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

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Message-ID: <20170222111117.GA21376@krava>
Date:   Wed, 22 Feb 2017 12:11:17 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Hari Bathini <hbathini@...ux.vnet.ibm.com>
Cc:     ast@...com, peterz@...radead.org,
        lkml <linux-kernel@...r.kernel.org>, acme@...nel.org,
        alexander.shishkin@...ux.intel.com, mingo@...hat.com,
        daniel@...earbox.net, rostedt@...dmis.org,
        Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        ebiederm@...ssion.com, sargun@...gun.me,
        Aravinda Prasad <aravinda@...ux.vnet.ibm.com>,
        brendan.d.gregg@...il.com
Subject: Re: [PATCH v7 0/8] perf: add support for analyzing events for
 containers

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

thanks,
jirka