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Synctoy performance bug?
I just started using Synctoy to backup some photos from one machine to
another. I started out by just telling Synctoy to "Contribute" on the "My
Pictures" folder from machine A to B. B has a bigger hard disk, so it is
where I usually store everything. But machine A is where I usually download
the pictures, since that's where the memory card reader is. Usually I delete
the older files off of machine A after a while because it runs out of space.
So machine A has 45 GB in 20,685 files under "My Pictures," and machine B
has 88 GB in 62,267 files in its copy of "My Pictures." The two machines are
connected via a 1 Gbit Ethernet connection.
Synctoy runs into a huge performance problem when it gets to the Preview
stage where it says, "Loading saved information for \\machineB\My Pictures."
I have been running Synctoy for over 1.75 hours now, and it's only about 3/4
of the way done according to the thermometer (which I don't trust, since it's
been sitting still at that point for a LONG time now). There is nearly no
network traffic, and machine A's CPUs are both nearly pegged (90%). Machine
A is no slouch in the CPU department either -- it's a 2-processor 3.4 GHz
Xeon system with 4 GB of RAM. Synctoy is using 123 MB of RAM, which, while a
lot, is certainly not enough to make the system swap to disk. I'm running
Synctoy 1.4.0.0 under WinXP SP2.
Is someone using an O(n^2) algorithm in Synctoy, which just blows up in
execution time when you throw 50,000 files at it? What's going on? This
kind of performance is way too bad to be tolerable.
Thanks for any suggestions...
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