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Author SHA1 Message Date
Ganesh Vernekar 59d02b5ef0
tsdb: Block Head GC till pending readers are done reading (#9081) 
* tsdb: Block Head GC till pending readers are done reading

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Fix review comments

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Fix review comments 2

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>

* Fix the exclusiveness of maxt in WaitForPendingReadersInTimeRange

Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
 2021-07-20 14:17:20 +05:30
Bryan Boreham dc8f505595
tsdb: coalesce lock/unlock operations for append (#9061) 
Fetch the low watermark value under the same lock as we need for the
appender, rather than releasing then re-aquiring a lock on the same
Mutex.

Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
 2021-07-07 18:58:20 +05:30
Peter Štibraný ff80690a6e
Optimise lowWatermark in Isolation (#7332) 
* Track open appenders in doubly-linked list to make lowWatermark O(1).
* Use RW locks.
* Added BenchmarkIsolationWithState.

Signed-off-by: Peter Štibraný <peter.stibrany@grafana.com>
 2020-06-03 20:09:05 +02:00