UsingWW: John Labute - Sporadic problem with creating gifs

$inactiveTopic$ Sporadic problem with creating gifs

topic started 9/29/2001; 9:43:34 AM
last post 10/1/2001; 3:03:33 PM

$user$ John Labute - Sporadic problem with creating gifs $blueArrow$
9/29/2001; 9:43:34 AM (reads: 1041, responses: 2)

We are experiencing sporadic problems in the creating of gifs in 2 assignments, both when they are precreated and on the fly. So far only one instance of each has occured out of 600 students doing the assignment. Has any one else experienced such a behaviour?

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$user$ Arnold K. Pizer - Re: Sporadic problem with creating gifs $blueArrow$
9/29/2001; 10:58:19 AM (reads: 1255, responses: 0)

This is a well known problem. If you have a fast server with a light load you will almost never see this problem. If you have a slow server with a heavy load, you will see it often.

For help on what to do see http://webhost.math.rochester.edu/webworkdocs/discuss/msgReader$312 and also http://webhost.math.rochester.edu/webworkdocs/discuss/msgReader$368

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$user$ Thomas R. Shemanske - Re: Sporadic problem with creating gifs $blueArrow$
10/1/2001; 3:03:33 PM (reads: 1236, responses: 0)

I wrote a couple of shell scripts to scan for the kinds of indicators Pizer mentions in message 312. They were not really written for general consumption, but it does give a way of scanning for the problem before turning it loose on the students.

See http://www.math.dartmouth.edu/webwork_local/scans_for_broken_images/

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John Labute - Sporadic problem with creating gifs

John Labute - Sporadic problem with creating gifs