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vipsthumbnail sizes cache better 

the vipsthumbnail cache could be too small on many-cpu machines, size it
more intelligently
This commit is contained in:
John Cupitt 2013-03-01 09:44:19 +00:00
parent 2d085f753b
commit 8269a79801
2 changed files with 17 additions and 14 deletions
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3
ChangeLog
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@ -4,7 +4,8 @@
- fix another dzsave corner-case (thanks Martin)
- neater output for "header"
- added VIPS_META_LOADER: record the loader name
= header displays this hint
= header displays this loader hint
- vipsthumbnail is better at cache sizing
31/8/12 started 7.31.0
- redone im_Lab2XYZ(), im_XYZ2Lab(), im_Lab2LCh(), im_LCh2Lab(), im_UCS2LCh,

28
tools/vipsthumbnail.c
View File

@ -157,6 +157,9 @@ shrink_factor( IMAGE *in, IMAGE *out,
VipsImage **s = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( out ), 1 );
IMAGE *x;
int tile_width;
int tile_height;
int nlines;
if( im_open_local_array( out, t, 9, "thumbnail", "p" ) )
return( -1 );
@ -181,9 +184,10 @@ shrink_factor( IMAGE *in, IMAGE *out,
x = t[1];
}
/* Shrink!
*
* We want to make sure we read the image sequentially.
if( im_shrink( x, t[2], shrink, shrink ) )
return( -1 );
/* We want to make sure we read the image sequentially.
* However, the convolution we may be doing later will force us
* into SMALLTILE or maybe FATSTRIP mode and that will break
* sequentiality.
@ -191,13 +195,14 @@ shrink_factor( IMAGE *in, IMAGE *out,
* So ... read into a cache where tiles are scanlines, and make sure
* we keep enough scanlines to be able to serve a line of tiles.
*/
if( im_shrink( x, t[2], shrink, shrink ) ||
vips_tilecache( t[2], &s[0],
"tile_width", t[2]->Xsize,
"tile_height", 1,
"max_tiles", VIPS__TILE_HEIGHT * 2,
"strategy", VIPS_CACHE_SEQUENTIAL,
NULL ) ||
vips_get_tile_size( t[2],
&tile_width, &tile_height, &nlines );
if( vips_tilecache( t[2], &s[0],
"tile_width", t[2]->Xsize,
"tile_height", 1,
"max_tiles", nlines * 2,
"strategy", VIPS_CACHE_SEQUENTIAL,
NULL ) ||
im_affinei_all( s[0], t[4],
interp, residual, 0, 0, residual, 0, 0 ) )
return( -1 );
@ -256,9 +261,6 @@ shrink_factor( IMAGE *in, IMAGE *out,
if( verbose )
printf( "deleting profile from output image\n" );
/* Only try to remove if it exists to avoid extra error
* messages.
*/
if( im_meta_get_typeof( x, IM_META_ICC_NAME ) &&
!im_meta_remove( x, IM_META_ICC_NAME ) )
return( -1 );