Hi, all I do not sure some events description and their result. Take event "BRANCH_INSTRUCTIONS_RETIRED" for example. `showevtinfo` says this event counts the retirement of the last micro-op of a branch instruction.
When I sample an application with event "BRANCH_INSTRUCTIONS_RETIRED", I will expect only the branch instructions got hit. Here is my command, $ perf record -c 10000 -e `evt2raw BRANCH_INSTRUCTIONS_RETIRED` ./bzip2_base.i386-m32-gcc434 input.combined 1 But `perf annotate` shows me that my expectation is wrong. For example, $ perf annotate ------------------------------------------------ Percent | Source code & Disassembly of bzip2_base.i386-m32-gcc434 ------------------------------------------------ 3.65 : 401d65: 89 14 8b mov %edx,(%rbx,%rcx,4) 8.27 : 401d68: 74 2a je 401d94 <fallbackSort+0x1d4> 0.00 : 401d6a: 41 89 c0 mov %eax,%r8d The "mov" instruction should not be a branch instruction, but it still has a percentage. Can anyone help me explain this? Thanks! Regards, chenwj -- Wei-Ren Chen (陳韋任) Parallel Processing Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667 ------------------------------------------------------------------------------ Colocation vs. Managed Hosting A question and answer guide to determining the best fit for your organization - today and in the future. http://p.sf.net/sfu/internap-sfd2d _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
