Performance concerns how effectively a computing system uses resources.

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0
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27 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
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1answer
41 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
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0answers
13 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 ...
3
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0answers
49 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
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2answers
79 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
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0answers
29 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
26 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
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2answers
38 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
107 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
40 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
106 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 ...
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0answers
25 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 ...
1
vote
1answer
91 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 ...
0
votes
3answers
120 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
43 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
21 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
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1answer
43 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 ...
0
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0answers
45 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) ...
0
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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
26 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
97 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
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1answer
37 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 ...
4
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0answers
53 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
43 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
18 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
101 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 ...
2
votes
0answers
53 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
69 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
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0answers
124 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 ...
-2
votes
1answer
41 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
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0answers
45 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
91 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
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0answers
25 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 ...
4
votes
2answers
70 views

performance problem with PyQGIS: manipulating attributes

I have selected a vector layer with attributes slope and area. I want to combine all the features with slope 0 to 5, 5 to 10, ... , 85 to 90. The original features are to be discarded, and new ...
6
votes
1answer
116 views

Fast Select by location in FME?

I've got a large polygon feature class that covers the whole of GB and contains about 120k features. I need to do a spatial filter on this feature class in FME workbench. I've done this in Arc ...
1
vote
1answer
50 views

Can I make my zonal analysis faster?

I created this python script which performs zonal analysis for the 100m, 200m, 300m, and 400m surrounding a list of points. It works but I have two main problems: A) The raster I am processing has ...
1
vote
0answers
23 views

Subset of spatial data causes slow SQL Spatial STIntersects

I've been having an issue were a specific subset of data causes an SQL spatial intersect to run extremely slowly. I am running sets of 1000 points against a subset of polygon layer to be intersected. ...
2
votes
0answers
77 views

Benchmarking ArcPy / ArcMap Performance on different computers?

This project came out of my need to build a justification for a faster work computer. Before asking for new equipment I want to be prepared to show the increase in performance by adding RAM or more ...
12
votes
3answers
491 views

How many layers are too many layers in ArcMap?

I work on ArcGIS using a Citrix virtual software connection at work. It is dreadfully slow at times, and without any changes to the MXDs I'm working on, one minute ArcMap can be operating at a ...
3
votes
1answer
67 views

Postgis spatial index not used

I have the following table : Table "osm_france.france_2po_4pgr" Column | Type | Modifiers ---------------+---------------------------+----------- id | ...
1
vote
0answers
35 views

Geoserver VM with NAS, Should I store entire VHD on the NAS or just map the data directory? Or just go with internal SSDs w/ weekly backups?

Our humble geoserver instance needs to be able to host GEOTIFF image pyramids ranging in size from a few gigs to a few TBs. A NAS appliance with raid 10 seems smart from a maintenance/expandability ...
2
votes
1answer
45 views

Loading Features prompt in QGIS?

I'm currently working on a dataset with 3.8m records. I have a very simple expression to update a field that I want to execute using the Field Calculator, while having the Attribute Table open. Do I ...
3
votes
1answer
153 views

Speeding up extraction time of proportion of land cover types in buffer from raster using R?

I would like to extract land cover data in a buffer of 10 km around objects of class SpatialLines and calculate proportion of each land cover type. So, I used the function extract (package raster). I ...
3
votes
2answers
104 views

Dissolving with PostGIS slow and results in large table?

I am having a table of polygons with some 15 Mio. records. The polygons hold an attribute called "dn" with integer values between 0 and 6. My goal is to simplify that table so that polygons below a ...
2
votes
1answer
52 views

Improving performance when importing file geodatabase into PostgreSQL?

I have a file geodatabase created with ArcMap 10.1 that contains one feature class with 650 million points. The feature class contains the shape field and an identifier. The .gdb is approximately ...
0
votes
2answers
87 views

Will .sbn and .sbx files (spatial index) speed up operations in GDAL/OGR?

I'm trying to intersect large datasets in OGR and python using SQL queries like ST_Intersects and ST_Contains. These operations run very fast in ArcMap but I'm designing a system to automate them, ...