Performance is a way of quantifying the speed and efficiency of programs.

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2
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3answers
103 views

Iterating using search cursor and layer selection performance?

I'm trying to use the results of a search cursor to iteratively make selections on a feature class and then create new feature classes (so you get a new feature class or shp for each unique value in a ...
1
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0answers
29 views

Leaflet: How to enable pan & zoom while GeoJSON still rendering?

I've overlaid a huge GeoJSON geometry on top of my Leaflet map, covering about 20 countries' borderlines (about 1,5 million vertices) using "L.geoJson". Each time I zoom in/out, the computer has to ...
1
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2answers
55 views

Most reliable way to import large dataset with osm2psql

I know my question is similar to slow import via osm2pgsql to postgresql database and Optimizing osm2pgsql imports for OSM data but as we currently have quite some problems importing a large set of ...
1
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2answers
97 views

Creating tile packages (.tpk files) in ArcGIS for Desktop using multiple cores?

It takes hours or days to create tile package files on my workstation, which has 4 cores, 32G ram and a SSD drive. I noticed only one core is in active use while it is working. Is there a way to ...
1
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0answers
25 views

Improve Performance of Geoprocessing Service - GPServerSync.Load

I have a geoprocessing service in ArcGIS Server 10.1 that is a simple Print Task. The task is running as an Asynchronous service. It renders one MapService from the same ArcGIS Server instance, and ...
5
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2answers
137 views

Creating numpy.array with variable number of fields to test arcpy.da.ExtendTable performance?

There was an ArcPy Café blog posting entitled Adding Fields: Performance Tips which advocated: Two approaches to help increase performance when adding numerous fields to a table or feature ...
3
votes
1answer
141 views

How to find the distance to the nearest coastline from a land-based latitude/longitude point?

I'm completely new to GIS and unsure what I need to solve this problem: In the image above turquoise is actually land. Sea is white. I tried using the NASA Distance to the Nearest Coast data dump ...
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0answers
37 views

SDE Performance issue with SQL Spatial labelled lines on one server

Here is an issue that has stumped ESRI and SQL Server experts alike. I ask it here just to get more people thinking about it. Exhibit A is this screencast. I have two servers: ROGIS: A dedicated ...
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0answers
31 views

Performance Tuning on CartoDB

What kind of tuning can be done on your own cartodb instance to speed things up (outside of sql query optimization and indices)? Is there any documentation on this? If the records do not change, could ...
3
votes
1answer
155 views

Can ArcGIS Online navigate and identify large GIS datasets?

For my upcoming project, I want to see if ArcGIS Online can provide a viable solution. Users will need to have access to webmap on their desktops with basic navigation and identify. This will be an ...
1
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0answers
51 views

How to Buffer with Dissolve ALL on very large polyline dataset? [duplicate]

So I have a fairly large polyline network covering a decent chunk of North America, containing just shy of 900,000 table records. I want to do some very simple "GIS 101" kind of processing to it -- I ...
3
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0answers
128 views

ESRI geodatabase, Oracle spatial performance

We are storing data in a Geodatabase on Oracle 11g using Oracle Spatial with SDO_Geometry, and then consuming that using ArcGIS server 10.2.1. The performance is very slow, because we are talking ...
1
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1answer
58 views

Why a severe performance difference using deleteSearchedRows

The issue I am having involves two versioned tables. A function deletes 48 rows from Table A and and 48 rows from Table B using deleteSearchedRows. However, the delete from Table A takes roughly 4 ...
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0answers
140 views

How to fix the possible memory leak issue in Openlayers 2.13.1 version?

Recently we have upgraded the Openlayers from version 2.12 to 2.13.1. However the performance of the new version is not that promising, infact it has degraded exponentially. I have a draggable model ...
4
votes
2answers
162 views

How to transfer attributes to thousands of local points from ArcSDE feature class with millions of polygons?

I have a set of points and a huge feature class with topographic information (OS MasterMap for who knows it). I'm talking millions of polygons huge. I want to transfer attributes of the polygons to ...
0
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1answer
42 views

Why can't I perform any operation over a 700MB MIF file containing 5 multipolygons? It takes forever

I'm trying to work with a MIF file containing 5 really big multipolygons, but every operation I try takes hours, or just crash because of memory issues. Mainly using ogr2ogr, to transform MIF file to ...
2
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2answers
111 views

Compacting ESRI file geodatabases…good practice?

Is there a way to quantify the effect of compacting your ESRI file geodatabase(s) on editing performance? I currently use ArcInfo(10.0). I have a 769 MB fgdb that holds my most used/edited datalayers ...
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0answers
15 views

Forcing Hash Join Query Plans using PostGIS

I'm currently testing PostGIS 2.0 in a Greenplum Appliance (Postgres 8.2 based) and have hit an incompatibility between PostGIS and the MPP Greenplum environment. The basic query below can't be ...
0
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1answer
81 views

JS/browser API library to show/interact with many markers with the best performance?

What's the best Javascript library that can show about 50000 (and more) clickable markers without resorting to things like clustering markers,etc? The markers are clickable and I want to associate ...
1
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2answers
98 views

spatial database vs spatial datastructure?

I am building an automated system that has to process several hundred spatial queries in the form of a polygon every day. The queries have to return both spatial and nonspatial data from different ...
1
vote
1answer
470 views

Which plugin can draw topoJson right within Leaflet without conversion?

I already have asked how to reduce file size and increase performance for publishing spatial data on the web using Leaflet, here. A conversion to TopoJSON has reduced the file size by approximately ...
3
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2answers
101 views

Fastest Way to Intersect Envelope with Multiple Feature Classes ArcObjects

I have the situation where I am doing a large number of intersections and I need to do them fast. The situation is I have a iMap with 1 or more layers and a series of envelopes, lots of envelopes. I ...
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0answers
30 views

Geoserver lock itself , performance problem

when 10-15 users use my wms layers, geoserver doesn't give response, or i hava tiledmap and when i zoom in and same level geoserver doesn't give any response so image is not appear. Is there any ...
2
votes
1answer
75 views

ArcMap lagging when I use the measure tool

ArcMap is lagging when I click the measure tool, my data isn't particularly big (biggest .shp is ~150mb) and my PC is brand new. Any idea what may be causing this?
0
votes
1answer
37 views

Debug/Improve Performance of GRASS v.in.ogr

I'm trying to import shapefiles (in this case, OpenStreetMap data) into GRASS (grass70-svn) using v.in.ogr; and it is painfully, brutally slow. At first I thought this was because I was using the ...
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0answers
121 views

Why is arcpy.mapping.ConvertWebMapToMapDocument slow?

We use arcpy.mapping for print tasks. The slowest part in workflow is arcpy.mapping function ConvertWebMapToMapDocument; it takes 10-12 seconds each time, doesn't matter if map is big or not. We use ...
3
votes
3answers
129 views

How to speed up redrawing of layers (from shapefiles) in MXD? [duplicate]

How do I speed up the process of redrawing layers in a MXD? I have already tried reloading and indexing the layers. The layers were created from shapefiles.
2
votes
1answer
283 views

Leaflet.geojson webpage performance out of hand, how to convert to .png?

I exported some countries as a single .geojson file. The file includes every country's vertices and coordinates, as that's what a .geojson is ─ a vector file. Thing is, there are about 20 countries ...
2
votes
1answer
103 views

How to refresh layers independently?

I'm writing a C++ application using QGIS API and I would like to improve the performance. I want to render 5 layers: one raster layer using gdal to load Bing/Google Map tiles 4 custom QgsMapLayer ...
2
votes
1answer
196 views

deploying geoserver on linux or windows: performance implications?

I am deploying my first geoserver in production. I develop on a Macbook Pro retina, and my client uses Windows, so I deploy on Windows servers. My first impression was that geoserver seemed a lot ...
1
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0answers
132 views

How to understand output of ArcGIS System Monitor?

We had some performance issues with our enterprise ArcGIS server application, in this regard I have installed ArcGIS System Monitor v1.0.9. After installing and configuring the site, they are several ...
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0answers
71 views

How to improve performance in ArcGIS Javascript API?

I created a webgis using ArcGIS Javascript API . I used dynamic map service layer with two layer in my map.I don't use 3D symbol and the symbology of layers are simple but when i run the project,I ...
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0answers
94 views

ArcMap: Append is really slow

I'm writing a Python script for ArcGIS 9.3.1 which is supposed to do the following: Create a new feature class in local FGDB Loop over a set of IDs (~40,000) Select features from an Oracle GDB with ...
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0answers
207 views

Feature Layer performance improvement

I have create a application where we show world map using arcgis .Here user does lot of interaction with map he click on the map or we highlight map programmatically so i want to improve performance ...
5
votes
1answer
130 views

PostGIS Optimization - Group spatially close entities physically on disk

I'm working on my first PostGIS database and was hoping to find some performance gains for live rendering. I'm rendering a map directly from a PostGIS (9.1, 2.0) db that contains an import of OSM ...
3
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2answers
252 views

How to Speed Up ArcGIS 10.1 for Desktop Generating Near Table on Polygon Feature Classes?

I am trying to create a near table to link two datasets. The first consists of the outlines of about 1.8 million buildings, the second a 3 meter buffer around these buildings, which as been merged ...
2
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0answers
212 views

ArcGIS 10.1 & SQL Server 2012

We currently updated to SQL Server 2012 and now we are encountering a slower performance when connecting to the geodatabase on SQL Server 2012. Here are the things that we tried to fix the issue: - ...
3
votes
1answer
108 views

Is Postgres and Disk IO limiting pgRoutings performance?

I am doing this Q&A style because I have done my google research and I could not find any thrustworthy and 'benchmarked' data. So I did it myself. CPU vs DISK as 'the limitting' factor on ...
2
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3answers
505 views

How can I improve the performance and start-up time of arcgis 10.x?

ArcGIS 10.0 take about 3 minutes to start. ESRI recommends doing these steps (http://support.esri.com/cn/knowledgebase/techarticles/detail/31672) but does not explain the consequences or adverse ...
4
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0answers
52 views

Is there a way to constrain an FME.exe to certain amount of RAM?

If I have FME Desktop running on a workstation with a large amount of RAM (e.g. 128 GB), is there a way to constrain an FME.exe process to a certain amount of RAM (e.g. 48GB)? This question is ...
2
votes
1answer
163 views

Is there an optimum RAM configuration to use for FME Desktop?

I have a couple of workstations with 32GB RAM where fme.exe processes often exceed 25GB, if its available. And I'm looking to possibly add a 3rd workstation. I noticed in an FME2014 beta build some ...
7
votes
3answers
645 views

ArcGIS 10.2 Query Layer on SQL Server performance

I'm using a Query Layer on SQL Server in ArcMap. The Query Layer executes instantly in in SQL Server but but takes so long to draw in ArcMap that the system appears unresponsive for about 10 minutes ...
3
votes
2answers
240 views

How to Select By Attribute and Select By Location simultaneously?

Is there an existing tool that would allow to select by attribute and location simultaneously (or near simultaneously) in ArcGIS 10.0+? Assume the data is stored in a file geodatabase, but could be ...
3
votes
1answer
184 views

IO Performance of ArcPy in virtual machine

The following script just copies a file into RAM, performs some simple operations and writes the result back to hard disc: import arcpy import random import time arcpy.management.Delete("in_memory") ...
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0answers
49 views

Why is the performance of ogr methods different on different OS?

This question actually comes forth from an earlier question of mine . A short introduction. I was writing a program that performs near analysis and creates buffers for a set of points. On my Linux ...
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0answers
79 views

Why might ArcPy, TableToTable, MakeQueryTable and ArcSDE have performance issue in IDLE?

I have written a Python script tool to do: Make Query Table Table To Table (with fieldmapping). The code is nothing more than arcpy.MakeQueryTable("table1;table2;table3", ...
2
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0answers
197 views

Does SVG offer better performance than plain HTML to render text labels in Leaflet? [closed]

I'm using Leaflet built-in L.DivIcon to add text labels to my map. Text labels are rendered in simple HTML divs and can be rotated and scaled using CSS based on values obtained from geojson data ...
2
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3answers
166 views

Openlayer is very slow when using WKT Multipolygon with a large number of Points

I'm showing the boundaries of cyprus regions using openlayers with vector layer, I get the coords from a shapefile which has a lot of points, for instance some regions can have a multipolygon with in ...
0
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2answers
102 views

Python ogr: why is GetFeatureCount() so slow?

I did some profiling for a program I wrote and discovered that ogr's layer.GetFeatureCount() is significantly slower than just using python's BIF len(). Here are my test results def test(): ...
2
votes
1answer
135 views

How applications like Global Mapper, ArcMap and ArcScene support showing high resolution geotiff images?

Considering my question in Game Developement: How to create textures of big images in opengl (bigger than the MAX_TEXTURE_SIZE) it seems that, there's no way to show an image bigger than the ...