From 55e41bc679aeee9119dc815b456bb76880f61ea2 Mon Sep 17 00:00:00 2001 From: Zac Dover Date: Wed, 29 May 2024 02:27:53 +1000 Subject: [PATCH] doc/dev: add note about intro of perf counters Add a note to the "perf counter" section of doc/dev/perf_counters.rst that explains that this feature was introduced in the Reef release of Ceph. This note will prevent us from accidentally backporting perf-counter-related PRs to Quincy. Signed-off-by: Zac Dover --- doc/dev/perf_counters.rst | 2 ++ 1 file changed, 2 insertions(+) diff --git a/doc/dev/perf_counters.rst b/doc/dev/perf_counters.rst index 1bcc6120e4af9..3080330bd1240 100644 --- a/doc/dev/perf_counters.rst +++ b/doc/dev/perf_counters.rst @@ -4,6 +4,8 @@ Perf counters =============== +.. note:: Perf counters were introduced in the Reef release of Ceph. + The perf counters provide generic internal infrastructure for gauges and counters. The counted values can be both integer and float. There is also an "average" type (normally float) that combines a sum and num counter which can be divided to provide an average. The intention is that this data will be collected and aggregated by a tool like ``collectd`` or ``statsd`` and fed into a tool like ``graphite`` for graphing and analysis. Also, note the :doc:`../mgr/prometheus` and the :doc:`../mgr/telemetry`. -- 2.39.5