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    SubjectRe: [GIT PULL 0/5] perf/core improvements and fixes


    On 10/15/2011 11:04 AM, Ingo Molnar wrote:
    >
    > * David Ahern <dsahern@gmail.com> wrote:
    >
    >> On 10/15/2011 08:59 AM, Ingo Molnar wrote:
    >>> Btw., i noticed another weirdness - sometimes after startup i get
    >>> this message:
    >>>
    >>> /lib64/libc-2.14.90.so was updated, restart the long running apps that use it!
    >>>
    >>> but it was not updated recently:
    >>>
    >>> earth5:~/tip/tools/perf> ll /lib64/libc-2.14.90.so
    >>> -rwxr-xr-x 1 root root 2062920 Sep 28 15:11 /lib64/libc-2.14.90.so
    >>> earth5:~/tip/tools/perf> date
    >>> Sat Oct 15 16:59:04 CEST 2011
    >>> earth5:~/tip/tools/perf> uptime
    >>> 16:59:08 up 19 days, 21:35, 11 users, load average: 7.77, 7.48, 3.81
    >>
    >> I got the impression that comment was relative to when the
    >> processes were started versus prelink touching it. In your case the
    >> mod time of libc is after the uptime of the box.
    >
    > Ok, that makes sense. Do we report this in perf report output as
    > well?

    It should. The message comes from map__load() when it detects a deleted
    mapping such as:

    7f9e8d5c7000-7f9e8d5c8000 rw-p 0000c000 fd:02 1046947
    /lib64/libpam.so.0.82.2.#prelink#.cM3f72 (deleted)

    I have removed prelink from most of my systems (managed to find one lone
    server with the above).

    David

    >
    > Thanks,
    >
    > Ingo


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