
> Does this performance look normal?
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