FreeFileSync Forum

Glad to see that this conversation led to something positive for every one.

Cheers.

No problem, I understand. You just could have been a tad more tactful...

And being seen myself as and AI is a first, that was funny. :)

40G is well worth it most of the time. It would be a pity to use only 1/3 of my NAS speed.

Another metric that might be the culprit: to get 3 GB speed, I need to ...

From what Zenju wrote here, the tools themselves have no control.

Corruption can happen with some devices depending on their driver.

Click on the link Zenju posted, it's informative. Now that I have a perfect solution, it's just not worth the risk. I don't need to use 40G to write on a drive that ...

Yes, the solution is to use a 10G connection rather than my fast 40G one.

It allows to use FFS as is, without the need for unbuffered IO. It's a very elegant and simple solution.

Instead of using \\tn4\data as a source, I use \\tn\data. tn4 is 192.9.204.224 while tn is 192.9.200.224, corresponding ...

So, risky!

A very good solution will be to use my 10G LAN and FFS, it won't affect the speed copy to a regular HHD and won't trigger the cache problems being to slow(!) for that.

So simple, but it came from getting some input here.

Edit: I tried again using the 10G adapter, perfect, WinRAR does ...

Ok, that is a very reasonable reason not to consider this option.

Thanks for pointing it out, I will use different tools for long run copies.

I guess that Microsoft's Robocopy has been thoroughly validated, I will use that.

And thank you for not biting my head off, that was an unexpected reaction ...

3GB/s isn't POSSIBLE on a 10gb connection.
1) I have 10gb networking and RAID arrays capable of saturating it, unlike OP's HDD
2) 10gb is 1.25GB/s, half of what you claim to be getting onto the HDD at the beginning


You pointing my mistake (not thinking at the time of my post that I was using a ...

I just tested Goodsync that also uses buffered I/Os.

It make WinRAR stalls the same way than FFS.

That confirms previous findings.

I'm just an user reporting an issue. Whether or not it's worth addressing is of course at the discretion of the developers, I certainly have no say in that.

Just don ...

Here is why having a lot of memory does not help:

FFS uses buffered I/O. Its writes land in the Windows file cache first (dirty pages). Your HDD is slow to flush those pages, so the Lazy Writer builds a backlog.

Windows throttles globally when dirty pages pile up. The Memory/Cache manager doesn’t ...

Here:

https://e.pcloud.link/publink/show?code=XZiisUZegD223pbDAfTPmivWp3BEzCwX4c7

That's a screen cap showing 2.19GB speed when I captured it.

I was hasty about 10G, this my general lan speed. The NAS uses a dedicated 40G adapter:

https://e.pcloud.link/publink/show?code ...

Yes, there are plenty of file copy software, open-source or not. I already tried 2 that work perfectly.

But FFS is just the best overall, by so wide a margin that other stuff look pretty lame. It just seems a pity that it misses this option.

It's no problem using other software when I need it, but ...

Well, further testing shows that Chat is globally correct.

I tried making a TBs copy to an old 60MBs fast HDD. FFS first shows a 500MBs speed, that slowly drops to 60MBs. Certainly not enough to stress the system, and yet, when trying to extract a 90GB RAR archive between 2 unrelated GEN 5 SSDs ...

I am using a 10G LAN. The NAS is very fast, reads up to 3GBs. When FFS starts, it shows 2.5GBs first, and quite slowly drops to the 200MBs HHD speed.

I apologize in advance, but I think that Chat is giving me here a valid explanation.
Using AI is useful, but only with a very large grain of salt ...

Ok, forget ChatGPT.

The fact is: when FFS runs a copy from my NAS to a regular HDD at 200MBs, extracting a RAR archive from a GEN 5 SSD to another GEN 5 SSD, normally extremely fast, first stalls for 60s to the point you can't even kill it with Process Hacker if you try.

Then, after this delay, it ...

On Windows 10 with FFS 14.4 , I’ve noticed that when FreeFileSync’s real-time sync is active, extracting a large RAR archive becomes extremely slow. Without FreeFileSync, extraction streams at full NVME disk speed (hundreds of MB/s). With FreeFileSync running, the same job drops to a crawl, with a ...

That's just perfect, thank!

Hi,

Is is possible to make a mirror sync, but with not erasing the files that have been deleted on the left side before a certain amount of time.

for example, if 'file.txt' has been deleted on the left, 'file.txt' will only be deleted on the right side if the deletion is older than one week.

That ...

Great, thanks!

Hi,
I have a backup whose sync is custom, using only "Create" or copy new items to the right.
When I click on "Compare", the tabs show everything that is different.
In this case, it's actually a lot, hundreds of items, and what is really to be copied is not easy to spot.
Is there a way to remove all ...

My bad, I thought that I understood your post, and I did not!

I went on the machine hosting the network share as explained, and set up the "m1" user account that is in use on both the source and the recipient.

I also did it on the local machine running FFS.

That did not help. Worse: it erased ...

I already gave all the available permissions, full control to everyone.

Hi,

I am trying to copy a Windows 10 directory from one PC to another.

I included symlinks as "As link", I run FFS as admin, but I still get:

ERROR_PRIVILEGE_NOT_HELD: A required privilege is not held by the client. [CreateSymbolicLink]

What can I do to make it work?

Wow, that was fast!
Thanks.

Some completion dialog box have an auto-close switch.
With 11.4, even if you tick them, it's not remembered and appeared unticked the next time they are used.

I can't be more precised, it was very annoying so I went back to 11.3... which made me lost all my backups.

I had to got the directory ...

Even if start as admin (Windows 10), I get an error saying I'm not allowed to read these rights.
What am I missing?

Thanks, I did not know this was an option.

Hi,

I'm using FF 11.1 on Windows 10.

I have files on the source which are read-only, and I was expecting the mirror function to duplicate these rights.

It does not, the "deny" property in the security property tab is not set like it is on the source.

Is this a bug, a setting, intentional or just ...

I'll to try with the device tape name.
But that would not be enough: in case of a tape is detected as destination, FS should write a header with the name of the files, and when you insert the tape and click on the name of the backup, read the header and display on the right panel the name of the ...

It would be very nice if destination could be a tape device.
Of course, the range of options should be very restricted, just update without a pre-check of the destination.

Hi,

FreeFileSync is an incredible tool, I want first to thank everybody who made it.
There is just one thing that I think could be easier to do: scheduling.
Currently, correct me if I am wrong, you have to create a batch file and use the Windows scheduler.
Ideally, one should be able to right click ...

Thanks Zenju, that's interesting information.

Then, I don't know what's happening: when using a Windows file manager (xplorer2 in my case), I see sometimes files with the same size and same timestamp, and yet FFS makes a copy that is not needed.

I thought it might be a ms time discrepancy, but ...

Never mind, looking at the Daylight Saving Time link, I found out it means 2 hours!

Please consider handling seconds as a tolerance as a potential improvement for a next release: when syncing between a NAS under Linux and Windows, 2 files that seem to have the same time-stamp and size are synced ...

Hi,

I want to ignore Time Shifts less than 2 seconds when syncing.

Apparently, I cannot enter a value such as 00:00:02.

If I enter just the number 2, will it mean 2 seconds, or 2 minutes?

Hi,

First, kudos for an incredible software!

I have a suggestion for a future release: implement multipart SFTP transfers.

In this day and age of fiber access, multipart transfers can increase speed 20 times.

For example, I have a Gb Internet access, and straight download from some filesharing ...