Fastly Mirrors Throttled to 1 MB/sec?

Daniel J. Luke dluke at
Wed Jun 8 17:12:16 UTC 2022

FWIW on a first download I got 1.37MB/s over det-ix  ( is .3ms away) and my home connection got 981KB/s (to a faslty server 6.8ms away, so probably in chicago - my home ISP breaks traceroute so it's a little harder to see what's happening).

... on a second download I got ~100MB/s (or just about the max of what my gige connection can do) from both locations.\

is the origin server bandwidth constrained?

> On Jun 8, 2022, at 11:53 AM, Chris Jones <jonesc at> wrote:
> On 07/06/2022 3:09 pm, Joshua Root wrote:
>> On 2022-6-7 21:43 , Christopher Nielsen wrote:
>>>> On 2022-06-06-M, at 13:53, Joshua Root <jmr at> wrote:
>>>> Try fetching the same file twice in a row. In my experience, the first fetch from a cold cache is quite slow, but once the local node has the file, it will saturate my connection.
>>> I’ve tried that numerous times over the past few months, but the behavior is extremely consistent: The download speed is tightly throttled at exactly 1 MB/sec, even after two or three back-to-back fetches.
>> Well, that's clearly not the case for all ISPs and all Fastly POPs. More data is needed to know where the throttling is happening.
> Indeed, I for one see no evidence of any throttling
> > wget
> Gives me 39.3MB/s on my work network, and 8.5MB/s on my home ISP.
> Chris - I suspect the issue is more your end, or your ISP, than the servers per se.
> cheers (another) Chris

Daniel J. Luke

More information about the macports-dev mailing list