root@server:~# rsync --stats --progress /var/log/mysql/* /tmp/
mariadb-bin.000040
   104863214 100%    9.88MB/s    0:00:10 (xfer#1, to-check=6/7)
mariadb-bin.000041
   104857805 100%    7.54MB/s    0:00:13 (xfer#2, to-check=5/7)
mariadb-bin.000042
   104857743 100%    7.19MB/s    0:00:13 (xfer#3, to-check=4/7)
mariadb-bin.000043
   104895064 100%    7.31MB/s    0:00:13 (xfer#4, to-check=3/7)
mariadb-bin.000044
    25448746 100%    7.58MB/s    0:00:03 (xfer#5, to-check=2/7)
mariadb-bin.000045
    85143376 100%   11.79MB/s    0:00:06 (xfer#6, to-check=1/7)
mariadb-bin.index
         204 100%    0.34kB/s    0:00:00 (xfer#7, to-check=0/7)

Number of files: 7
Number of files transferred: 7
Total file size: 530030699 bytes
Total transferred file size: 530030699 bytes
Literal data: 530066152 bytes
Matched data: 0 bytes
File list size: 108
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 530131268
Total bytes received: 145

sent 530131268 bytes  received 145 bytes  9062075.44 bytes/sec
total size is 530030699  speedup is 1.00
root@server:~#
root@server:~# rsync --stats --progress /var/log/mysql/* /tmp/
mariadb-bin.000040
   104863214 100%   10.07MB/s    0:00:09 (xfer#1, to-check=6/7)
mariadb-bin.000041
   104857805 100%    7.53MB/s    0:00:13 (xfer#2, to-check=5/7)
mariadb-bin.000042
   104857743 100%    5.98MB/s    0:00:16 (xfer#3, to-check=4/7)
mariadb-bin.000043
   104895064 100%    9.96MB/s    0:00:10 (xfer#4, to-check=3/7)
mariadb-bin.000044
    25448746 100%    6.22MB/s    0:00:03 (xfer#5, to-check=2/7)
mariadb-bin.000045
    85195617 100%   11.70MB/s    0:00:06 (xfer#6, to-check=1/7)
mariadb-bin.index
         204 100%    0.23kB/s    0:00:00 (xfer#7, to-check=0/7)

Number of files: 7
Number of files transferred: 7
Total file size: 530087882 bytes
Total transferred file size: 530087882 bytes
Literal data: 530118393 bytes
Matched data: 0 bytes
File list size: 108
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 530183513
Total bytes received: 145

sent 530183513 bytes  received 145 bytes  8910649.71 bytes/sec
total size is 530087882  speedup is 1.00
root@server:~#
root@server:~# rsync -u --stats --progress /var/log/mysql/* /tmp/
mariadb-bin.000045
    85332477 100%    7.09MB/s    0:00:11 (xfer#1, to-check=1/7)

Number of files: 7
Number of files transferred: 1
Total file size: 530254987 bytes
Total transferred file size: 85332211 bytes
Literal data: 85332477 bytes
Matched data: 0 bytes
File list size: 108
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 85343051
Total bytes received: 31

sent 85343051 bytes  received 31 bytes  6827446.56 bytes/sec
total size is 530254987  speedup is 6.21
root@server:~#