[Gdal-dev] gdal memory load

[Marco Vieira]

Hi list.
 I perceived that mapserver was not freeing memory after requests then i
tested the memory load in some situations and noticed that this only
happen in with raster databases (with gdal procedures). I tried than the
same with gdalwarp command and got the same.
My test:
gdalwarp -s_srs +proj=tmerc +ellps=intl +k_0=0.9996 +x_0=500000
+y_0=10000000 +lat_0=0 +lon_0=-45 -t_srs +proj=latlong +ellps=WGS84
foo.tif foobar.tif

(foo.tif has 597M)

free command before gdalwarp:
             total       used       free     shared    buffers     cached
Mem:        906736     194520     712216          0      10520      98032
-/+ buffers/cache:      85968     820768
Swap:      2249060          0    2249060
----------
free during gdalwarp:
             total       used       free     shared    buffers     cached
Mem:        906736     902752       3984          0       1364     746280
-/+ buffers/cache:     155108     751628
Swap:      2249060        716    2248344
----------
free after gdalwarp:
             total       used       free     shared    buffers     cached
Mem:        906736     845860      60876          0       1052     751748
-/+ buffers/cache:      93060     813676
Swap:      2249060        716    2248344

How can I flush memory cached by gdal lib (specially after mapserver
requests)?

my system:
gdal 1.3.0
geos 1.1.4
mapserv 4.6.1
Linux 2.6.8-2-386 (debian)
gcc 4.0.1

Thanks.

Marco Vieira.
Fone:    + 55 21 9499-6800
marco_vieira at uk2.net