On Fri, 2009-01-16 at 13:14 -0500, Gregory Haskins wrote: > Ma, Chinang wrote: > > Gregory. > > I will test the resched-ipi instrumentation patch with our OLTP if you can post the patch and some instructions. > > Thanks, > > -Chinang > > > > Hi Chinang, > Please find a patch attached which applies to linus.git as of today. > You will also want to enable CONFIG_FUNCTION_TRACER as well as the trace > components. Here is my system: > I don't see why CONFIG_FUNCTION_TRACER is needed. > ghaskins@dev:~/sandbox/git/linux-2.6-rt> grep TRACE .config > CONFIG_STACKTRACE_SUPPORT=y > CONFIG_TRACEPOINTS=y > CONFIG_HAVE_ARCH_TRACEHOOK=y > CONFIG_BLK_DEV_IO_TRACE=y > # CONFIG_TREE_RCU_TRACE is not set > # CONFIG_PREEMPT_RCU_TRACE is not set > CONFIG_X86_PTRACE_BTS=y > # CONFIG_ACPI_DEBUG_FUNC_TRACE is not set > CONFIG_NETFILTER_XT_TARGET_TRACE=m > CONFIG_SOUND_TRACEINIT=y > CONFIG_TRACE_IRQFLAGS_SUPPORT=y > CONFIG_TRACE_IRQFLAGS=y > CONFIG_STACKTRACE=y > # CONFIG_BACKTRACE_SELF_TEST is not set > CONFIG_USER_STACKTRACE_SUPPORT=y > CONFIG_NOP_TRACER=y > CONFIG_HAVE_FUNCTION_TRACER=y > CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y > CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y > CONFIG_HAVE_DYNAMIC_FTRACE=y > CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y > CONFIG_HAVE_HW_BRANCH_TRACER=y > CONFIG_TRACER_MAX_TRACE=y > CONFIG_FUNCTION_TRACER=y > CONFIG_FUNCTION_GRAPH_TRACER=y > CONFIG_IRQSOFF_TRACER=y > CONFIG_SYSPROF_TRACER=y > CONFIG_SCHED_TRACER=y This CONFIG_SCHED_TRACER should be enough. -- Steve > CONFIG_CONTEXT_SWITCH_TRACER=y > # CONFIG_BOOT_TRACER is not set > # CONFIG_TRACE_BRANCH_PROFILING is not set > CONFIG_POWER_TRACER=y > CONFIG_STACK_TRACER=y > CONFIG_HW_BRANCH_TRACER=y > CONFIG_DYNAMIC_FTRACE=y > CONFIG_FTRACE_MCOUNT_RECORD=y > # CONFIG_FTRACE_STARTUP_TEST is not set > # CONFIG_MMIOTRACE is not set > # CONFIG_KVM_TRACE is not set > > > Then on your booted system, do: > > echo sched_switch > /sys/kernel/debug/tracing/current_tracer > echo 1 > /sys/kernel/debug/tracing/tracing_enabled > $run_oltp && echo 0 > /sys/kernel/debug/tracing/tracing_enabled > > (where $run_oltp is your suite) > > Then, email the contents of /sys/kernel/debug/tracing/trace to me > > -Greg > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
