Questions tagged [performance]

Performance concerns how effectively a computing system uses resources.

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5
votes
0answers
235 views

ArcGIS reloadData runs very slow on iOS [closed]

So I have some points on a map. I've written code to allow the user to drag a point around the screen which more or less looks like this. - (void) mapView:(AGSMapView *) mapView ...
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vote
1answer
690 views

OpenLayers GML Polygon Performance

I'm working on a project where we have a large number of very detailed polygons being displayed on a image using Openlayers. The polygons are added to the map through a GML feed. We are having end ...
6
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1answer
861 views

Performance Testing ArcMap?

I want to test performance of ArcGIS Desktop 10.0 based applications. I tried GDBT but it not give me any information about request time etc. I tried also a Workflow Profiler, but this tool usually ...
3
votes
2answers
192 views

Cached map performance when view ArcGIS Server map services in ArcMap?

ArcGIS server cached map service that displays at the following scales: 1:20,000 1:10,000 1:5,000 1:1,000 Refresh takes 1 second when using the Javascript/silverlight viewer, but 4-7 seconds when ...
7
votes
6answers
9k views

ArcMap, ArcCatalog slow to open on laptop with ample resources?

I have a recent installation or ArcGIS Desktop on a 64 bit Windows 7 Machine, with 8GB ram, intel core i7 processor, and a solid state drive. It takes ~2 min to open either ArcMap or ArcCatalog from ...
17
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6answers
9k views

Why is the performance speed between ArcGIS and QGIS so different?

Ok I am not a programmer but a prolific GIS user. I know that QGIS is written in C++ and ArcGIS in ??? but for most of my tasks lately I always try to use QGIS not only because it is free but due to ...
9
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4answers
9k views

How to fix performance problem in PostGIS ST_Intersects?

I'm a newbie in postgis and I have a problem in query performance. This my query: SELECT DISTINCT ON (userid) userid ,ST_AsText(position), timestamp FROM table1 WHERE ST_Intersects ( ...
3
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3answers
3k views

IFeatureBuffer - performance considerations (ArcObjects)

I'm trying to optimize my code to make it faster. I have a loop that reads some string input and creates points with the help of IFeatureBuffer and IFeatureCursor. If I create the buffer inside tho ...
2
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0answers
140 views

Performance issues after upgrading from 9.2 to ArcGIS Mobile release 10 [closed]

We have recently upgraded an application originally written for ArcGIS mobile release 9.2 to the release 10. Even though we have just made a code conversion (no code refractory was applied), the ...
6
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2answers
8k views

OpenLayers canvas renderer - redraws all features on selecting a single feature

I am currently trying to learn more about OpenLayers, and I'm coming up against performance / behaviour issues that I wouldn't expect to see. To elaborate... I have combined this example for ...
11
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4answers
1k views

Performance of ArcGIS Engine using multiple file geodatabases as opposed to one?

I'm trying to decide the best way to organize my data for an ArcGIS Engine application. I am particularly interested in map display and query speed. Currently I have all of my data separated into ...
5
votes
2answers
749 views

Finding points within elliptical area using PostGIS?

Using PostGIS 2.0.0 I need to filter the results of a function, which returns many POINTs, to find the ones that lie within an elliptical area (like a great circle line with a buffer around it) ...
13
votes
2answers
4k views

Lots of layers in one or multiple services? (and why)

I have a conundrum that I am getting mixed advice on how to go about. Therefore id like to put it to GIS-SE for some justified answers. Scenario: Client has a web mapping application. Does not ...
11
votes
3answers
2k views

Which data format typically displays fastest in ArcMap?

My organization is working on an application running on ArcGIS Engine. Previous versions of the application used primarily Shapefiles for displaying roads, parcels, buildings, etc. Since I was ...
3
votes
1answer
1k views

How to increase performance of tile caches if vendor parameter filters are needed?

My application uses vendor parameters to filter the data. It takes some time to generate all tiles on the server. Therefor I'm trying to increase the performance of the application. I'm using ...
22
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4answers
6k views

How can I optimize pgrouting for speed?

I am using pgrouting on a postgis database created through osm2pgrouting. It performs very good on a limited dataset (3.5k ways, all shortest path A* searches < 20 ms). However since I have ...
1
vote
1answer
285 views

Free GeoTIFF Overlay and Tiling (i.e. Indexing) Analyser?

Has anyone come across a shareware/freeware tool for analysing the overlays and tiling (i.e the internal indexing) of GeoTIFF images? What would be excellent would be something like a GeoTIFF tuning ...
2
votes
3answers
5k views

ArcGIS incredibly slow when opening any toolbox tool

I've got a fresh install of ArcGIS 10.0, and whenever I try and open a tool from the toolbox (for example, Project Raster) it takes literally 5 minutes to open the dialog, and then at least 30 seconds ...
5
votes
2answers
1k views

Copying single selected polygon from large ArcSDE feature class in less than 10 seconds?

I have selected a single polygon, which is large but not massively complex, from an ArcSDE 9.3 for Oracle feature class with 3.5 million polygons using ArcGIS Desktop 10.0 SP3. I would simply like ...
1
vote
2answers
922 views

Performance testing ArcGIS Desktop in Citrix environment?

I have a project (ArcGIS 10.0) for a client that could potentially be deployed in a Citrix environment. It will contain a fairly complex Add-In that will, among other things, import data, allow them ...
5
votes
1answer
205 views

Is there a performance penalty when using security-enabled services in ArcGIS Server?

I enabled security on our installation of ArcGIS Server last week, and modified an existing application of ours to use the service tokens to access the services. The application works with the new ...
59
votes
7answers
12k views

Creating Vector Polygons with rendering performance like GISCloud?

I have been looking for a solid solution which would allow me to create a web map and overlay vector polygons without taking forever to load such data with the goal of allowing me to make each polygon ...
2
votes
1answer
398 views

OpenLayers deploy: what libs does selectFeature rely on?

I am trying to minimize my code by modifying OpenLayers deploy configuration file in order to reduce its load time. However, It seems that I can't include all necessary libs that OpenLayers....
5
votes
1answer
673 views

Memory leak in ArcGIS aggregate points/buffer/Addfield/cursor?

There are concerns about the ability of ArcGIS 10 to fulfill a requisite of mine. ET Geowizards has been tried, although it doesn't have the same capability of ArcGIS e.g. I cannot aggregate all of ...
15
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3answers
5k views

Selecting ArcSDE polygon by point in ArcGIS Desktop using ArcPy?

I keep thinking that I must be missing something, but there does not seem to be a tool in ArcGIS 10 to select features (in particular polygons) from a layer at a point (X,Y) location via ArcPy. The ...
8
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2answers
2k views

Benchmarking MXD vs MSD performance?

Has anyone seen any publically available benchmarks of MSDs vs MXDs? If we ignore the fact that as part of the MSD publishing process, we run it through some validators with the map service ...
6
votes
3answers
2k views

Fastest way to merge a feature

I am writing a arc engine application that can take a shapefile, and merge a set of polygons together. Here is the code that I am using to merge the polygons: private static void mergeFeatures(...
5
votes
3answers
1k views

arcpy taking longer and longer in a loop

I am looping through an amount of point arrays, creating data on the fly. The features/arrays, are largely similar in size. One thing I have noticed, is that when I start the process, the time it ...
4
votes
1answer
609 views

Performance of Picture Marker Vs Character Marker (font)?

We have a point data type to symbolise. The feature classes can often contain more than 6000 points up to 20000. There are about 30 different symbol catergories to these points. My question is what'...
6
votes
4answers
16k views

Avoiding GeoServer/Java out of heap space error?

I'm new to Geoserver, Ubuntu and Java, but have downloaded a virtual machine from gisvm.com and am getting up to speed. I got as far as configuring it with some fairly large shapefiles from a project ...
8
votes
1answer
405 views

Will hundreds of attributes cause performance problems in an ArcGIS Server layer?

This relates to ArcGIS Server 10.0 SP1, with data served from a file geodatabase polygon featureclass. 1) For performance reasons, is it a bad idea to have a featureclass with hundreds of attributes? ...
8
votes
1answer
2k views

Should I split MultiPolygons into Polygons?

In the system I'm implementing I have a table T1 with an associated geometry. Most of the geometries are a set of n polygons, with 10 < n < 100. At the moment in the table T1 I have a geometry ...
47
votes
7answers
10k views

Tuning PostGIS for production environments?

What PostGIS documentation have you come across that has been helpful when tuning PostGIS for a production environment? I would like to get together with my DBA to setup a Postgresql/PostGIS ...
7
votes
1answer
1k views

arcpy.mapping.ListLayoutElements() takes longer in tool than in ArcMap?

Has anyone else noticed that accessing elements from arcpy.mapping.ListLayoutElements() through a tool script takes longer than within ArcMap? Whether using a specific name, wildcard or nothing, the ...
4
votes
3answers
1k views

Rendering data quicker in ArcMap?

Is there a way to speed up rendering data into ArcMap ? When I converted the raster to polygon and some data would render quicker and some other renders slow. I am wondering if I could add the ...
3
votes
2answers
2k views

Creating Esri Grid and populating cell values using Python/GDAL or ArcObjects?

In terms of processing speed what's the fastest way of creating and then adding values to a raster? The values will originally come from ASCII files which can be about 500MB in size - ideally I ...
12
votes
5answers
7k views

Compiling Python scripts (to .exe) that use ArcGIS Geoprocessing Tools?

I've been coding with Python for several months now and have developed some reasonably complex scripts for primarily geoprocessing tasks. That being said, I'm still learning a lot as I'm coming from a ...
4
votes
1answer
2k views

Processing time using ArcGIS Hydrology toolbox tools in standalone Python script vs ArcCatalog?

My question is: what might cause the ArcGIS 9.3 Hydrology Toolbox Snap Pour Point and Watershed tools to run significantly slower in a Python script versus manually running the tools in ArcCatalog (...
38
votes
4answers
7k views

Performance of ArcGISScripting and large spatial data sets

I am currently writing a python script using the arcgisscripting module to process a reasonably large data set (~10,000 records in total) normalised over a small number of tables, 8 in total. The ...
2
votes
1answer
544 views

Oracle tracing, bind variables, and ArcSDE

Oracle tracing with TKPROF is the recommended way to troubleshoot data access performance problems with SDE/Oracle. Unfortunately, queries that differ in any way are considered "different" and ...
13
votes
3answers
7k views

Poor Performance when using Spatial Indexes in MySQL

Re-post of a question asked on Stack Overflow when it was suggested this would be a better forum. I'm trying a little experiment at pushing a data set which is not geo-spatial but fits it quite well ...
4
votes
2answers
2k views

Determining percentage of intersection between two shapes In Oracle Spatial

I have to query polygons that intersect with one another. Our polygons occasionally contain intersections that aren't intended (meaning just a few vertices cross boundaries). I want to filter out ...
7
votes
3answers
247 views

Can ArcGIS Desktop render 15,000 Excel records without freezing up or getting too choppy?

For any ArcGIS users, how large of a dataset (in terms of number of records) can ArcGIS comfortably render on the screen at once? For example, if I have an excel spreadsheet with 15k records, will ...
2
votes
1answer
734 views

Stopping Manifold from writing TMP files?

We work with sizable Manifold Projects that sometimes go over a Gb of vector data. After working in Manifold for a while Gigs of TMP files are getting written to the hard drive. We use manifold 8 64 ...
13
votes
1answer
3k views

Why do simple joins on small datasets slow down ArcMap so badly?

ArcGIS 9.3.1, ArcInfo. I have some small file geodatabase and SDE featureclasses (few thousand records each, 50 columns) that I am doing attribute joins on. After the joins, drawing of the map is ...
1
vote
1answer
327 views

Speed up plug-in datasource in ArcObjects

Are there any tricks involved in getting plug-in data sources to run at higher speeds, similar to the built in types? I've noticed that a simple plugin-data source will run many times slower than the ...
4
votes
2answers
541 views

what is the fastest way to plot a list of Canadian Addresses?

I have a list of roughly 500 addresses that I'd like to plot on a map either as a point layer or as a kml/placemarks. The addresses are in form 123 QGis Street, Province, Canada, A1A 1A1
4
votes
6answers
2k views

Measuring data load and redraw times in ArcMap?

Rephrasing of the question slightly to address some issues. Is there are standard way of measuring load times for data, specifically sybolised data, within ArcMap? In particular, we're comparing ...
8
votes
2answers
2k views

Optimizing ArcGIS Desktop performance using MXD Defrag?

Does the MXD Defrag program still exist in ArcGIS 10?
7
votes
4answers
3k views

Improving upon ArcGIS Buffer/Dissolve performance?

I'm wondering if anyone else has experienced significant performance penalties when using the ArcGIS buffer function with the 'dissolve' option on point features. My dataset is a shapefile of 260 ...