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From 274fda334a84253222e01b779349784ec552921b Mon Sep 17 00:00:00 2001
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From: Christine Caulfield <ccaulfie@redhat.com>
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Date: Fri, 21 Feb 2020 09:20:29 +0000
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Subject: [PATCH] stats: Add basic schedule-miss stats to needle
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In camelback (48b6894ef41e9a06ccbb696d062d86ef60dc2c4b) we have
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a much more comprehensive system for recording
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schedule misses because it has a 'stats' map. This is much more basic
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and just writes the last event into cmap. You can still query and track
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the value though.
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Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>
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Reviewed-by: Jan Friesse <jfriesse@redhat.com>
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---
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exec/main.c | 3 +++
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man/cmap_keys.8 | 10 ++++++++++
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2 files changed, 13 insertions(+)
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diff --git a/exec/main.c b/exec/main.c
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index 787d5c9..204abc8 100644
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--- a/exec/main.c
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+++ b/exec/main.c
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@@ -852,6 +852,9 @@ static void timer_function_scheduler_timeout (void *data)
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log_printf (LOGSYS_LEVEL_WARNING, "Corosync main process was not scheduled for %0.4f ms "
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"(threshold is %0.4f ms). Consider token timeout increase.",
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(float)tv_diff / QB_TIME_NS_IN_MSEC, (float)timeout_data->max_tv_diff / QB_TIME_NS_IN_MSEC);
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+
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+ icmap_set_float("runtime.schedmiss.delay", (float)tv_diff / QB_TIME_NS_IN_MSEC);
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+ icmap_set_uint64("runtime.schedmiss.timestamp", qb_util_nano_from_epoch_get() / QB_TIME_NS_IN_MSEC);
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}
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/*
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diff --git a/man/cmap_keys.8 b/man/cmap_keys.8
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index b0cd721..1045c65 100644
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--- a/man/cmap_keys.8
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+++ b/man/cmap_keys.8
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@@ -256,6 +256,16 @@ Status of the processor. Can be one of joined and left.
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Config version of the member node.
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.TP
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+runtime.schedmiss.timestamp
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+The timestamp of the last time when corosync failed to be scheduled
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+for the required amount of time. The even is warned in syslog but this
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+is easier to find. The time is milli-seconds since the epoch.
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+
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+.B
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+runtime.schedmiss.delay
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+The amount of time (milliseconds as a float) that corosync was delayed.
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+
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+.TP
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resources.process.PID.*
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Prefix created by applications using SAM with CMAP integration.
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It contains the following keys:
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--
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1.8.3.1
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