Re: first test of setup .. what is wrong here

[Harry Putnam <reader@newsguy.com>]

Colin Percival <cperciva@tarsnap.com>
writes:

> On 06/29/11 21:12, Harry Putnam wrote:
>> Less than 800 mb.  My command line:
>> 
>>    tarsnap -c -f test lc_dir
>> 
>> It's been running for over 10 minutes so far.  Judging by the flickering
>> light on network activity icon. It appears to be running.
>
> Ok, so what's the problem?

First off, thanks for you helpful input, but in answer to your question:

er ... it's too slow.  OOPs.. I mean its WAY too slow.

[...]

>> I have a cable modem with comcast and normally have fairly fast
>> up/down loading.
>
> Cable modems typically upload at between 512 kbps and 2 Mbps; for 800 MB
> of data, that works out to between 50 minutes and 4 hours.  Not surprising
> that your archive hasn't completed in 12 minutes...

I just tested mine (and that is with a tarsnap upload already
running), at comcast's online test site:
http://business.comcast.com/internet/speed-comparison.aspx
 
Perhaps they are bogus but I get upload speed at 2.9 mbps.  I'm not
that hot at math but I'm not following your figures.

  800 mb  / 2.9 mb = 275.86206896551727 seconds

  276 / 60 = 4.6 minutes

Even at the lowest upload speed you mentioned:
  
 800 / .5  = 1600.0 seconds
 1600 / 60 = 26.67 minutes
 
I'm, no doubt doing this wrong... can you explain how you arrived at
50 minuted to 4 hrs.  Maybe I'm mixing apples and oranges (or megabits
and megabytes?)