if there's a common ancestor allocating something (let's call it NewBlock() and it uses GetMem) and I have many descendants using this method, is there a chance to find the "eater" amongst these descendants or massif tool will drop all the stats to NewBlock()? Max Here is part of the massif output from lazarus memory usage that shows what you are looking for. The ms_print tool that comes with valgrind does the actual formatting. massif and ms_print both have a threshold value which is the percentage below which they don't report details. This is very helpfull in quickly finding problem areas. 100.00% (288,964,608B) (page allocation syscalls) mmap/mremap/brk, --alloc-fns, etc. ->37.20% (107,483,136B) 0x80C7DD3: SYSTEM_FPSYSCALL$LONGINT$LONGINT$$LONGINT (in /home/ludo/lazarus/lazarus) | ->37.20% (107,483,136B) 0x80C86DF: SYSTEM_FPMMAP$POINTER$LONGWORD$LONGINT$LONGINT$LONGINT$INT64$$POINTER (in /home/ludo/lazarus/lazarus) | ->37.20% (107,483,136B) 0x80DE2EE: SYSTEM_SYSOSALLOC$LONGWORD$$POINTER (in /home/ludo/lazarus/lazarus) | ->13.06% (37,748,736B) 0x80DEFB7: SYSTEM_ALLOC_OSCHUNK$PFREELISTS$LONGWORD$LONGWORD$$POINTER (in /home/ludo/lazarus/lazarus) | | ->13.06% (37,748,736B) 0x80DF396: SYSTEM_SYSGETMEM_VAR$LONGWORD$$POINTER (in /home/ludo/lazarus/lazarus) | | ->10.52% (30,408,704B) 0x8382C3A: LCONVENCODING_ISO_8859_1TOUTF8$ANSISTRING$$ANSISTRING (lconvencoding.pas:4619) | | | ->10.52% (30,408,704B) 0x8389C25: LCONVENCODING_CONVERTENCODING$ANSISTRING$ANSISTRING$ANSISTRING$$ANSISTRING (lconvencoding.pas:6389) | | | ->10.52% (30,408,704B) 0x81593E7: MAIN_TMAINIDE_$__ONCODEBUFFERDECODELOADED$TCODEBUFFER$ANSISTRING$ANSISTRING$ ANSISTRING$ANSISTRING (main.pp:14590) | | | ->10.52% (30,408,704B) 0x8368709: CODECACHE_TCODECACHE_$__DECODELOADED$TCODEBUFFER$ANSISTRING$ANSISTRING$ANSIS TRING$ANSISTRING (codecache.pas:784) | | | ->10.52% (30,408,704B) 0x8369C80: CODECACHE_TCODEBUFFER_$__DECODELOADED$ANSISTRING$ANSISTRING$ANSISTRING$ANSIS TRING (codecache.pas:1153) | | | ->10.52% (30,408,704B) 0x836D3D9: SOURCELOG_TSOURCELOG_$__LOADFROMFILE$ANSISTRING$$BOOLEAN (sourcelog.pas:825) | | | ->09.07% (26,214,400B) 0x83697B0: CODECACHE_TCODEBUFFER_$__LOADFROMFILE$ANSISTRING$$BOOLEAN (codecache.pas:1045) | | | | ->09.07% (26,214,400B) 0x83671DF: CODECACHE_TCODECACHE_$__LOADFILE$ANSISTRING$$TCODEBUFFER (codecache.pas:347) | | | | ->09.07% (26,214,400B) 0x83A63E1: CODETOOLMANAGER_TCODETOOLMANAGER_$__LOADFILE$ANSISTRING$BOOLEAN$BOOLEAN$$TCO DEBUFFER (codetoolmanager.pas:1109) | | | | ->09.07% (26,214,400B) 0x85A0B18: DIALOGPROCS_LOADCODEBUFFER$TCODEBUFFER$ANSISTRING$TLOADBUFFERFLAGS$BOOLEAN$$ TMODALRESULT (dialogprocs.pas:224) | | | | ->09.07% (26,214,400B) 0x813E5B7: MAIN_TMAINIDE_$__DOOPENUNKNOWNFILE$ANSISTRING$TOPENFLAGS$TUNITINFO$BOOLEAN$$ TMODALRESULT (main.pp:6395) | | | | ->09.07% (26,214,400B) 0x8147F58: MAIN_TMAINIDE_$__DOOPENEDITORFILE$crc4B94F828 (main.pp:9380) | | | | ->09.07% (26,214,400B) 0x8147565: MAIN_TMAINIDE_$__DOOPENEDITORFILE$ANSISTRING$LONGINT$LONGINT$TOPENFLAGS$$TMO DALRESULT (main.pp:9123) | | | | ->09.07% (26,214,400B) 0x812EBE3: MAIN_TMAINIDE_$__SETUPSTARTPROJECT (main.pp:2253) | | | | ->09.07% (26,214,400B) 0x812B951: MAIN_TMAINIDE_$__STARTIDE (main.pp:1456) | | | | ->09.07% (26,214,400B) 0x80C7AFF: main (lazarus.pp:113) | | | | | | | ->01.45% (4,194,304B) 0x83698A2: CODECACHE_TCODEBUFFER_$__REVERT$$BOOLEAN (codecache.pas:1081) | | | ->01.45% (4,194,304B) 0x83A63F6: CODETOOLMANAGER_TCODETOOLMANAGER_$__LOADFILE$ANSISTRING$BOOLEAN$BOOLEAN$$TCO DEBUFFER (codetoolmanager.pas:1112) | | | ->01.45% (4,194,304B) 0x85A0B18: DIALOGPROCS_LOADCODEBUFFER$TCODEBUFFER$ANSISTRING$TLOADBUFFERFLAGS$BOOLEAN$$ TMODALRESULT (dialogprocs.pas:224) | | | ->01.45% (4,194,304B) 0x813E5B7: MAIN_TMAINIDE_$__DOOPENUNKNOWNFILE$ANSISTRING$TOPENFLAGS$TUNITINFO$BOOLEAN$$ TMODALRESULT (main.pp:6395) | | | ->01.45% (4,194,304B) 0x8147F58: MAIN_TMAINIDE_$__DOOPENEDITORFILE$crc4B94F828 (main.pp:9380) | | | ->01.45% (4,194,304B) 0x8147565: MAIN_TMAINIDE_$__DOOPENEDITORFILE$ANSISTRING$LONGINT$LONGINT$TOPENFLAGS$$TMO DALRESULT (main.pp:9123) | | | ->01.45% (4,194,304B) 0x812EBE3: MAIN_TMAINIDE_$__SETUPSTARTPROJECT (main.pp:2253) | | | ->01.45% (4,194,304B) 0x812B951: MAIN_TMAINIDE_$__STARTIDE (main.pp:1456) | | | ->01.45% (4,194,304B) 0x80C7AFF: main (lazarus.pp:113) | | | Ludo
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