bestsync.us

Hi there.
I recently upgraded from 2013 to 2019 (running ver 14.0.1.1).
When I do file syncs I am seeing about 10% of the files stall for about 60 seconds and then resume. This happens on either the backup of the file or the copy of the file. I am syncing WebDav to FTP. Needless to say this is very annoying as it makes what should be a quick sync into many minutes. I just synced 88 files and it took about 10 minutes!

What debugging or other info can I provide to help identify the root cause of this issue?

Thanks.
David.

This problem may be related to the response speed of the WebDAV or FTP server.
BestSync will not stall without reason.

Thanks for the quick reply.

I did not see this issue when using BestSync 2013 with the same WebDav and FTP endpoints.
There were some 'stalls' that occurred for a second or two. But never for 60s.

Again, is there some log or debug we can look at to determine the cause of these stalls.
With this issue, I consider the tool unusable.

Thanks.
David

You can start the preview of the task to see where BestSync stalls.

So seems like BestSync was in a bad state. I wanted to create a task to upload to a test area. So I did Edit/Copy an existing task but was unable to then paste. So i created a new task and after configuring each tab -- when i hit OK to save the task, BestSync crashed. When it came back up I had to re activate my license and the task i was creating did not exist. However, i was now able to copy/paste a task and a test task ran as expected uploading 98 files in about 10 seconds. I will keep an eye on this one. Thanks for your quick replies and advice.

BestSync newest version 14.0.1.6 has fixed a bug that may cause crash, please update to last version, the problem may have been fixed.

Great Post

Ah good. Thanks for the update.
I just saw it again on 14.0.1. So i uninstalled BS and then installed latest -- 14.0.1.6
Will let you know if I see this issue again. Seems like it has to run for a bit.

Hi again.
I have had 14.0.1.6 installed for a bit now and I am still seeing stalls for 60 seconds. I just did a sync of 7 files and it took nearly 5 minutes.
I am syncing between a Network share (local network) and an FTP server.
I have tried reducing the thread count to 4, thinking the FTP server was hitting max connections for the IP. but this did not help.
I tried NOT processing multiple files simultaneously, but still have the issue.
As far as I recall I started seeing this issue after upgrading from 2013

The following is in the last info in the message window when the sync was hanging one of the times. I don't see anything obvious.
=====
<150 Accepted data connection
<226-File successfully transferred
<226 0.073 seconds (measured here), 126.24 Kbytes per second
>MFMT 20200326122934 _BS8_NT2A2NLKAPLAC_24E1_0C_00_MD5_B182CCA99E981DD636D04129C2DA7A03_MNZG63ROOBUHA.BS_.php
<213 UTIME OK
>PASV
<227 Entering Passive Mode (173,247,240,143,118,30)
>RETR _BS8_NT2A2NLKAPLAC_24E1_0C_00_MD5_B182CCA99E981DD636D04129C2DA7A03_MNZG63ROOBUHA.BS_.php
<150-Accepted data connection
<150 9.2 kbytes to download
<226-File successfully transferred
<226 0.000 seconds (measured here), 97.83 Mbytes per second
=====

in contrast, a sync to S3 has no issues.

If we cannot resolve this issue, i am going to have to use a different tool.

Thanks.
David

Because the task is synchronizing with FTP server, and FTP protocol uses multiple data ports, some of the ports may be blocked by firewall or anti-virus software.
Please refer to the following pages about how to setup the firewall settings when using FTP:
http://www.risefly.com/fseqna_ftp.htm