[Tilecache] Missing Tiles

[Ivan Grcic]

Hi,

in my case is around 5 secs, max 10. Its never so much as 30 seconds...
cheers

On Mon, Feb 23, 2009 at 7:51 PM, Christopher Schmidt
<crschmidt at metacarta.com> wrote:
> On Tue, Feb 17, 2009 at 10:25:00AM -0600, Terry Austin wrote:
>> All,
>> On a Windows Vista / Apache 2.2 / mod_python / TileCache 2.10 -> MapServer
>> WMS / OpenLayers setup with no pre-seeding, I'm seeing missing tiles on
>> virtually every significant load of tiles in a given view like when changing
>> resolutions or when the view requires loading a lot of tiles because of a
>> pan.  This only occurs when the metaTile option is on.  Turning off
>> metaTiling makes all tiles appear (but has the visual limitations of not
>> using metatiles).  I'm seeing this in my Apache logs with about the same
>> frequency as the missing tiles:
>>
>> unlock
>> D:\Data\Gis\TN\tilecache\tn\version00001\all\07\000\000\060\000\000\013.png.lck
>> failed: [Error 2] The system cannot find the file specified:
>> 'D:\\Data\\Gis\\TN\\tilecache\\tn\\version00001\\all\\07\\000\\000\\060\\000\\000\\013.png.lck'
>>
>> Not sure if that has anything to do with it.  Does this seem like a locking
>> issue (only metatiles use locks?), or is it some wacky Vista TCP limitation
>> thing?  I think that the tile is actually generated because reloading the
>> page makes everything appear correctly.  Also, just using the URL of the
>> missing tile in another browser tab works correctly, so I know the tile can
>> be generated.
>
> How long do your metaTiles take to render? if your metaTiles take > 30s,
> then this is expected behavior; anything that waits longer than 30s by
> default will get an error message (specifically,                 raise
> Exception("You appear to have a stuck lock. You may wish to remove the
> lock named:\n%s" % self.getLockName(tile))
> ).
>
> You can configure this timeout by the 'timeout' parameter of the Disk
> Cache section.
>
> Regards,
> --
> Christopher Schmidt
> MetaCarta
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>



-- 
Ivan Grcic