linux-kernel - Re: [PATCH v1 0/2] Add procfs based memory and network tool events

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Message-ID: <871pju4vwt.fsf@linux.intel.com>
Date: Mon, 12 Jan 2026 08:50:58 -0800
From: Andi Kleen <ak@...ux.intel.com>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>,  Ingo Molnar <mingo@...hat.com>,
  Arnaldo Carvalho de Melo <acme@...nel.org>,  Namhyung Kim
 <namhyung@...nel.org>,  Jiri Olsa <jolsa@...nel.org>,  Adrian Hunter
 <adrian.hunter@...el.com>,  James Clark <james.clark@...aro.org>,  Thomas
 Falcon <thomas.falcon@...el.com>,  Thomas Richter <tmricht@...ux.ibm.com>,
  linux-perf-users@...r.kernel.org,  linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 0/2] Add procfs based memory and network tool events

Ian Rogers <irogers@...gle.com> writes:

> Add events for memory use and network activity based on data readily
> available in /prod/pid/statm, /proc/pid/smaps_rollup and
> /proc/pid/net/dev. For example the network usage of chrome processes
> on a system may be gathered with:
> ```
> $ perf stat -e
> net_rx_bytes,net_rx_compressed,net_rx_drop,net_rx_errors,net_rx_fifo,net_rx_frame,net_rx_multicast,net_rx_packets,net_tx_bytes,net_tx_carrier,net_tx_colls,net_tx_compressed,net_tx_drop,net_tx_errors,net_tx_fifo,net_tx_packets
> -p $(pidof -d, chrome) -I 1000

But AFAIK that's for the complete network name space, not just the
process, thus highly misleading in perf context because the scope
is incompatible.

-Andi