On Tue, 2008-08-26 at 15:02 +0200, Peter P GMX wrote: > does nobody has a clue about this?
As Paul said, the bottleneck appears to be disk I/O rather than network bandwidth, so you should not expect any speedup from the delta-transfer algorithm. (Even though only 3% of the data differs, rsync needs to read the entire source and destination images from disk to determine that.) --inplace and/or --whole-file might help reduce the disk I/O. Matt > Peter P GMX schrieb: > > Hello Paul, > > > > here is the status of the transfer. > > If I understand it right, about 3% of the data was changed (literal > > data against matched data). It took about 1h40min to transfer ~250MB > > of data. > > But to be honest, I do not get a real clue out of this status report. > > E.g. Laptop_D_10GB.vdi takes around 25 minutes to be transferred with > > 6,74MBytes/sec. If I divide 10G by 6,74MBytes/sec (for a complete file > > transfer) I end up at 40 minutes. So almost half of the complete data > > transfer time of this volume is needed, although this drive is rather > > passive and there were almost no changes on the drive between the last > > sync. (The machines are a AMD X2 3800 on one originating side and a > > Atom 1,6GHz on the destination side, Atom pulls from AMDs side). > > > > Best regards > > Peter > > > > receiving file list ... > > 13 files to consider > > mit_backup/Debian40.vdi > > 1395660800 100% 5.66MB/s 0:03:55 (xfer#1, to-check=11/13) > > mit_backup/Laptop_D_10GB.vdi > > 10734313984 100% 6.74MB/s 0:25:19 (xfer#2, to-check=10/13) > > mit_backup/RubyServer_1_9GB.vdi > > 2039489024 100% 8.15MB/s 0:03:58 (xfer#3, to-check=8/13) > > mit_backup/XXXX_web.vdi > > 2874171904 100% 6.17MB/s 0:07:24 (xfer#4, to-check=7/13) > > mit_backup/Ubuntu_8_04_Development.vdi > > 4367340032 100% 6.80MB/s 0:10:12 (xfer#5, to-check=6/13) > > mit_backup/Ubuntu_XXXX_3GB.vdi > > 3221238272 100% 5.61MB/s 0:09:07 (xfer#6, to-check=5/13) > > mit_backup/W2000_6GB.vdi > > 6442476032 100% 7.49MB/s 0:13:39 (xfer#7, to-check=4/13) > > mit_backup/XXXXXXXX.vdi > > 4294984192 100% 8.05MB/s 0:08:28 (xfer#8, to-check=3/13) > > > > Number of files: 13 > > Number of files transferred: 8 > > Total file size: 47.710.416.177 bytes > > Total transferred file size: 35.369.674.240 bytes > > Literal data: 1.181.132.240 bytes > > Matched data: 34.188.542.000 bytes > > File list size: 530 > > File list generation time: 0.001 seconds > > File list transfer time: 0.000 seconds > > Total bytes sent: 3.984.972 > > Total bytes received: 249.776.322 > > > > sent 3.984.972 bytes received 249.776.322 bytes 41515.14 bytes/sec > > total size is 47.710.416.177 speedup is 188.01
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