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    SubjectRe: [PATCH v7 0/8] perf: add support for analyzing events for containers
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    Hi Jirka,


    On Wednesday 22 February 2017 04:41 PM, Jiri Olsa wrote:
    > On Tue, Feb 21, 2017 at 07:31:11PM +0530, Hari Bathini wrote:
    >> Currently, there is no trivial mechanism to analyze events based on
    >> containers. perf -G can be used, but it will not filter events for the
    >> containers created after perf is invoked, making it difficult to assess/
    >> analyze performance issues of multiple containers at once.
    >>
    >> This patch-set is aimed at addressing this limitation by introducing a
    >> new PERF_RECORD_NAMESPACES event that records namespaces related info.
    >> As containers are created with namespaces, the new data can be used to
    >> in assessment/analysis of multiple containers.
    >>
    >> The first patch introduces PERF_RECORD_NAMESPACES in kernel while the
    >> second patch makes the corresponding changes in perf tool to read this
    >> PERF_RECORD_NAMESPACES events. The third patch demonstrates analysis
    >> of containers with this data by adding a cgroup identifier column in
    >> perf report, which contains the cgroup namespace's device and inode
    >> numbers. This is based on the assumption that each container is created
    >> with it's own cgroup namespace. The third patch has scope for improvement
    >> based on the conventions a container is attributed with, going forward.
    >>
    >> Changes from v6:
    >> * Updated changelog of patch 1
    >> * Split patch 2 into smaller patches
    >> * Updated record and script documenatation
    >> * Dropped name field from ns_link_info struct
    > what's this version based on? I can't cleanly apply it neither
    > on tip's perf/core or master or Arnaldo's perf/core

    That's odd. I based my patches against tip's perf/core
    To be precise, the patches apply cleanly on top of commit
    0c8967c9df230d2c4dde6649f410b62e01806c22.

    Thanks
    Hari

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