Performance concerns how effectively a computing system uses resources.

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1answer
41 views

Using memory management and error handling to improve performance of ArcPy script? [on hold]

I have an ArcPy script that adds new fields and then deletes unnecessary fields from a group of feature classes. I am a novice at ArcGIS and even more so at ArcPy, but have been able to piece together ...
0
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0answers
25 views

ArcGIS slow zooming but fast panning

I am using ArcGIS 10.4. Within ArcMap, I have an MXD file with a number of layers within it. All layer sources are feature classes and all of the feature classes are contained within a single ...
0
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0answers
21 views

Multiple Users Over Remote Desktop [closed]

We have around 8 GIS users, we want All users to connect remotely to one GIS Server, where ArcGIS Desktop installed. All users will work on GIS data and process remotely. The main purpose of this is ...
1
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2answers
53 views

Why does deleting columns in the QGIS attribute table take longer than in ArcGIS?

In QGis, I recognised that deleting columns takes quite a while - is there a faster way than doing it in the attribute table (in editing mode?). I am speaking about a table with ~ 300 000 lines... ...
1
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0answers
14 views

Slow SDE Feature Class Performance

I've been experiencing slower than usual performance (noticeably slow time to draw as well as query, compared to similar feature classes) with a specific feature class in my organizations enterprise ...
2
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1answer
29 views

Fastest Formats for ArcGIS Online

Our organization is going to be publishing many maps with multiple types of layers on ArcGIS Online through an ESRI institutional account. What types considerations are there when publishing content ...
0
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0answers
28 views

Splitting polygons (fishnetting) for improved performance?

I have been asked to develop a program to split polygons into smaller polygons to improve drawing speed in ArcGIS/QGis. While this is fairly simple, I am questioning the reasoning behind this? To ...
2
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0answers
58 views

Raster Catalog QGIS; performance

Is there a comfortable way to generate efficient raster catalogs (such as in Arcgis), where polygon tiles are loaded as long as the scale does not hit a threshold value and images are only loaded when ...
0
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1answer
45 views

Arcpy Slow to Read Datasets from Connection (.sde) File

I'm looking to automate publishing map services to ArcGIS Server, and in doing so I'm creating map documents that have only one layer; each layer is from a SQL Server 2014 database that I am accessing ...
3
votes
2answers
57 views

How do partition tables improve query performance in PostGIS? [closed]

I have static road, country and state datasets in my PostGIS database. Road networks are partitioned by their containing country. Countries, States and other areas reside in their own table and are ...
1
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0answers
37 views

Spatially Analyzing two layers within same File Geodatabase using Python / Shapely?

I'm using a nested for-loop to do Shapely analysis between two Python lists created via two pre-reads of the same GDB file. One list contains all the features of a particular layer while the other ...
0
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1answer
44 views

Which is the faster way to copy data to another feature class: Feature Class to Feature Class or Insert Cursor

I have a feature class with 1 million records. Which is the faster way to copy data to another feature class: Feature Class to Feature Class or Insert Cursor?
1
vote
1answer
49 views

Opening >10gb DEM files and clipping?

I have a 5m DEM for an entire province in Spain. It is over 48gb in size and is in asc file format. I only need a very small, 50 km² area. I open the DEM in ArcDesktop, and i get the loading bar ...
0
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0answers
43 views

ArcMap 10.4: editing large-ish polygons very slow

I am working on creating a fantasy world using ArcMap 10.4. I have a feature class for landforms stored in a file GDB that contains many islands, including several that are several hundred miles ...
1
vote
1answer
54 views

Editing with Map Topology performance in ArcGIS Pro?

I have been working on some basic cartography for a fantasy world I am creating, and ArcMap 10.4 was being slow on editing some of the large island polygons I am creating. I figured that as all I am ...
1
vote
0answers
23 views

Heads up before trying Mapbox vector tiles services flexibility with openlayers-3. [closed]

if i load Mapbox vector tiles services in my map using openlayer-3, can i perform the function's like on click popup ? or on hover popup. highlight etc is it advisable and mature enough ? as i saw ...
4
votes
1answer
70 views

Time Delay in Importing ArcPy

I've got a few on demand scripts via the web that run ArcGIS in the background via Arcpy. Now, every one of these scripts takes a solid 15-30 seconds to run, which I find okay. After doing some trial ...
4
votes
3answers
123 views

How to evaluate performance of GPS/GNSS unit

I need to integrate some sort of satellite-based positioning for a mobile robot project. I am at the very beginning - I got 2 u-blox GNSS evaluation boards (these NEO-M8Ts) - I chose an integrated ...
3
votes
0answers
36 views

Mosaic huge numbers of small rasters using ArcGIS

I have around 20'000+ TIFF-rasters that I need to somehow bring together into one raster. The rasters are model outputs and usually aren't big in size (<< 1 MB each). They do not overlap. The ...
2
votes
0answers
31 views

QGIS clipper taking forever

As the project requires, I built virtual raster catalog merging two raster DEM files. Because I don't want to use the whole surface of the new Virtual Raster, I went on to clip a desired rectangle. ...
2
votes
2answers
44 views

Printing data driven pages takes a long time or not working

I am using arcmap 10.2.2 I have a document that has 31 data driven pages on it. Each page is in the 1:6500 scale, and I have a background map consisting of 15 different shapefiles for a county (like ...
6
votes
1answer
109 views

Leveraging capabilities of PostGIS for large (ish) tables in PostgreSQL?

I am using PostgreSQL and PostGIS to do some exploratory analysis and eventually spatial analysis. I have a table with 40M+ points (geolocated tweets) in the United States that has a spatial index. I ...
1
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0answers
16 views

Alternative quicker workflows to the standard Buffer tool in ArcGIS for Desktop 10.3 [duplicate]

I have a point layer representing oil and gas exploration wells containing 500,000 features and have created a 50km dissolved buffer polygon to use in another workflow: The completion time for the ...
3
votes
0answers
67 views

Exporting Raster Layer using “Export Raster Data” vs Copy Raster

Is it possible to access the "Export Raster Data" tool in arcpy? Some background on the steps I am trying to process: I have a raster loaded into an mxd. I have converted the raster to a temporary ...
4
votes
2answers
146 views

Faster way to calculate slope between two points on DEM using ArcGIS for Desktop?

I'm a forester, and I do lots of work with LiDAR derived DEM's. I'm looking for a quick-and-easy tool to calculate the slope between two points. The application for this would be drawing a proposed ...
0
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0answers
34 views

Points within a circle in Python - geoindex

I'm trying to use the geoindex package to perform a nearest neighbor query. For example, I have this two coordinates (in the real case I have a lot more): (40.607255, -73.75083) (40.7261465 -73....
1
vote
1answer
106 views

QGIS 2.14 - Processing Toolbox slow

Since installing 2.14 (and manually fixing errors with MSYS / Grass 7 carryover from previous installation of 2.12), when I try to search for a command in processing toolbox it appears to be re-...
0
votes
3answers
122 views

ArcPy Script Tool takes 30min - Ideas to accelerate the (raster) process

I developed an arcpy script tool that takes as input multiple rasters, a criterion to select specific cells from the raster which are then intersected with a point shapefile. At the end a value is ...
0
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0answers
51 views

Multiple ArcMap Instances

Is ArcGIS designed in a way that it is possible to open and work in multiple ArcMap instances/documents? I am wondering, when I have some time-consuming operations running in the ArcMap document 1, ...
0
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0answers
27 views

Why is Majority so much slower than mean in Focal statistics?

I am trying to use this solution to clean up small holes in my rasters. It uses focal statistics on the no data cells to replace them with a local average. The raster have a small number of unique ...
1
vote
1answer
51 views

OSRM 4.8 import planet-latest.osm.pbf 31G

I use OSRM version 4.8. My VM configuration: 16 CPU 64 RAM 150G SWAP 150G stxxl disk size 250G data directory 50G root While I import europe-latest (17G) file - it takes about 6h to start routing....
0
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0answers
50 views

How to improve GeoServer WCS performance?

I have a Geoserver installation which I am using to serve a large area of 2m LiDAR DSM as a Web Coverage Service (WCS). I'm finding the performance is pretty slow (at least when using the WCS in QGIS) ...
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0answers
13 views

Performance of PostGIS view vs shapefile for WMS in GeoServer? [duplicate]

What does GeoServer render as WMS faster, a layer using a postgis view or one getting data from a shapefile? The data I am working with is a table with 55k rows and with 30 columns, with multipolygon ...
0
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0answers
32 views

How can I merge thousands of polygons in Oracle Spatial in faster way?

Previously I was using sdo_aggr_union(sdoaggrtype(geom, 0.005)) to get boundary polygon by merging geometries, which was taking at least 3 minutes in case of 4000 polygons. Even if I use merging of ...
1
vote
1answer
30 views

Replace Statistics_analysis with SearchCursor?

I'm using ArcGIS 10.3, 64bit with an advanced license. I have the following code, that runs just fine. It goes through a table that contains a large number of entries with zip-codes and population ...
0
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0answers
17 views

mosaic/reprojection/conversion order of operations

I'm writing a python/gdal program that ingests HDF4 files and: 1) Converts subdatasets from HDF4 to GTiff using gdal_translate 2) Mosaic's the new Gtiffs using gdal_merge 3) Defines the ...
1
vote
1answer
123 views

How to speed up Select by location?

Has anyone had a similar "extreme slow" experience using "Select by location" (Toolbox) and "Spatial query" tool? I've used both for selecting some points inside a polygon. The data was in SHPs and ...
1
vote
1answer
46 views

Limitations when running the Union tool with large datasets? [duplicate]

I'm running ArcGIS 10.3 with an Advanced License on a Windows 7 64x system with 20 GB of RAM and a 4th Gen Intel i7 Quadcore-CPU. I have a problem with the normally very efficient Union tool. What I'...
4
votes
0answers
58 views

How do I implement PyQGIS multithreading to update a progress bar

I am developing a PyQGIS plugin using python. I facing a problem during the implementation of threading in my plugin. I have written a python script which contains a class wrapping all geo-processing ...
0
votes
1answer
61 views

mod_tile not using all available threads

I'm setting up an OpenStreetMap server with mod_tile, renderd and mapnik. My problem its low performance. The machine is set up with 8 cores and 16GB RAM. I have 2 use cases: render_list -af -n 8 &...
2
votes
0answers
20 views

Large amount of time publishing to ArcGIS Online?

Publishing <5Mb tile packages to ArcGIS Online is taking more than 20 minutes. ESRI tech support has consistently given extremely vague answers that never solve and always reference server load. &...
0
votes
1answer
116 views

Route Layer with ArcPy and OSM Data - very slow

This is my first attempt at using arcpy: I have two CSVs which have columns: CSV1: join|id_a|lat_a|lon_a CSV2: join|id_b|lat_b|lon_b Each has got 100 rows of data. I would like to write a script ...
3
votes
1answer
68 views

Qgis slow on loading project

Is there any work around to mitigate the amount of time QGIS takes when loading projects that have large tables from postgis layers . I have tried to turn off this large layers so they are not in use ,...
1
vote
1answer
82 views

QGIS Shapefile edited by multiple users

I have a Vector layer containing 36000+ line Objects with a large number of attributes that is currently saved as Shapefile on a server (local network). Multiple users access and edit this Layer ...
2
votes
0answers
164 views

How to use more cpu while processing in qgis

I'm trying to do some clip process with a quile large layers but the process is too slow. When I see the task administrator, just around 28% of the cpu is being used. I've tried with 32-bit and 64-...
-2
votes
1answer
43 views

How much RAM do I need per SDE DB [closed]

Estimating RAM required is never a fixed number. However, there are base figures to follow for example for arcgis server services. How much RAM do I need to plan per DB? I'm using SQL Server but ...
1
vote
0answers
48 views

Why C# Server Object Extensions are faster [closed]

From my experience C# SOE are the fastest. It is also discussed here. ArcGIS Server is developed in Java, how come .NET is the fastest?
2
votes
0answers
48 views

How do I speed up testing debugging when I am loading a large module as part of my program? [closed]

I'm using PyScripter to do some python geocoding automation and I'm coming across the situation where I am waiting several tens of seconds for a large module to be imported. This is very inconvenient ...
0
votes
1answer
99 views

Improving processing time of ArcPy script?

Background: I work for an electrical utility, and we have a point feature class called "meters" that contains approximately 35,000 records. These records represent the actual power meter, and contain ...
0
votes
0answers
27 views

QGIS 2.12 speed up redraw is not working (PostGIS vector layers)

I have about 20 layers. Most of them are PostGIS layers (no raster). All layers in the canvas of my Project are redrawn after every update (for example by paining the map window or switching the edit ...