On 8/29/2023 9:17 AM, Mario Emmenlauer via Cygwin wrote:
On 29.08.23 14:32, Adam Kessel via Cygwin wrote:
I've found rsync to be painfully slow on large folders -- hours to sync thousands of files, even
when they already match size and --size-only is used. It's much faster between native Linux boxes.
I've been told (on this list) that how you mount the Windows drive in Cygwin
matters.
I use this in my /etc/fstab:
d:/ /cygdrive/d ntfs binary,posix=0,user,auto,notexec 0 0
Unfortunately, it's still not as quick as I think it ought to be.
(If someone out there can recommend better settings, I'm open!)
I regularly rsync a collection of hundreds of files, each about 2Gb in size.
Windows describes the partition as an NTFS Basic Data Partition. It takes
rsync a long time to get started (i.e., to figure out which files need
transferring).
My rsync uses these flags:
rsync -avuP --partial --partial-dir=.rsync-partial --log-file=...
--log-file-format=...
I've been using rsync, unison and similar tools on Windows and Linux since basically forever. In my
humble opinion, the problem is the Windows file system performance, not the synchronization tools.
As a separate example, try to download the boost source code, and extract the archive. I can do the
extraction in way under a minute on Linux, but have to wait many many minutes on a similarly
equipped Windows machine.
Just my two cents.
Mario
Regards - Eliot Moss
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