By James Gren - 8/13/2016
Hi everyone,
I'm attempting to run my first web based implicit experiment after using the desktop version for years. Setting it up was pretty painless, but of the 6 computers we've piloted it on so far, only 1 person got straight into the study. Another 4 managed to get in after quitting out and re-launching the link, and 2 weren't successful at all.
Checking the logs, it seems like there may have been a bit of server downtime on Friday night NZ time (probably very early morning PST):
08/12/2016 - 11:04:56 System error 12002: The operation timed out Line 192, File win\WinUtil.cpp
08/12/2016 - 11:04:56 Errorjames.green/master/master.iqx.unknownUnable to open file 'http://www.millisecond.com/myaccount/scripts/james.green/master/ibuprofen.jpg'.
08/12/2016 - 11:04:56 Errorjames.green/master/master.iqx.picture.primeibuprofen.itemsUnable to load the picture
08/12/2016 - 11:11:08 Errorjames.green/master/master.iqx.unknownSystem error 12002: The operation timed out Line 192, File win\WinUtil.cpp
08/12/2016 - 11:11:08 Errorjames.green/master/master.iqx.unknownInternet error 12002: The operation timed out .
At the same time, I couldn't log into the website, or even get a ping response.
However, on most of the attempts since then, it is either very, very slow to load (like at least a minute) or need to try again. Any advice?
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By James Gren - 8/13/2016
Once it's loaded once on a computer it seems to go OK, but I just tried it on a fresh computer. I didn't use an actual stopwatch, but it was somewhere between 4 and 6 minutes!
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By Dave - 8/14/2016
The 12002 errors indeed indicate a network timeout -- unfortunately it's not possible to say with certainty what along the network path between the client and the server caused the timeout and where. While I'm not aware of any server downtime on 08/12, I'll double-check tomorrow.
As for load times: One determinant of load times is the number of files involved; that amount isn't huge in your case (71 files in total, 68 of those are images), but still enough to cause a slight hit in download performance. I tried running your study using a relatively slow and somewhat dodgy (mobile) connection, and the load time was around 2.5 to 3 minutes for me. Once the files have been downloaded to a computer, any subsequent attempt to (re-)start will indeed be faster: The files are usually still cached on the system at this point and won't have to be downloaded again.
When you test the experiment on a "fresh" computer, (1) do you still get load times in the 5 minute range, and if so (2) how is that computer connected to the internet (connection speed, behind a gateway or not, etc.) and what is the machine's public-facing IP address?
Thanks!
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