13779
82%
master: 87%

Ran 02 Sep 2018 08:01PM UTC

Jobs 1

Files 304

Run time 19s

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Build # 13779

Build Type

push

travis-ci

Committed by

locker

Commit Message

vinyl: keep track of disk idle time

To understand whether the disk is fully utilized or can still handle
more compaction load and make right decisions regarding transaction
throttling, we need a metric that would report how much time worker
threads spent being idle. So this patch adds a new metric to global
statistics, box.stat.vinyl().disk.idle_ratio. The metric is updated
on each dump using the following formula:

                       idle_time
  idle_ratio = --------------------------
               dump_period * worker_count

where idle_time is the total amount of time workers were idle between
the last two dumps, dump_period is the time that passed between the last
two dumps, worker_count is the number of workers.

The value of the new metric always lays between 0 inclusive and 1
exclusive. The closer it is to 1 the more busy the disk is.

Run Details

40734 of 49557 relevant lines covered (82.2%)

843335.42 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
3	13779.3 (TARGET=coverage)	02 Sep 2018 08:01PM UTC	304	82.2	Travis Job 13779.3

tarantool / tarantool / 13779
82%
master: 87%

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