On 01/27/2014 04:14 AM, Konstantinos Skarlatos wrote:
Hello, i am using btrfs send to copy a snapshot to another btrfs
filesystem on the same machine, and it has a maximum speed of
30-35MByte/sec.
Incredibly rsync is much faster, at 120-140MB/sec. Source btrfs is a
5x2TB raid 0 and target is 1x4TB.
mount options: rw,noatime,compress-force=zlib,space_cache
kernel is linux-3.13.0-rc6-git and btrfs tools is built from git at
about the same time linux-3.13.0-rc6 was released
I just sent a patch titled
[PATCH] Btrfs: only process as many file extents as there are refs
that should make this better. Also you are giving throughput but not
actual times. How much time does it take to do a send vs an rsync. We
may be sending less info across and therefore be done faster but at
lower rates than rsync. Before this patch rsync won in my test case but
only barely, and with this patch I'm 3 times faster than rsync even
though I bet it's getting better throughput. Thanks,
Josef
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
