hight send data rate, but why?

[Jurph]

Hi everybody!

I just noticed today that my 2009 27'' Imac with SL is sending away a lot of data, something like 30kB/sec CONSTANTLY - meaning that it does even if I try to quit all applications.

Can somebody explain me this?

Here's a screenshot of the activity monitor, as you can see there isn't much going on, except for the hight data rate:

http://dl.dropbox.com/u/1004992/Screen shot 2012-02-12 at 17.39.33.png

 

[whiteonline]

I'm thinking it's possibly one of two things.

syncserver: process for iCloud synchronization
or
netsession_mac: p2p utility (Akamai) used by Netflix and possibly Adobe.

 

[Jurph]

thanks whiteonline, i'll check them.

 

[arpanet]

Hello,

I have a couple of suggestions using "Activity Monitor"

a) Upper right pulldown menu item: select "All Processes" rather than "My Processes"

b) Try monitoring cpu rather than network, and view traffic by first
adding message traffic to the table displayed by selecting
View->Columns, and adding "Messages Sent" and "Messages Received"

Sort on messages.

Another idea, using "Terminal" aka command line, look for connections to other places

netstat -a | less or
netstat -ar | less​

...curious to see what you find.

 

[Jurph]

it's gone now

hello arpanet.
i did what you suggested, this was what i found after a fresh boot.

I noticed that the data transfer started only when I attach an external hdd and that remembered me that I tried Crashplan some time ago, set up a backup but never bothered to start the app again since it was too slow for me. Now i checked and deleted all settings about any backup and the data transfer is gone!

probably it was a process somehow related to crashplan (the actual app wasn't running)

 

[arpanet]

Sounds like your memory may have led you to a fix! Congratulations.

Funny coincidence, I'm a regular user of Crashplan. I noticed in your screenshots that java was being run. Perhaps you can see more using the command line, via "Terminal". I am quite used to seeing the java app
associated with CrashPlan.

ps -ef | grep java
​

If you see crashplan in the list of parameters associated with that java process you're definitely onto it. Or maybe it will lead you somewhere else.

Note: Crashplan includes an Uninstall in their disk image and this is the recommended way to remove the app. If you did it by
hand, make sure to get rid of /Library/LaunchDaemons/com.crashplan.engine.plist

-Cheers