https://bugs.kde.org/show_bug.cgi?id=213001--- Comment #2 from Andi Clemens <andi clemens gmx net> 2009-11-04 12:35:36 ---
Still displaying operations in digiKam are very slow, and the bottleneck in
most cases is DImgScale::dimgScaleAARGB().
As far as I can see with OProfile (a much better profiler then valgrind +
callgrind, no system slowdowns and a system wide profiling), pureColorMask()
can not be optimized anymore.
So we need to make dimgScaleAARGB() faster (but I don't understand this
algorithm right now).
samples % image name app name symbol name
56319 31.2541 no-vmlinux no-vmlinux /no-vmlinux
32226 17.8838 libdigikamcore.so.1.0.0 libdigikamcore.so.1.0.0
Digikam::DImgScale::dimgScaleAARGB(Digikam::DImgScale::__dimg_scale_info*,
unsigned int*, int, int, int, int, int, int, int, int)
25042 13.8970 libQtGui.so.4.5.3 libQtGui.so.4.5.3
/usr/lib/libQtGui.so.4.5.3
15489 8.5956 nvidia_drv.so nvidia_drv.so
/usr/lib/xorg/modules/drivers/nvidia_drv.so
13449 7.4635 libdigikamcore.so.1.0.0 libdigikamcore.so.1.0.0
Digikam::DImg::pureColorMask(Digikam::ExposureSettingsContainer*)
8897 4.9374 libdigikamcore.so.1.0.0 libdigikamcore.so.1.0.0
Digikam::DImg::bitBlt(unsigned char const*, unsigned char*, int, int, int, int,
int, int, unsigned int, unsigned int, unsigned int, unsigned int, bool, int,
int)
5542 3.0755 libGLcore.so.190.42 libGLcore.so.190.42
/usr/lib/libGLcore.so.190.42
3404 1.8890 Xorg Xorg
/usr/bin/Xorg
2591 1.4379 anon (tgid:16625 range:0xb3e9f000-0xb473f000) eclipse
anon (tgid:16625 range:0xb3e9f000-0xb473f000)
1547 0.8585 libQtCore.so.4.5.3 libQtCore.so.4.5.3
/usr/lib/libQtCore.so.4.5.3
949 0.5266 libc-2.10.1.so libc-2.10.1.so _int_malloc
633 0.3513 libpthread-2.10.1.so libpthread-2.10.1.so
pthread_mutex_lock
554 0.3074 libpthread-2.10.1.so libpthread-2.10.1.so
__pthread_mutex_unlock_usercnt
529 0.2936 libc-2.10.1.so libc-2.10.1.so malloc
519 0.2880 oprofiled oprofiled
/usr/bin/oprofiled
471 0.2614 libpixman-1.so.0.16.2 libpixman-1.so.0.16.2
pixman_rasterize_edges_accessors
397 0.2203 libc-2.10.1.so libc-2.10.1.so free
368 0.2042 [vdso] (tgid:9156 range:0xb7788000-0xb7789000) Xorg
[vdso] (tgid:9156 range:0xb7788000-0xb7789000)
327 0.1815 libc-2.10.1.so libc-2.10.1.so strcmp
314 0.1743 librt-2.10.1.so librt-2.10.1.so
clock_gettime
312 0.1731 libc-2.10.1.so libc-2.10.1.so _int_free
281 0.1559 libc-2.10.1.so libc-2.10.1.so memmove
276 0.1532 libc-2.10.1.so libc-2.10.1.so memcpy
264 0.1465 libc-2.10.1.so libc-2.10.1.so memset
209 0.1160 libglib-2.0.so.0.2200.2 libglib-2.0.so.0.2200.2
g_main_context_check
183 0.1016 libjvm.so libjvm.so
SymbolTable::lookup(int, char const*, int, unsigned int)
172 0.0955 libdigikamcore.so.1.0.0 libdigikamcore.so.1.0.0
Digikam::DImgScale::dimgCalcApoints(int, int, int)
151 0.0838 libglib-2.0.so.0.2200.2 libglib-2.0.so.0.2200.2
g_main_context_prepare
146 0.0810 libc-2.10.1.so libc-2.10.1.so
__i686.get_pc_thunk.bx
146 0.0810 libc-2.10.1.so libc-2.10.1.so
malloc_consolidate
145 0.0805 libc-2.10.1.so libc-2.10.1.so
pthread_mutex_lock
141 0.0782 libc-2.10.1.so libc-2.10.1.so
pthread_mutex_unlock
133 0.0738 bash bash /bin/bash
124 0.0688 libglib-2.0.so.0.2200.2 libglib-2.0.so.0.2200.2
g_main_context_iterate
114 0.0633 libjvm.so libjvm.so
instanceKlass::oop_oop_iterate_nv(oopDesc*, FastScanClosure*)
106 0.0588 [vdso] (tgid:9321 range:0xb773a000-0xb773b000) kwin
[vdso] (tgid:9321 range:0xb773a000-0xb773b000)
95 0.0527 libdigikamcore.so.1.0.0 libdigikamcore.so.1.0.0
Digikam::DImgScale::dimgCalcYPoints(unsigned int*, int, int, int)
91 0.0505 libglib-2.0.so.0.2200.2 libglib-2.0.so.0.2200.2
g_main_context_dispatch
89 0.0494 libjvm.so libjvm.so
jni_invoke_nonstatic(JNIEnv_*, JavaValue*, _jobject*, JNICallType, _jmethodID*,
JNI_ArgumentPusher*, Thread*)
85 0.0472 libpthread-2.10.1.so libpthread-2.10.1.so
__i686.get_pc_thunk.bx
84 0.0466 libjvm.so libjvm.so
Runtime1::primitive_arraycopy(HeapWord*, HeapWord*, int)
76 0.0422 libc-2.10.1.so libc-2.10.1.so mbrtowc
76 0.0422 libc-2.10.1.so libc-2.10.1.so strlen
74 0.0411 libc-2.10.1.so libc-2.10.1.so strcspn
74 0.0411 libjvm.so libjvm.so
DefNewGeneration::copy_to_survivor_space(oopDesc*)
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