It's due to space restrictions on the server. We have 300GB available
on the server, but the compressed data takes up 200GB, and we're adding
new data (several GB) every month or so.
So we need to keep as much compressed as possible, but we have to
uncompress the data for the webpages to use it. The PHP webpages on the
server use the uncompressed data to generate plots. The data is never
sent to the user, just the plots.
The main problem I'm having is with page resolution. If I say:
print("<SCRIPT>jsPopupWindow('Starting UNZIP');</SCRIPT>\n");
$gunzipcmdline = "gunzip /PATHTO/MYDATA";
$result = exec("$gunzipcmdline", $execout, $execretval);
print("<SCRIPT>jsPopupWindow('Finished UNZIP');</SCRIPT>\n");
the 'Starting UNZIP' popup appears at the same time as the 'Finished
UNZIP' one. The page hasn't resolved until after the gunzip is done, so
it doesn't execute the Javascript the way I want it to. I've tried
popping up a window, getting the handle, passing the handle to the
gunzip code, then closing the handle when the gunzip is done, but that
hasn't worked either.
Justin French wrote:
>Ray Clouse wrote:
>
>>When the user clicks on a link that has to gunzip a very large file, I
>>want a popup to say "Working..." while the file is uncompressing.
>>Then, when the file is uncompressed, I want the "Working..." popup to
>>close itself and then the parent window to load a new URL (where it
>>will use the uncompressed file).
>>
>>I've tried doing this with Javascript and window.open(), but I'm having
>>no luck. Any ideas?
>>
>
>Is the uncompressing taking place on the server? or on the local (user)
>machine? Sounds like it's on the server.
>
>The problem is, you have no *real* way of knowing how long the de-comp
>will take (due to other factors, like server/client load, etc etc), so
>how do you know when to go from "working" to "done".
>
>
>So, i'm trying to figure out WHY you're uncompressing a file on the
>server that will be used by visitors over http.
>
>Seems wrong to me. Increased server load, more programs, more problems,
>slower server response time, increased user anger, etc etc.
>
>
>Enlighten me as to why, because I may be missing something.
>
>
>Justin French
>
--
-------------------------------------------------------------------------
Ray Clouse | Don't fear the penguins.
Engineer Scientist/Specialist |
Boeing Expendable Launch Vehicles | Ray.Clouse AT boeing.com
Huntington Beach, CA | clouse AT rayclouse.org
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