Source file Insns / L1 D$ Miss ----------- ------------------ reload.c 22 reload1.c 25 insn-recog.c 29 GCC 3.3 20020812 (experimental) powerpc-ibm-aix5.1.0.0 Power4 processor As one of my colleagues commented, this is the cache behavior one would see with database transaction processing. In other words, this is *really bad*. David