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storage_proxy: change collectd to show foreground mutation instead of overall mutation count

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It is much easier to see what is going on this way otherwise graphs for
bg mutations and overall mutations are very close with usual scaling for
many workloads.

Message-Id: <20160204083452.GH6705@scylladb.com>
This commit is contained in:
Gleb Natapov
2016-02-04 10:34:52 +02:00
committed by Avi Kivity
parent a9e4afd8d2
commit 049ae37d08
1 changed files with 2 additions and 2 deletions
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4
service/storage_proxy.cc
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@@ -338,8 +338,8 @@ storage_proxy::storage_proxy(distributed<database>& db) : _db(db) {
_collectd_registrations = std::make_unique<scollectd::registrations>(scollectd::registrations({
scollectd::add_polled_metric(scollectd::type_instance_id("storage_proxy"
, scollectd::per_cpu_plugin_instance
, "queue_length", "writes")
, scollectd::make_typed(scollectd::data_type::GAUGE, [this] { return _response_handlers.size(); })
, "queue_length", "foreground writes")
, scollectd::make_typed(scollectd::data_type::GAUGE, [this] { return _response_handlers.size() - _stats.background_writes; })
),
scollectd::add_polled_metric(scollectd::type_instance_id("storage_proxy"
, scollectd::per_cpu_plugin_instance