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Implements slow rrd checks and updates in C

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This commit is contained in:
Simone Mainardi 2020-02-19 19:26:29 +01:00
parent a7ea7f76ed
commit a0612895fe
9 changed files with 49 additions and 81 deletions
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29
scripts/lua/modules/timeseries/drivers/rrd.lua
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@ -74,7 +74,6 @@ local HOST_PREFIX_MAP = {
host_pool = "pool:",
}
local WILDCARD_TAGS = {protocol=1, category=1, l4proto=1}
local MAX_AVG_APPEND_DURATION_MS = 20 -- Appends are considered slow if average is slower than this value
local function get_fname_for_schema(schema, tags)
if schema.options.rrd_fname ~= nil then
@ -957,32 +956,4 @@ end
-- ##############################################
function driver:isAppendSlow()
-- InfluxDB appends are handled in C and are never assumed to be slow
return ntop.getCache("ntopng.cache.rrd.write.slow") == "1"
end
-- ##############################################
function driver:checkAppendSlow()
-- Retrieve the stats for all the interface periodic activities (note that
-- this function can be called concurrently by multiple thread, each with a
-- different interface (already selected and available with interface.<something> methods
local periodic_scripts_stats = interface.getPeriodicActivitiesStats()
for ps_name, ps_stats in pairs(periodic_scripts_stats) do
if ps_stats["rrd"] and ps_stats["rrd"]["write"] then
-- At least 10 calls to consider the average as significant
if ps_stats["rrd"]["write"]["tot_calls"] > 10
and ps_stats["rrd"]["write"]["avg_call_duration_ms"] >= MAX_AVG_APPEND_DURATION_MS then
-- tprint({info = "ERROR", name = ps_name, ps_stats = ps_stats})
ntop.setCache("ntopng.cache.rrd.write.slow", "1", 60 --[[ 1 min TTL --]])
return
end
end
end
end
-- ##############################################
return driver