Opened 11 years ago

Closed 11 years ago

#4682 closed defect (fixed)

GRIB: band caching is too aggressive

Reported by: Even 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 (1)

comment:1 by Even Rouault, 11 years ago

Component: defaultGDAL_Raster
Milestone: 1.9.2
Resolution: fixed
Status: newclosed

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

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