What application is using my bandwidth???

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Level 1

9 points

What application is using my bandwidth???

I am using iSlayer to monitor several functions (Overall health) of my Mac. It is telling me that "something" is uploading a ton of data from my system! It is consistently at 38-44kbps! Either something is pushing data out, or someone on the outside is pulling data our of my Mac.

Are there any tools to tell me WHAT application is using that bandwidth? I have searched the web only to find tools which tell me what I already know. Anyone know of something that can list/log what applications are accessing the network and pulling/pushing data?

Thanks!

iMac 2.16Ghz Core2Duo 20" + iMac mini 1.8Ghz Core2Duo + MacBook 2Ghz Core2Duo, Mac OS X (10.6.2), and of course I have an iPhone!

Posted on Feb 9, 2010 8:42 AM

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Answer 1

AJ

Level 5

7,075 points

Feb 9, 2010 10:00 AM in response to MJSTEELEGA

Start with activity monitor, all processes, all users.

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Answer 2

MJSTEELEGA Author

Level 1

9 points

Feb 9, 2010 10:45 AM in response to AJ

So where in Activity Monitor does it show you what bandwidth is being sent by a particular application? I see CUP %, threads, memory... but no where does it indicate what application is actually using the network, and if so, how many packets.

I am trying to find "the culprit" that is eating up my bandwidth. Since last reboot (yesterday), something has transferred almost 3Gb, and it is still going at 42-44kbs.

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Answer 3

cwog

Level 1

98 points

Feb 9, 2010 11:32 AM in response to MJSTEELEGA

Are you doing any syncing of to Mobileme eg transferring stuff to the iDisk or picking up software updates in advance of telling you that the new version is ready to be installed.

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Answer 4

MJSTEELEGA Author

Level 1

9 points

Feb 9, 2010 11:37 AM in response to cwog

I've checked all my sync'ing stuff. iDisk is up-to-date and there is no sync'ing going on with iSync. plus, what bothers me the most, it this is data LEAVING my compter. So I am worrying a bit. However, I just put it an Airport Extreme and enabled WPA2 so I am confident no one else has infiltrated my network.

I do use Crashplan.com for off-site backup, but I have it turned off at the moment.

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Answer 5

varjak paw

Level 10

170,200 points

Feb 9, 2010 11:42 AM in response to MJSTEELEGA

You could try Little Snitch. That should tell you what's trying to connect. The download gives you a three-hour trial which should be enough to determine what's sending out data, and you can decide later whether you find "Snitch" to be useful enough to keep.

Hope this helps.

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Answer 6

MJSTEELEGA Author

Level 1

9 points

Feb 9, 2010 12:51 PM in response to varjak paw

Wow... THANK YOU. Little Snitch is exactly what I was looking for. Found the culprit within 5 minutes.

For those curious, it was my Crashplan.com backup. I had a 1.4GB file it was trying to backup. Now I have to figure out why it was running when I had it disabled!

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Answer 7

varjak paw

Level 10

170,200 points

Feb 9, 2010 1:02 PM in response to MJSTEELEGA

Glad you got it sorted. Cheers.

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Answer 8

AJ

Level 5

7,075 points

Feb 13, 2010 2:51 PM in response to MJSTEELEGA

activity monitor doesn't show bandwidth, but since t does show whats running, though perhaps you could do some process of elimination to help locate the actual culprit.

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Answer 9

Mar 9, 2010 5:00 AM in response to AJ

Actually it does.

Check the Network TAB....

HTH
Jason

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