lkml.org 
[lkml]   [2004]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-7

    * Rui Nuno Capela <rncbc@rncbc.org> wrote:

    > config-2.6.10-rc2-mm3-RT-V0.7.31-7.gz
    > - kernel configuration as of my laptop, taken from /proc/config.gz

    Here are some .config suggestion to reduce tracing costs. Here's the
    relevant portion of your .config:

    CONFIG_DEBUG_KERNEL=y
    CONFIG_MAGIC_SYSRQ=y
    # CONFIG_SCHEDSTATS is not set
    # CONFIG_DEBUG_SLAB is not set
    CONFIG_DEBUG_PREEMPT=y
    CONFIG_WAKEUP_TIMING=y
    CONFIG_PREEMPT_TRACE=y
    CONFIG_CRITICAL_PREEMPT_TIMING=y
    CONFIG_CRITICAL_IRQSOFF_TIMING=y
    CONFIG_CRITICAL_TIMING=y
    CONFIG_LATENCY_TIMING=y
    CONFIG_LATENCY_TRACE=y
    CONFIG_MCOUNT=y
    CONFIG_RT_DEADLOCK_DETECT=y
    # CONFIG_DEBUG_KOBJECT is not set
    CONFIG_DEBUG_BUGVERBOSE=y
    # CONFIG_DEBUG_INFO is not set
    CONFIG_FRAME_POINTER=y
    CONFIG_EARLY_PRINTK=y
    CONFIG_DEBUG_STACKOVERFLOW=y

    i'd suggest to use the following one:

    CONFIG_DEBUG_KERNEL=y
    CONFIG_MAGIC_SYSRQ=y
    # CONFIG_SCHEDSTATS is not set
    # CONFIG_DEBUG_SLAB is not set
    # CONFIG_DEBUG_PREEMPT is not set
    # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
    CONFIG_WAKEUP_TIMING=y
    # CONFIG_CRITICAL_PREEMPT_TIMING is not set
    # CONFIG_CRITICAL_IRQSOFF_TIMING is not set
    CONFIG_LATENCY_TIMING=y
    CONFIG_LATENCY_TRACE=y
    CONFIG_MCOUNT=y
    # CONFIG_RT_DEADLOCK_DETECT is not set
    # CONFIG_DEBUG_KOBJECT is not set
    CONFIG_DEBUG_BUGVERBOSE=y
    # CONFIG_DEBUG_INFO is not set
    CONFIG_FRAME_POINTER=y
    CONFIG_EARLY_PRINTK=y
    # CONFIG_DEBUG_STACKOVERFLOW is not set

    especially PREEMPT_TIMING, IRQSOFF_TIMING and RT_DEADLOCK_DETECT are
    quite expensive options.

    Ingo
    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 14:08    [W:0.022 / U:29.612 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site