On Jul 14, 2010, at 9:20 PM, Craig Spiers wrote:
I've seen this also.. even on cached items I see download rates of at most 500Kbyte/sec - is there a limit on throughput for even cached items? Via another cache on APE - I can hit speeds in the Mbytes/sec
The servers have no rate limiting - other than standard TCP. (Actually, non-standard, as we tweak even the TCP parameters. But there are limits, since the end user's machine has its own limitations.)
-----Original Message----- From: nznog-bounces(a)list.waikato.ac.nz [mailto:nznog-bounces(a)list.waikato.ac.nz] On Behalf Of Don Stokes Sent: Thursday, 15 July 2010 1:18 p.m.
We've had some fairly major problems with the Callplus Akamai cache in the past, especially with a customer of ours that makes heavy use of Apple developer resources -- these tend to have relatively little use, so the customer was often getting un-cached items, and performance of those downloads, frankly, sucked.
If we got a cached item, it roared down. But if un-cached, they were experiencing sub-megabit download rates. Downloading beta OS distributions was so bad that they were downloading at home (via a different cache) and bringing them in on a flash stick.
That (obviously) should not happen. However, we are limited to the upstream b/w provided to us. As stated above, we tweak TCP such that downloads to the cache should be quick, but (again, obviously) it cannot be instantaneous. If you have more info, or if it reoccurs, we can look into it.
Akamai support was, uh, unhelpful. I'm being diplomatic.
I am sorry to hear that. Do you have a ticket #? (Sorry to sound like an auto-response-bot, but it really will help me to chase things down if I have a ticket #.) -- TTFN, patrick