mod_csi_simple: Collect stats on number of stanzas per flush
Because interesting, gives some idea about the efficiency.
--- a/plugins/mod_csi_simple.lua Mon Jun 13 21:25:42 2022 +0200
+++ b/plugins/mod_csi_simple.lua Tue Jun 14 03:31:30 2022 +0200
@@ -116,6 +116,9 @@
{ "reason" }
);
+local flush_sizes = module:metric("histogram", "flush_stanza_count", "", "Number of stanzas flushed at once", {},
+ { buckets = { 0, 1, 2, 4, 8, 16, 32, 64, 128, 256 } }):with_labels();
+
local function manage_buffer(stanza, session)
local ctr = session.csi_counter or 0;
if session.state ~= "inactive" then
@@ -129,6 +132,7 @@
session.csi_measure_buffer_hold = nil;
end
flush_reasons:with_labels(why or "important"):add(1);
+ flush_sizes:sample(ctr);
session.log("debug", "Flushing buffer (%s; queue size is %d)", why or "important", session.csi_counter);
session.state = "flushing";
module:fire_event("csi-flushing", { session = session });
@@ -147,6 +151,7 @@
session.log("debug", "Flushing buffer (%s; queue size is %d)", "client activity", session.csi_counter);
session.state = "flushing";
module:fire_event("csi-flushing", { session = session });
+ flush_sizes:sample(ctr);
flush_reasons:with_labels("client activity"):add(1);
if session.csi_measure_buffer_hold then
session.csi_measure_buffer_hold();