Hi, On Tue, Apr 28, 2009 at 5:05 PM, Prentice Bisbal <prent...@ias.edu> wrote: > Greetings, perfmon2 list. > > I just compiled a Linux 2.6.28.1 kernel after applying the > perfmon-new-base-090219 patch. I'm using a free rebuild of RHEL 5.3. > > I compiled the kernel with 'make rpm' and then installed the new kernel > on a couple of machines. I compiled/installed both libpfm-3.8 and > pfmon-3.8 from the latest stabel downloads. > > When I run pfmon, I get this error: > > cannot initialize library. Most likely host PMU is not supported. > > Any ideas what's causing this? Helpful information: >
Strange because it seems you have the kernel piece installed correctly. I suspect there might be a mismatch for the perfmon syscalls between the kernel and libpfm. Try the examples in libpfm/examples_v2.x. If they fail that's a good sign. Compare the kernel syscall numbers in arch/x86/include/asm/unistd_64.h for pfm_* with those in lib/pfmlib_os_linux.c. But normally, this is taken care automatically because the base syscall is exported via /sys/kernel/perfmon/syscall (unless you've removed that). > I compiled on a 64-bit system, and the rpm has "x86_64" in the name, but > the kernel modules for perfmon are in > /lib/modules/2.6.28-perfmon2/kernel/arch/x86: > > ls -c1 /lib/modules/2.6.28-perfmon2/kernel/arch/x86/perfmon/ > perfmon_amd64.ko > perfmon_intel_arch.ko > perfmon_intel_atom.ko > perfmon_intel_core.ko > perfmon_intel_nhm.ko > perfmon_p4.ko > perfmon_pebs_core_smpl.ko > perfmon_pebs_p4_smpl.ko > > Is that normal for a 64-bit system? Am I missing any modules? I search > the list archive for how to debug this. The following command provides > no output: > > /usr/local/bin64/pfdbg --on --printk > > /sys/kernel/perfmon exists, and has these contents: > > ls -c1 /sys/kernel/perfmon/ > pmu_desc > arg_mem_max > debug > formats > mode > reset_stats > smpl_buffer_mem_cur > smpl_buffer_mem_max > syscall > sys_group > sys_sessions_count > task_group > task_sessions_count > version > > cat /sys/kernel/perfmon/version > 2.82 > > cat /sys/kernel/perfmon/pmu_desc/model > AMD64 > > cat /sys/kernel/perfmon/mode > 0 > > cat /sys/kernel/perfmon/debug > 1 > > The system in question is a Dell SC1435 with AMD Opteron Barcelona > processors. Here is /cat/proc/cpuinfo for one of the cores: > > cat /proc/cpuinfo > processor : 0 > vendor_id : AuthenticAMD > cpu family : 16 > model : 2 > model name : Quad-Core AMD Opteron(tm) Processor 2356 > stepping : 3 > cpu MHz : 1150.000 > cache size : 512 KB > physical id : 0 > siblings : 4 > core id : 0 > cpu cores : 4 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 5 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge > mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext > fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good pni > monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a > misalignsse 3dnowprefetch osvw ibs > bogomips : 4588.11 > TLB size : 1024 4K pages > clflush size : 64 > cache_alignment : 64 > address sizes : 48 bits physical, 48 bits virtual > power management: ts ttp tm stc 100mhzsteps hwpstate > > > > > > -- > Prentice > > ------------------------------------------------------------------------------ > Register Now & Save for Velocity, the Web Performance & Operations > Conference from O'Reilly Media. Velocity features a full day of > expert-led, hands-on workshops and two days of sessions from industry > leaders in dedicated Performance & Operations tracks. Use code vel09scf > and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf > _______________________________________________ > perfmon2-devel mailing list > perfmon2-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/perfmon2-devel > ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
