linux-kernel - Re: BoF on LPC 2019 : Linux Perf advancements for compute intensive and server systems

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Date:   Mon, 26 Aug 2019 10:55:36 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>,
        Song Liu <songliubraving@...com>,
        "Jin, Yao" <yao.jin@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kees Cook <keescook@...omium.org>,
        Jonatan Corbet <corbet@....net>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: BoF on LPC 2019 : Linux Perf advancements for compute intensive
 and server systems

Em Mon, Aug 26, 2019 at 02:36:48PM +0300, Alexey Budankov escreveu:
> 
> Hi,
> 
> There is a BoF session scheduled on Linux Plumbers Conference 2019 event.
> If you plan attend the event feel free to join and discuss about the BoF 
> topic and beyond:
> 
> Linux Perf advancements for compute intensive and server systems:
> 
> "Modern server and compute intensive systems are naturally built around 
>  several top performance CPUs with large amount of cores and equipped 
>  by shared memory that spans a number of NUMA domains. Compute intensive 
>  workloads usually implement highly parallel CPU bound cyclic codes 
>  performing mathematics calculations that reference data located in 
>  the shared memory. Performance observability and profiling of these 
>  workloads on such systems have unique characteristics and impose specific 
>  requirements on software performance tools. The requirements include 
>  tools CPU scalability, coping with high rate and volume of collected 
>  performance data as well as NUMA awareness. In order to fulfill that 
>  requirements a number of extensions have been implemented in Linux Perf 
>  tool that are currently a part of the Linux kernel source tree 
>  [1], [2], [3], [4]"

All those are already merged, after long reviewing phases and lots of
testing, right?

I think the next step for people working in this area, in preparation
for this BoF, is to list what are their current efforts, like Ian et all
did in:

  https://linuxplumbersconf.org/event/4/contributions/291/

- Arnaldo
 
> Best regards,
> Alexey
> 
> [1] https://marc.info/?l=linux-kernel&m=154149439404555&w=2
> [2] https://marc.info/?l=linux-kernel&m=154817912621465&w=2
> [3] https://marc.info/?l=linux-kernel&m=155293062518459&w=2
> [4] https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html

-- 

- Arnaldo