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31 commits

Author SHA1 Message Date
Bjoern Rabenstein 1936a40e75 Minor loging improvement. 
Change-Id: I7875d1a58ef9c5ff149f18e36f65959a4712fea2
 2014-11-25 17:09:04 +01:00
Bjoern Rabenstein 096fa0f8b2 Squash a number of TODOs. 
- Staleness delta is no a proper function parameter and not replicated
  from package ast.

- Named type 'chunks' replaced by explicit '[]chunk' to avoid confusion.

- For the same reason, replaced 'chunkDescs' by '[]*chunkDescs'.

- Verified that math.Modf is not a speed enhancement over conversion
  (actually 5x slower).

- Renamed firstTimeField, lastTimeField into chunkFirstTime and
  chunkLastTime.

- Verified unpin() is sufficiently goroutine-safe.

- Decided not to update archivedFingerprintToTimeRange upon series
  truncation and added a rationale why.

Change-Id: I863b8d785e5ad9f71eb63e229845eacf1bed8534
 2014-11-25 17:09:04 +01:00
Bjoern Rabenstein 427c8d53a5 Fix handling of empty chunkDescs while preloading chunks. 
Change-Id: I73ce89fe0ef90c6eda78218e5be2cbfa0207c364
 2014-11-25 17:09:04 +01:00
Bjoern Rabenstein ecee5d8281 Fix head chunk persisting and a chunkDesc race condition. 
- Head chunk persisting only happens in evictOlderThan, so do it
  there.  (With the previous code, it would never happen.)

- Raw accesses to chunkDesc.chunk are now done via isEvicted (with
  locking).

Change-Id: I48b07b56dfea4899b50df159b4ea566954396fcd
 2014-11-25 17:09:04 +01:00
Bjoern Rabenstein 2b4ff620aa Return a nop iterator for series that have been purged completely. 
Change-Id: I6e92cac4472486feefdecba8593c17867e8c710d
 2014-11-25 17:09:03 +01:00
Julius Volz bfa64248b7 Deal with missing series in preloading. 
Change-Id: Ibf3a57b329f40a3d5e0b98464a2f45d2f1bd07bf
 2014-11-25 17:09:03 +01:00
Bjoern Rabenstein b3ed9aa7a2 Clean up start-up and shut-down. 
Change-Id: Idff4bbb0a15a9f879bfbb3da5b1025179cab5e2c
 2014-11-25 17:08:45 +01:00
Bjoern Rabenstein 4447708c9f Fix a race in target.go. 
Also, fix problems in shutdown.
Starting serving and shutdown still has to be cleaned up properly.
It's a mess.

Change-Id: I51061db12064e434066446e6fceac32741c4f84c
 2014-11-25 17:08:45 +01:00
Bjoern Rabenstein 38fc24d0ed Fix targetpool_test.go and other tests. 
Change-Id: I91a4dd1d39e01f174e1aaae653ce1ed7aecaa624
 2014-11-25 17:08:26 +01:00
Julius Volz 7f5d3c2c29 Fix and improve the fp locker. 
Benchmark:
$ go test -bench 'Fingerprint' -test.run 'Fingerprint' -test.cpu=1,2,4

OLD
BenchmarkFingerprintLockerParallel        500000              3618 ns/op
BenchmarkFingerprintLockerParallel-2      100000             12257 ns/op
BenchmarkFingerprintLockerParallel-4      500000             10164 ns/op
BenchmarkFingerprintLockerSerial        10000000               283 ns/op
BenchmarkFingerprintLockerSerial-2      10000000               284 ns/op
BenchmarkFingerprintLockerSerial-4      10000000               288 ns/op

NEW
BenchmarkFingerprintLockerParallel       1000000              1018 ns/op
BenchmarkFingerprintLockerParallel-2     1000000              1164 ns/op
BenchmarkFingerprintLockerParallel-4     2000000               910 ns/op
BenchmarkFingerprintLockerSerial        50000000                56.0 ns/op
BenchmarkFingerprintLockerSerial-2      50000000                47.9 ns/op
BenchmarkFingerprintLockerSerial-4      50000000                54.5 ns/op

Change-Id: I3c65a43822840e7e64c3c3cfe759e1de51272581
 2014-11-25 17:07:45 +01:00
Bjoern Rabenstein 8fba3302bc Bold changes to concurrency. 
(WIP. Probably doesn't work yet.)

Change-Id: Id1537dfcca53831a1d428078a5863ece7bdf4875
 2014-11-25 17:07:45 +01:00
Bjoern Rabenstein fcdf5a8ee7 Fix bugs in chunk evict code. 
Also, simplify code by re-looking up metric in metric map.

Change-Id: Ib2092f9184374e5a543e87d3a9f4a74fda64b193
 2014-11-25 17:07:45 +01:00
Bjoern Rabenstein 7e6a03fbf9 Fix a few concurrency issues before starting to use the new fp locker. 
Change-Id: I8615e8816e79ef0882e123163ee590c739b79d12
 2014-11-25 17:07:45 +01:00
Julius Volz db92620163 Instrument eviction and purge durations. 
Change-Id: Ia5b2319363ad2644674c9b7a94162a89bcc296fb
 2014-11-25 17:07:45 +01:00
Bjoern Rabenstein 01dd618a20 Fix a locking bug. 
Change-Id: I183780785991d0b4165ce9186f53eb8201fb3ed5
 2014-11-25 17:07:44 +01:00
Bjoern Rabenstein aea32b0b4b Avoid redundant fingerprint calculation. 
Change-Id: Ief8a165dcfa5030226953346ec9dfe4a7787df1f
 2014-11-25 17:07:44 +01:00
Bjoern Rabenstein e9ff29c547 Comment/code cleanup. 
Change-Id: I38736e3d0fec79759a2bafa35aecf914480ff810
 2014-11-25 17:07:44 +01:00
Bjoern Rabenstein c7aad110fb Add an indexing queue and batch the ops. 
Some other improvements on the way, in particular codec -> codable
renaming and addition of LookupSet methods.

Change-Id: I978f8f3f84ca8e4d39a9d9f152ae0ad274bbf4e2
 2014-11-25 17:07:44 +01:00
Bjoern Rabenstein 71206dbc06 More code cleanups. 
Add license text everywhere.
And others....

Change-Id: I11ccde267a2ef7eb366c4788ba7aeae14ba7545c
 2014-11-25 17:07:44 +01:00
Julius Volz f0d5d4bda3 Fix bug around index purging. 
Change-Id: I8cea00e03f72bbeead2cbd2d26b34d986059ced0
 2014-11-25 17:07:44 +01:00
Julius Volz 630b5a087a Also consider on-disk fingerprints during purge. 
This reintroduces LevelDB iterators so that we can iterate through all
the on-disk fingerprints.

Change-Id: I007ee4638d038d2a4461bbda27f30fcaad411474
 2014-11-25 17:07:35 +01:00
Bjoern Rabenstein f5f9f3514a Major code cleanup. 
- Make it go-vet and golint clean.
- Add comments, TODOs, etc.

Change-Id: If1392d96f3d5b4cdde597b10c8dff1769fcfabe2
 2014-11-25 17:02:53 +01:00
Bjoern Rabenstein 3592dc2359 Implement series eviction. 
Change-Id: I7a503e0ba78aae3761d032851b06f2807122b085
 2014-11-25 17:02:52 +01:00
Bjoern Rabenstein bbf49200ab Implement methods in persistence.go. 
Change-Id: I804cdd0b30420e171825fd86fe1281eca0d5e638
 2014-11-25 17:02:23 +01:00
Bjoern Rabenstein 5a128a04a9 Major reorganization of the storage. 
Most important, the heads file will now persist all the chunk descs,
too. Implicitly, it will serve as the persisted form of the
fp-to-series map.

Change-Id: Ic867e78f2714d54c3b5733939cc5aef43f7bd08d
 2014-11-25 17:02:01 +01:00
Bjoern Rabenstein 4770cf76a4 Make index package more self-contained. 
Moved interna from diskPersistence into the indexer.
TotalIndexer now called diskIndexer.

Change-Id: I6c8c62cb171f12bbd8a5474773af7786d71ba388
 2014-11-25 17:02:01 +01:00
Bjoern Rabenstein af77d5ef0b Added a few missing implementations in index.go. 
Also, added closing of persistence and mem storage.

Change-Id: Iacf0d22c3520dd2584d9546984c1f8a5ed6cd54e
 2014-11-25 17:02:01 +01:00
Julius Volz cca7ebe906 Some more cleanups / obsolete code removals. 
Change-Id: I584144ceeeedafdb114266d8a6d2513e67b1d010
 2014-11-25 17:02:00 +01:00
Julius Volz 7e85711df0 Beginnings of a tiered index implementation. 
This reintroduces a LevelDB-based metrics index.

Change-Id: I4111540301c52255a07b2f570761707a32f72c05
 2014-11-25 17:02:00 +01:00
Bjoern Rabenstein ecdf5ab14f Index-persistence switched from gob to a hand-coded solution. 
Change-Id: Ib4ec42535bd08df16d34d4774bb638e35c5a1841
 2014-11-25 17:02:00 +01:00
Julius Volz e7ed39c9a6 Initial experimental snapshot of next-gen storage. 
Change-Id: Ifb8709960dbedd1d9f5efd88cdd359ee9fa9d26d
 2014-11-25 17:02:00 +01:00