Does the type of “tile format” of a cached service affect the performance?

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12-28-2018 01:09 AM
JamalNUMAN
Esteemed Contributor

Does the type of “tile format” of a cached service affect the performance?

 

I’m wondering if the type of “tile format” of a cached service affect its performance when consumed.

 

Thank you

 

Best

 

Jamal

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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine
7 Replies
AledJon
Occasional Contributor

Hi again Jamal,

PNG format supports transparency and is a lossless format. I would assume JPEGs are prefered for higher perfomance due to the compressed file size and non transparency. 

This really depends on the differences between png and jpeg handling by arcgis server from the bundle file (.bundle), which I am unfamiliar with.

Cache perfomance can be improved by tuning the disk sector size.

Hope this helps,

Al

JamalNUMAN
Esteemed Contributor

Thank you for the useful input Aled Jon

 

Could you please elaborate a bit more regarding tuning the disk sector size and how this can enhance the performance of the services when consumed?

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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine
AledJon
Occasional Contributor

No problem Jamal.

for example if your disk sector size is 4kb and you have three 5kb images, you are wasting 1kb of space per 3 sectors. 

It's always important to consider this when building a cache.

Retrival of the cache files can be affected by fine resolution of data in disk sectors which would affect perfomance. 

JamalNUMAN
Esteemed Contributor

Many thanks Aled for the help. This is very useful

Best

Jamal

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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine
JamalNUMAN
Esteemed Contributor

I’m back to the same enquiry.

 

What is the best “image format” for imagery caching that brings optimum cache tiles in terms of quality (high degree of color variation) and performance

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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine
JayJohnson6
New Contributor III

https://www.arcgis.com/home/item.html?id=a269d03aa1c840638680e2902dadecac#! 

 

MXD PerfStat is what ESRI Professional Services would use.  At least to test web server loads, display performance, and image display refresh times.

JamalNUMAN
Esteemed Contributor

Thanks Jay for the input

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Jamal Numan
Geomolg Geoportal for Spatial Information
Ramallah, West Bank, Palestine