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13 Commits (master)

Author SHA1 Message Date
Sam Arnold 1068d1de6f
refactor: Remove unused function add and unused variable keysHint (#20803) 2021-02-25 08:31:00 -05:00
Daniel Moran 3abd65a1a1
fix(tsm1): fix data race and validation in cache ring (#20797) 
Co-authored-by: Yun Zhao <zhaoyun2316@gmail.com>
 2021-02-24 16:28:30 -05:00
Stuart Carnie dee8977d2c
chore: move v2/v1/tsdb → v2/tsdb 2020-08-26 10:46:47 -07:00
Mark Rushakoff f2898d1992 Wipe out workspace in preparation for v2 merge 
"Knock knock."

"Who's there?"

"InfluxDB Veet."

...
 2019-01-11 10:38:50 -08:00
Jason Wilder e9db11a3e9 Reduce cache partitions to 16 
The large number of partitions cause big HeapInUse swings at higher
cardinality which can lead to OOMs.  Reducing this to 16 lowers
write throughput to some extent at lower cardinalities, keeps memory
more stable over the long run.
 2018-01-31 13:55:32 -07:00
Jason Wilder 4124a8ed97 Simplify cache ring 
The continuum slice is not needed since the number of partitions
doesn't change.  This removes the slice to make the mapping simpler.
 2017-09-19 15:27:25 -06:00
Jason Wilder a93a5e9bdf Include the size of the key in the cache size 2017-09-11 15:29:26 -06:00
Jason Wilder 778000435a Conver all keys from string to []byte in TSM engine 
This switches all the interfaces that take string series key to
take a []byte.  This eliminates many small allocations where we
convert between to two repeatedly.  Eventually, this change should
propogate futher up the stack.
 2017-07-28 11:00:50 -06:00
Stuart Carnie 0c79ec6f17 update xxhash and use Sum64String to avoid allocs 
```
± benchcmp ring_before.txt ring_after.txt
benchmark                             old ns/op     new ns/op     delta
BenchmarkRing_getPartition_100-8      108           48.1          -55.46%
BenchmarkRing_getPartition_1000-8     113           48.9          -56.73%

benchmark                             old allocs     new allocs     delta
BenchmarkRing_getPartition_100-8      1              0              -100.00%
BenchmarkRing_getPartition_1000-8     1              0              -100.00%

benchmark                             old bytes     new bytes     delta
BenchmarkRing_getPartition_100-8      192           0             -100.00%
BenchmarkRing_getPartition_1000-8     192           0             -100.00%
```
 2017-07-26 10:16:54 -07:00
Edd Robinson feb7a2842c Use unbuffered error channels in tests 2017-01-17 10:53:15 -08:00
Edd Robinson 292b30b82b Fix subtle bugs and remove dead code from tsdb 2017-01-17 09:47:34 -08:00
Edd Robinson d2923c7bf9 Add hints as to how to pre-allocate entry values 
Currently, whenever a snapshot occurs the Cache is reset and so many
allocations are repeated, as the same type of data is re-added to
the Cache.

This commit allows the stores to keep track of the number of values
within an entry, and use that size as a hint when the same entry needs
to be recreated after a snapshot.

To avoid hints persisting over a long period of time they are deleting
after every snapshot, and rebuilt using the most recent entries only.
 2016-12-14 18:23:36 +00:00
Edd Robinson 66edb32182 Sharded Cache using a hash ring 2016-12-14 18:23:36 +00:00