Ticket #4682 (closed defect: fixed)

Opened 13 months ago

Last modified 13 months ago

GRIB: band caching is too aggressive

Reported by: rouault Owned by: warmerdam
Priority: normal Milestone: 1.9.2
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords:
Cc:

Description

 http://lists.osgeo.org/pipermail/gdal-dev/2012-May/032915.html : 

The GRIB driver actually caches all the raster data from a band the first type 
you access it, and never releases it. This is to speed-up successive RasterIO 
operations on a band, which is a nice feature generally. But if you iterate 
over all the bands, it means that GDAL will end up allocating (number_of_bands 
* x_size * y_size * sizeof(double) ) bytes. In your case : 1129 * 720 * 360 * 
8 = 2.3 GB indeed.

Change History

Changed 13 months ago by rouault

  • status changed from new to closed
  • resolution set to fixed
  • component changed from default to GDAL_Raster
  • milestone set to 1.9.2

Fixed in trunk (r24504) and branches/1.9 (r24505)

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