Zywer

Bittorrent Sync Slow Lan Speed

Recommended Posts

Hi Y'all

 

I have used BitTorrent Sync for almost a year now, and it has worked great. I have synced hundreds of gigabytes data between Windows-Linux and Linux-Linux. The speed has been extremely high, with an upload to 60 MB/S (Default settings, encrypted data etc.). However, when i recently changed to a Windows server, everything slowed down. Now I get speeds from 100 KB/s to 2 MB/s, a big difference if you have to upload 1 TB of data.

 

My setup:

 

Both windows Pc (8,1 and Server 2008 R2)

 

BitTorrent Sync 1.3.109 with predefined hosts, disabled relay server and LAN for forced predefined, disk priority is set to high, no encryption, no limit on local peers, buffert size maxed to 99999 and everything manually port forwarded in Windows firewall

 

Connected with Cat6 cables, gigabit router and computers. I tried with the latest release of Sync, the speed spiked for a minute at 120 MB/s, then dropped to the regular speed.

 

What am I doing wrong? Appreciate ALL Help! 

Share this post


Link to post
Share on other sites

@Pilsener

To get some solution I need to find out the root cause. It may be different for different environments - most users bottleneck is the hard drive. So I suggest trying to set "hdd_low_priority" advanced preference to "false" first of all and increasing send / recv buffers size (also in advanced preferences).

Share this post


Link to post
Share on other sites

I'm experiencing the same issue.  Systems on both sides are running Server 2012.  System 1 has an 8 drive SATA 6Gb ZFS array, System 2 has a 12 drive SATA 3Gb ZFS array.  I've benched system 1 at 1.6GB/s write speeds and I'm only getting peaks of 20MB/s sync speeds.  System 2 isn't as fast but it is purely a storage server with nothing else writing to it.  Both systems have 4x 1GbE Load Balanced connections using Intel Pro/1000 NIC's.  As you suggested, I'm collecting the speed profile and will email it shortly.  I set hdd_low_priority to false as suggested which improved peaks slightly but it still is constantly dropping down to nothing.  Increased send/recv buffer size to 1000 on both sides, that didn't seem to have any effect.  

Share this post


Link to post
Share on other sites

Similar problem, although I've just made the move from Dropbox to Sync. It's extremely slow at about 500kbs - 1Mbs over LAN, and even slower over the internet. Dropbox was much faster at syncing, so I'm not sure where the bottleneck would be. I've sent my speed profiles to syncapp@bittorrent.com . Hope to hear back from you guys soon. 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.