[Moin-user] File download throttling based on file size?

[Rick VanDerveer]

Geoff,
I've observed similar cases with our organization's internal wiki.

I'm using FastCGI for our wiki.  I can be COMPLETELY wrong here, but my hypothesis is that FastCGI is only a single process, and therefore isn't able to adequately juggle multiple large downloads. I have one download in particular that nearly causes the wiki to non-responsive for any other users.

One silly little work-around I've been using is to set up a Apache alias to a directory outside the moin folders, where I keep large downloads. I then link to those files, Moin treats it as a link to an outside server, and Apache can handle the transfer load easily.  Ultimately, it's coming from the same box, but moin isn't serving it and remains as responsive as ever.

-Rick



-----Original Message-----
From: moin-user-bounces at lists.sourceforge.net on behalf of Geoff Mayes
Sent: Thu 7/19/2007 9:04 PM
To: moin-user at lists.sourceforge.net
Subject: [Moin-user] File download throttling based on file size?
 
Howdy Moin users!

Anyone know if there is some sort of download speed throttling built into
MoinMoin?

A user just pointed out that large files (> 100MB) are very slow to download
whereas small files (< 2MB) download instantaneously.  Our Moin instance is
only used internally on our intranet.  I tested this a bit more and
discovered the following:

- When downloading 270MB, 140MB, and 40MB files at the same time, they
download at 3, 6, and 20KB/s, respectively.  This makes me think that Moin is
somehow throttling download speed based on file size (e.g. slowing down big
files).

- It doesn't look like Apache 2.2.3 is the problem because when I move one of
these large files directly to webroot (/var/www/html) from the /wiki/data
directory, this same file downloads at 1.5MB/s.

- I've changed the extension of the filename from .wmv to .ppt, but the same
download speeds are observed.

- Uploading the 270MB file occurred in less than 4 minutes (~1.5MB/s).

Thank you in advance for any further information about this or solutions to
configure/disable throttling.

Regards, Geoff

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