SQL Azure sync service-- absurdly slow and fails after a few days

Hello. We have been trying to use Azure Data Sync to replicate an on-premise MSSQL database to an SQL Azure database for read-only access by a customer. This was working for a while, but stopped syncing after a couple months(12hr auto-sync schedule) with
no errors in the log. I had to re-create the sync group, but now it takes even longer than originally to try to sync, and never actually completes, as it gets interrupted by bi-weekly server restarts... It used to take a few hours to sync the new data in our
database(which is appended to daily)-- but this time it fails after 4+ days... It was unacceptably slow initially(IMO), but now it's clearly unusable. The original initialization of the data when I first set it up was less than 2 days of syncing.
It seems there is a throttle on the Azure sync service. Is this true? Would it be best to clear the SQL Azure database now and re-sync? Is there a way to pre-load the SQL Azure database with MSSQL on-premise data via a SQL backup file or something?
Please advise. Thank you.

when you re-created the sync group, does the member databases/hub database have pre-existing data?
when synching a sync group for the first time, make sure databases don't contain the same set of data, otherwise, you will run into conflicts which will completely slow down your sync...
I deleted the initial sync group because it wasn't syncing(auto or on-demand), nor creating a log entry with an error indicating why.
So, I simply deleted the sync group and re-created it with the same exact databases and settings. I did not delete all data in the SQL Azure database-- I was under the assumption that the sync service, with the tracking tables were smart enough to not get
confused with pre-existing data, but apparently that's not how this works?
I obviously can't delete the data in the source database(MSSQL on-premise), but I could delete the tables in the SQL Azure database if that's supposed to fix the problem-- then we'll just have to wait multiple days for it to be completely re-initialized,
hopefully without error... Is there a way to seed the data in some way to prevent this extremely log first sync?
Thank you for your help.

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2005-09-05 15:27:57.796: Attempting to start `ora.gandlake-db2.ASM2.asm` on member `gandlake-db2`
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Ivan Sanders My LinkedIn Profile,
My Blog,
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EtreCheck version: 2.0.6 (91)
Report generated October 24, 2014 at 12:07:13 GMT+3
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MacBook Air (13-inch, Mid 2012) (Verified)
MacBook Air - model: MacBookAir5,2
1 2 GHz Intel Core i7 CPU: 2-core
8 GB RAM Not upgradeable
BANK 0/DIMM0
4 GB DDR3 1600 MHz ok
BANK 1/DIMM0
4 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en0: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1440 x 900
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 0:15:57
Disk Information: ℹ️
APPLE SSD SM256E disk0 : (251 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
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Apple Inc. FaceTime HD Camera (Built-in)
Apple Internal Memory Card Reader
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
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/Applications/Parallels Access.app
[loaded] com.parallels.virtualsound (1.0.27 27 - SDK 10.6) Support
/Applications/Parallels Desktop.app
[not loaded] com.parallels.kext.hidhook (9.0 24251.1052177) Support
[not loaded] com.parallels.kext.hypervisor (9.0 24251.1052177) Support
[not loaded] com.parallels.kext.netbridge (9.0 24251.1052177) Support
[not loaded] com.parallels.kext.usbconnect (9.0 24251.1052177) Support
[not loaded] com.parallels.kext.vnic (9.0 24251.1052177) Support
/Library/Extensions
[not loaded] org.virtualbox.kext.VBoxDrv (4.2.4) Support
[not loaded] org.virtualbox.kext.VBoxNetAdp (4.2.4) Support
[not loaded] org.virtualbox.kext.VBoxNetFlt (4.2.4) Support
[not loaded] org.virtualbox.kext.VBoxUSB (4.2.4) Support
Startup Items: ℹ️
VirtualBox: Path: /Library/StartupItems/VirtualBox
Startup items are obsolete and will not work in future versions of OS X
Launch Agents: ℹ️
[invalid?] com.cisco.anyconnect.gui.plist Support
[invalid?] com.oracle.java.Java-Updater.plist Support
[running] com.parallels.mobile.prl_deskctl_agent.launchagent.plist Support
[invalid?] com.teamviewer.teamviewer.plist Support
[invalid?] com.teamviewer.teamviewer_desktop.plist Support
[loaded] org.macosforge.xquartz.startx.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[running] com.cisco.anyconnect.vpnagentd.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[invalid?] com.oracle.java.Helper-Tool.plist Support
[running] com.parallels.mobile.dispatcher.launchdaemon.plist Support
[loaded] com.parallels.mobile.kextloader.launchdaemon.plist Support
[loaded] com.teamviewer.Helper.plist Support
[invalid?] com.teamviewer.teamviewer_service.plist Support
[loaded] org.macosforge.xquartz.privileged_startx.plist Support
User Launch Agents: ℹ️
[loaded] com.google.keystone.agent.plist Support
[running] com.microsoft.LaunchAgent.SyncServicesAgent.plist Support
[running] com.parallels.mobile.startgui.launchagent.plist Support
[not loaded] org.virtualbox.vboxwebsrv.plist Support
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Moveslink2 Application (/Applications/Moveslink2.app)
Quicksilver Application (/Applications/Quicksilver.app)
Google Drive Application (/Applications/Google Drive.app)
Google Chrome ApplicationHidden (/Applications/Google Chrome.app)
Dropbox UNKNOWN (missing value)
EvernoteHelper Application (/Applications/Evernote.app/Contents/Library/LoginItems/EvernoteHelper.app)
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SharePointBrowserPlugin: Version: 14.1.3 - SDK 10.6 Support
FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
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Google Earth Web Plug-in: Version: 7.1 Support
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AdBlock
OpenIE
Facebook Photo Zoom
Translate
1-ClickWeather
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Flash Player Support
Flip4Mac WMV Support
Time Machine: ℹ️
Time Machine not configured!
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      1% fontd
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Top Processes by Memory: ℹ️
180 MB Google Drive
86 MB mds_stores
86 MB SyncServicesAgent
86 MB Google Chrome
86 MB Finder
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2.25 GB Free RAM
2.84 GB Active RAM
2.56 GB Inactive RAM
936 MB Wired RAM
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You appear to have empty catch blocks. Which means you don't get the error message that would tell you what is failing.
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My MacBookPro is less than 3 months old and for the last few days, it has been itslow to load anything, especially web pages. I get the rainbow swirl when loading or reloading. I guess I am spoiled. Up until now it was lightening fast!

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Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
http://www.etresoft.com/etrecheck
Etrecheck will be in your Downloads folder. Open it from there. You may see the following dialog box:
Click Open - etresoft contributes to this forum frequently and can be considered a trustworthy developer.
It will take a moment to run as it collects its data.
Copy and paste its output in a reply.
Do not be concerned about anything that says "Problem" or "failed".
EtreCheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.

SQL Azure sync service-- absurdly slow and fails after a few days

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