tarantool / tarantool / 16529

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travis-ci

vinyl: improve dump start/stop logging

When initiating memory dump, print how much memory is going to be
dumped, expected dump rate, ETA, and recent write rate. Upon dump
completion, print observed dump rate in addition to dump size and
duration. This should help debugging stalls on memory quota.

Example:

 | 2019-04-12 12:03:25.092 [30948] main/115/lua I> dumping 39659424 bytes, expected rate 6.0 MB/s, ETA 6.3 s, recent write rate 4.2 MB/s
 | 2019-04-12 12:03:25.101 [30948] main/106/vinyl.scheduler I> 512/1: dump started
 | 2019-04-12 12:03:25.102 [30948] vinyl.dump.0/104/task I> writing `./512/1/00000000000000000008.run'
 | 2019-04-12 12:03:26.487 [30948] vinyl.dump.0/104/task I> writing `./512/1/00000000000000000008.index'
 | 2019-04-12 12:03:26.547 [30948] main/106/vinyl.scheduler I> 512/1: dump completed
 | 2019-04-12 12:03:26.551 [30948] main/106/vinyl.scheduler I> 512/0: dump started
 | 2019-04-12 12:03:26.553 [30948] vinyl.dump.0/105/task I> writing `./512/0/00000000000000000010.run'
 | 2019-04-12 12:03:28.026 [30948] vinyl.dump.0/105/task I> writing `./512/0/00000000000000000010.index'
 | 2019-04-12 12:03:28.100 [30948] main/106/vinyl.scheduler I> 512/0: dump completed
 | 2019-04-12 12:03:28.100 [30948] main/106/vinyl.scheduler I> dumped 33554332 bytes in 3.0 s, rate 10.6 MB/s

(cherry picked from commit 363ab8e6c)

2 of 2 new or added lines in 1 file covered. (100.0%)

41487 of 50341 relevant lines covered (82.41%)

837233.62 hits per line