Twitter streaming API : does the bandwidth is limited?

I would like to stream all the twitter tweets (Yes, I am crazy), in order to make some stats. I have no special permission, I am just a simple twit开发者_C百科ter user. To begin, I am just testing whether it is possible : I go on my server, it has a 100 Mbs bandwidth (I checked it is true), and I run this command :

curl -d 'track=http' http://stream.twitter.com/1/statuses/filter.json -umyuser:mypasswd | grep 'xxxxxx'

I put the 'grep' just to not have the tweets displayed and not have limitations due to displaying text on screen. Then I used 'dstat' to check the bandwidth used : it is all the time limited to 128KB/s (that is only 1Mbs). As a tweet weight is about 2K, it seems I can stream only about 64 tweets per seconds... much less than the reality (more than 1000 tweets/s I believe...). Event if I add some frequent term into the track list, The bandwidth is stuck to 128KB/s.

Do you have any idea to get the full streaming ?

Unless you have been granted the privilege, you can't access the fully unmetered firehose stream. With just basic privileges, you will be relegated to what you are doing now, using filter, or using sample (which will deliver approximately 1% of Twitter's tweet volume.)

You can try to gain elevated access by asking Twitter, however they don't seem to be handing elevated privileges out unless you can justify your use case pretty well.