CF8.01 Large Files Upload issue

[ctongac]

We are having an issue with posting large files to the server through CFFile. Our server is running on Windows 2003 R2 SP2 with 2GB of RAM. The average upload size is 800MB and we may run into multiple simultaneous uploads with the large file size. So, we have adjusted the "Maximum size of post data" to 2000 MB and "Request Throttle Memory" to 5000 MB in the ColdFusion admin setting to hopefully can allow up to 5 simultaneous uploads.

However, when we tried to launch two 800MB uploads at the same time from different machines, only one upload can get through. The other one returned "Cannot connect to the server" error after a few minutes. No errors can be found in the W3C log and the ColdFusion logs (coldfusion-out.log and exception.log) but it is reported in the HTTPErr1.log with the following message:
2008-04-18 08:16:11 204.13.x.x 3057 65.162.x.x 80 HTTP/1.1 POST /testupload.cfm - 1899633270 Timer_EntityBody DefaultAppPool

Can anyone shed some light of it? Thanks!

[Newsgroup_User]

ctongac wrote:
>
> Can anyone shed some light of it? Thanks!
>
>

Don't forget that your web server (IIS, Apache, etc.) can have upload
throttles as well.

[ctongac]

quote:

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Originally posted by: Newsgroup User

Don't forget that your web server (IIS, Apache, etc.) can have upload
throttles as well.

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We did not throttle our IIS to limit the upload/download bandwidth.

Is there a maximum limit for "Request Throttle Memory" setting? Can we set it over the available physical RAM size?

[DefconRhall]

How many concurrent processes/threads do you have setup in CF?

[ctongac]

We used the default setting of 10 simultaneous requests. This is in a controlled test environment and it should be less than 10 requests at a time.