Cleaning the /tmp directory

[Ken Lord]

Hi Ed,
 I had thought the failures might be due to overloading our 'Boat Anchor' 
brand webserver, but the failures happen whether its one or a dozen 
snapshots being generated. Our websites do not handle much volume as they 
are focused to a small group of specific private users.
 That being said, we are switching over to a new webserver, with a separate 
new computer as a PostGIS database server, and saying goodbye to the P3 era. 
Hopefully the new hardware will help, at the very least its going to speed 
up our websites a lot, if not I'll dive back into the URL's that generate 
the snapshots.
 Cheers,
Ken


 On 5/24/05, Ed McNierney <ed at topozone.com> wrote: 
> 
> Ken -
>  If you are trying to serve multiple simultaneous requests, with 
> everything competing to write and then read files from the temp directory, 
> the disk I/O to that drive can become a *serious* bottleneck. If heavy 
> usage is not a concern, then this may be a non-issue.
>  I have never seen failures due to MODE=MAP (rather than being caused by 
> something else) and I've used it about a billion times (literally <g>). I 
> would be leery of blaming failures on MODE=MAP without some diagnosis about 
> the cause.
>   - Ed
>  
> Ed McNierney
> President and Chief Mapmaker
> TopoZone.com <http://topozone.com/> / Maps a la carte, Inc.
> 73 Princeton Street, Suite 305
> North Chelmsford, MA 01863
> ed at topozone.com
> (978) 251-4242 
> 
>  ------------------------------
> *From:* UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] *On 
> Behalf Of *Ken Lord
> *Sent:* Tuesday, May 24, 2005 12:48 PM
> *To:* MAPSERVER-USERS at LISTS.UMN.EDU
> *Subject:* Re: [UMN_MAPSERVER-USERS] Cleaning the /tmp directory
> 
>   James,
>  I use the method you mentioned, 'MODE=MAP', to generate snapshots for 
> query results. It works great to highlight each individual item returned by 
> a map query, placed next each item's attributes.
>  However, Since mapserver 4 and later have come out, often the images fail 
> despite the log statement of 'normal execution'.
>  I have simplified the maps as much as possible, and I'm sure that its not 
> a lingering syntax difference between 3.6 (where it worked great) and 4 or 
> later. The failures are not consistant either. Why they don't either all 
> work or all fail, or at least all the same features queried fail 
> consistantly? I have no idea. 
>  So I'm leary about suggesting people use MODE=MAP for all their maps just 
> to keep their temp folder's empty, especially when a simple .bat file can be 
> used to empty them regularly.
>  Cheers,
> Ken Lord
> Vancouver BC
>
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