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Ok I'll try the fishnet - thanks There is no possibility of upgrading the users to 10.1 at this time, unfortunately..
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03-21-2013
08:51 AM
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I am using a large polygon as my extent. I can break it into a fishnet but I don't understand how that will help me to identify missing tiles? And I'm still unsure why I am even missing so many random tiles at all of the levels.. I had much better results with caching in 9.3.1 and that was terribly frustrating too.
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03-20-2013
09:58 AM
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I am using ArcGIS Server 10.1 and SP1. I am creating cache tiles at 16 levels and using a small area to start with. I am using a FC to define the extent. I am creating Exploded cache (due to our users still using 9.3.1 desktop). We are using one server that has 16 cores and using 15 max instances. In the View Cache Status, Cache Status tab, it tells me some levels were completed at less than 100%, which means to me that some tiles were not created. In the Job Status tab it shows the status of "Done" and Completed % at 100%. The cache generation will then stop. It shows no errors. When I look at the tiles in the service I can clearly see missing cache tiles at almost all of the extents. I try to run the Manage Map Server Cache Tiles GP and recreate empty tiles but it does nothing. How can I easily find missing tiles and create a feature class of the missing areas? Or better yet, why do I have so many missing tiles?? I have looked at the status.gdb but I have found it to be worthless because it does not identify specific tiles that are missing. It just reports the % stats for each level.
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03-20-2013
06:46 AM
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I'm also seeing incredibly inconsistent results. I'm building 2 caches at a national scale and I'm running into the following issues. 1) The cache status window will tell me that tile generation is in progress, but no new tiles are being generated after a refresh. The completed tiles stay the same, the percent stays the same and the in progress column is indicating it's still building. I've waited overnight and let my site churn this out to come back in the morning and nothing is new. The job status says the job is done, with a 100% completion and no errors but those tiles still aren't completed on the cache status. 2) the cache process seems to skip/give up on certain scales. I'll have scales that are partially completed and the cache process will simply move onto the next scale and never return to complete the missing tiles in previous scales. So the cache status is telling me that they're only partially complete, but again the job is saying the cache is 100% complete and with no errors. The services themselves have obvious missing tiles as you zoom/pan around with no data. Does anyone have any advice or has anyone been able to successfully build a national scale cache with significant data? The cache I'm generating is a nationwide Navteq 2011 Q3 street dataset with basemaps and I have clients waiting for this service. My site consists of 4 64 bit Windows Server 2008 Machines with 4 cores/8 CPU's @ 2.4GHz (32 total CPU's in the site) and each machine has 18GB of RAM. I don't think my hardware should be the issue. I am having the same exact issues. My cache started off with a bang and then it slowed to a crawl and completed some levels and then only did some of the tiles at other levels. No error reports. Dialog said cache was completed at 100%. It obviously wasn't because half of the tiles are missing. I am going to be doing a nationwide cache at 17 levels shortly and I'm worried that it will give very inconsistent results. Any help would be appreciated!
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10-29-2012
06:47 AM
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I'd drop back to 15 or 16... one more than your machine has cores was the 10.0 model. Seems like the new way is "one less". Actually... it's "one less" than the total... so if you are running 4x4core machines (sixteen total) you'd cache with 15 instances. When you have a single 16 core machine.. I'm not sure what you'd set the caching instances to. By the way, you don't have to set the max instances per machine for the map service itself to the number of instances you want to cache at... only the "cachingtools" service needs to be set to that high number. Ok I'll try that. Thanks for your input!!
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09-28-2012
10:34 AM
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What is the "max instances" value for your cachingtools service? If it's 16... and you set your cache to process with 16... and you are only getting one cpu to process... yeah, that is odd. My max instances in the Caching Tools Service is 17. My min was 0, so I changed that to 1... not sure if that will do anything.. I'm going to try to run again
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09-28-2012
10:26 AM
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Ok, I'm up and running at full caching capacity. You need to make sure your CachingTools services is pointed at the correct cluster. I had mine pointed at my wrong one, which only has one machine in it. I pointed it over to my "caching cluster" and now my map service, which is hosted on the first single machine cluster, is caching at full multi-machine cpu capacity. Pretty cool. Really cool actually. -r I only am using one machine, which has 16 cores, and I'm using the "default" cluster under the Caching Tools. Glad you are up and running! I'm going to poke around a little more
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09-28-2012
10:20 AM
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I am using 10.1. How can I easily tell how long a cache runs? In 9.3.1, when the cache completed, the message box would indicate how long it ran. Also, I am using a 16 core machine dedicated to caching only. I set the max instances to 17 but it only ever uses 1. Why??
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09-28-2012
07:01 AM
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