Comment 17 for bug 582157
Revision history for this message
| John A Meinel (jameinel) wrote Re: [Bug 582157] Re: pull from launchpad is slow | #17 |
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(Get the code!)
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> We see a similar rate fetching a large random file over ssh or https.
> If we try multiple simultaneous connections the measurement is noisy but
> it seems like they each reach about this rate: at any rate the same
> bandwidth is not being divided between them. So this does look like the
> server is limiting the rate at which it transmits.
To confirm this, I ran:
wget http://
vs
wget $URL & wget $URL
vs
wget $URL & wget $URL & wget $URL
(basically, changing from 1 connection downloading, up to 3 concurrent
downloads of the same content.)
And I definitely see the difference in the connection. (I captured some
graphs.)
I definitely get more thorough utilization with multiple streams.
What is really strange, though, is that if I go to Vincent's machine, I
get:
2010-06-25 15:45:56 (1.50 MB/s) ...
On the exact same file.
Is it possible that someone outside of Launchpad is doing the bandwidth
capping?
(Note that my max bandwidth is about 300kB/s, so I won't see anything
above what Martin posted as a single-connection limit.)
John
=:->
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