Re: [PATCH v7 0/8] perf: add support for analyzing events for containers

[Hari Bathini]

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