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24 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Julien Pivotto
|
52630ad0c7 |
Make head Postings only return series in time range
benchmark old ns/op new ns/op delta BenchmarkQuerierSelect/Head/1of1000000-8 405805161 120436132 -70.32% BenchmarkQuerierSelect/Head/10of1000000-8 403079620 120624292 -70.07% BenchmarkQuerierSelect/Head/100of1000000-8 404678647 120923522 -70.12% BenchmarkQuerierSelect/Head/1000of1000000-8 403145813 118636563 -70.57% BenchmarkQuerierSelect/Head/10000of1000000-8 405020046 125716206 -68.96% BenchmarkQuerierSelect/Head/100000of1000000-8 426305002 175808499 -58.76% BenchmarkQuerierSelect/Head/1000000of1000000-8 619002108 567013003 -8.40% BenchmarkQuerierSelect/SortedHead/1of1000000-8 1276316086 120281094 -90.58% BenchmarkQuerierSelect/SortedHead/10of1000000-8 1282631170 121836526 -90.50% BenchmarkQuerierSelect/SortedHead/100of1000000-8 1325824787 121174967 -90.86% BenchmarkQuerierSelect/SortedHead/1000of1000000-8 1271386268 121025117 -90.48% BenchmarkQuerierSelect/SortedHead/10000of1000000-8 1280223345 130838948 -89.78% BenchmarkQuerierSelect/SortedHead/100000of1000000-8 1271401620 243635515 -80.84% BenchmarkQuerierSelect/SortedHead/1000000of1000000-8 1360256090 1307744674 -3.86% BenchmarkQuerierSelect/Block/1of1000000-8 748183120 707888498 -5.39% BenchmarkQuerierSelect/Block/10of1000000-8 741084129 716317249 -3.34% BenchmarkQuerierSelect/Block/100of1000000-8 722157273 735624256 +1.86% BenchmarkQuerierSelect/Block/1000of1000000-8 727587744 731981838 +0.60% BenchmarkQuerierSelect/Block/10000of1000000-8 727518578 726860308 -0.09% BenchmarkQuerierSelect/Block/100000of1000000-8 765577046 757382386 -1.07% BenchmarkQuerierSelect/Block/1000000of1000000-8 1126722881 1084779083 -3.72% benchmark old allocs new allocs delta BenchmarkQuerierSelect/Head/1of1000000-8 4000018 24 -100.00% BenchmarkQuerierSelect/Head/10of1000000-8 4000036 82 -100.00% BenchmarkQuerierSelect/Head/100of1000000-8 4000216 625 -99.98% BenchmarkQuerierSelect/Head/1000of1000000-8 4002016 6028 -99.85% BenchmarkQuerierSelect/Head/10000of1000000-8 4020016 60037 -98.51% BenchmarkQuerierSelect/Head/100000of1000000-8 4200016 600047 -85.71% BenchmarkQuerierSelect/Head/1000000of1000000-8 6000016 6000016 +0.00% BenchmarkQuerierSelect/SortedHead/1of1000000-8 4000055 28 -100.00% BenchmarkQuerierSelect/SortedHead/10of1000000-8 4000073 87 -100.00% BenchmarkQuerierSelect/SortedHead/100of1000000-8 4000253 630 -99.98% BenchmarkQuerierSelect/SortedHead/1000of1000000-8 4002053 6036 -99.85% BenchmarkQuerierSelect/SortedHead/10000of1000000-8 4020053 60054 -98.51% BenchmarkQuerierSelect/SortedHead/100000of1000000-8 4200053 600074 -85.71% BenchmarkQuerierSelect/SortedHead/1000000of1000000-8 6000053 6000053 +0.00% BenchmarkQuerierSelect/Block/1of1000000-8 6000021 6000021 +0.00% BenchmarkQuerierSelect/Block/10of1000000-8 6000057 6000057 +0.00% BenchmarkQuerierSelect/Block/100of1000000-8 6000417 6000417 +0.00% BenchmarkQuerierSelect/Block/1000of1000000-8 6004017 6004017 +0.00% BenchmarkQuerierSelect/Block/10000of1000000-8 6040017 6040017 +0.00% BenchmarkQuerierSelect/Block/100000of1000000-8 6400017 6400017 +0.00% BenchmarkQuerierSelect/Block/1000000of1000000-8 10000018 10000018 +0.00% benchmark old bytes new bytes delta BenchmarkQuerierSelect/Head/1of1000000-8 176001177 1392 -100.00% BenchmarkQuerierSelect/Head/10of1000000-8 176002329 4368 -100.00% BenchmarkQuerierSelect/Head/100of1000000-8 176013849 33520 -99.98% BenchmarkQuerierSelect/Head/1000of1000000-8 176129056 321456 -99.82% BenchmarkQuerierSelect/Head/10000of1000000-8 177281049 3427376 -98.07% BenchmarkQuerierSelect/Head/100000of1000000-8 188801049 35055408 -81.43% BenchmarkQuerierSelect/Head/1000000of1000000-8 304001059 304001049 -0.00% BenchmarkQuerierSelect/SortedHead/1of1000000-8 229192188 2488 -100.00% BenchmarkQuerierSelect/SortedHead/10of1000000-8 229193340 5568 -100.00% BenchmarkQuerierSelect/SortedHead/100of1000000-8 229204860 35536 -99.98% BenchmarkQuerierSelect/SortedHead/1000of1000000-8 229320060 345104 -99.85% BenchmarkQuerierSelect/SortedHead/10000of1000000-8 230472060 3894672 -98.31% BenchmarkQuerierSelect/SortedHead/100000of1000000-8 241992060 40511632 -83.26% BenchmarkQuerierSelect/SortedHead/1000000of1000000-8 357192060 357192060 +0.00% BenchmarkQuerierSelect/Block/1of1000000-8 227201516 227201506 -0.00% BenchmarkQuerierSelect/Block/10of1000000-8 227203057 227203041 -0.00% BenchmarkQuerierSelect/Block/100of1000000-8 227217161 227217165 +0.00% BenchmarkQuerierSelect/Block/1000of1000000-8 227358279 227358289 +0.00% BenchmarkQuerierSelect/Block/10000of1000000-8 228769485 228769475 -0.00% BenchmarkQuerierSelect/Block/100000of1000000-8 242881487 242881477 -0.00% BenchmarkQuerierSelect/Block/1000000of1000000-8 384001705 384001705 +0.00% Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> |
||
Brian Brazil
|
cebe36c7d5 |
Make head Postings only return series in time range
Series() will fetch all the metadata for a series, even if it's going to be filtered later due to time ranges. For 1M series we save ~1.1s if you only needed some of the data, but take an extra ~.2s if you did want everything. benchmark old ns/op new ns/op delta BenchmarkHeadSeries/1of1000000-4 1443715987 131553480 -90.89% BenchmarkHeadSeries/10of1000000-4 1433394040 130730596 -90.88% BenchmarkHeadSeries/100of1000000-4 1437444672 131360813 -90.86% BenchmarkHeadSeries/1000of1000000-4 1438958659 132573137 -90.79% BenchmarkHeadSeries/10000of1000000-4 1438061766 145742377 -89.87% BenchmarkHeadSeries/100000of1000000-4 1455060948 281659416 -80.64% BenchmarkHeadSeries/1000000of1000000-4 1633524504 1803550153 +10.41% benchmark old allocs new allocs delta BenchmarkHeadSeries/1of1000000-4 4000055 28 -100.00% BenchmarkHeadSeries/10of1000000-4 4000073 87 -100.00% BenchmarkHeadSeries/100of1000000-4 4000253 630 -99.98% BenchmarkHeadSeries/1000of1000000-4 4002053 6036 -99.85% BenchmarkHeadSeries/10000of1000000-4 4020053 60054 -98.51% BenchmarkHeadSeries/100000of1000000-4 4200053 600074 -85.71% BenchmarkHeadSeries/1000000of1000000-4 6000053 6000094 +0.00% benchmark old bytes new bytes delta BenchmarkHeadSeries/1of1000000-4 229192184 2488 -100.00% BenchmarkHeadSeries/10of1000000-4 229193336 5568 -100.00% BenchmarkHeadSeries/100of1000000-4 229204856 35536 -99.98% BenchmarkHeadSeries/1000of1000000-4 229320056 345104 -99.85% BenchmarkHeadSeries/10000of1000000-4 230472056 3894673 -98.31% BenchmarkHeadSeries/100000of1000000-4 241992056 40511632 -83.26% BenchmarkHeadSeries/1000000of1000000-4 357192056 402380440 +12.65% Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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Bartlomiej Plotka
|
34426766d8 |
Unify Iterator interfaces. All point to storage now.
This is part of https://github.com/prometheus/prometheus/pull/5882 that can be done to simplify things. All todos I added will be fixed in follow up PRs. * querier.Querier, querier.Appender, querier.SeriesSet, and querier.Series interfaces merged with storage interface.go. All imports that. * querier.SeriesIterator replaced by chunkenc.Iterator * Added chunkenc.Iterator.Seek method and tests for xor implementation (?) * Since we properly handle SelectParams for Select methods I adjusted min max based on that. This should help in terms of performance for queries with functions like offset. * added Seek to deletedIterator and test. * storage/tsdb was removed as it was only a unnecessary glue with incompatible structs. No logic was changed, only different source of abstractions, so no need for benchmarks. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> |
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Ganesh Vernekar
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6f1d2ec73e
|
Break DB.Compact and DB.compactHead and DB.compactBlocks. Add DB.CompactHead.
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Marco Pracucci
|
0703dae7cc
|
Compact TSDB head chunks after being cut, to reduce inuse memory
Signed-off-by: Marco Pracucci <marco@pracucci.com> |
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Thor
|
17d8c49919
|
made stripe size configurable (#6644)
Signed-off-by: Thor <thansen@digitalocean.com> |
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Ganesh Vernekar
|
21a5cf5d1d
|
Bring back tombstones to Head block (#6542)
* Bring back tombstones to Head block Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Add test cases Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> * Cleanup Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Julien Pivotto
|
46d18112a3 |
tsdb: error on series with duplicate labels (#6664)
Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> |
||
|
Brian Brazil
|
4708915ac6 |
Replace StringTuples with []string
Benchmarks show slight cpu/allocs improvements. benchmark old ns/op new ns/op delta BenchmarkPostingsForMatchers/Head/n="1"-4 269978625 235305110 -12.84% BenchmarkPostingsForMatchers/Head/n="1",j="foo"-4 129739974 121646193 -6.24% BenchmarkPostingsForMatchers/Head/j="foo",n="1"-4 123826274 122056253 -1.43% BenchmarkPostingsForMatchers/Head/n="1",j!="foo"-4 126962188 130038235 +2.42% BenchmarkPostingsForMatchers/Head/i=~".*"-4 6423653989 5991126455 -6.73% BenchmarkPostingsForMatchers/Head/i=~".+"-4 6934647521 7033370634 +1.42% BenchmarkPostingsForMatchers/Head/i=~""-4 1177781285 1121497736 -4.78% BenchmarkPostingsForMatchers/Head/i!=""-4 7033680256 7246094991 +3.02% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",j="foo"-4 293702332 287440212 -2.13% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",i!="2",j="foo"-4 307628268 307039964 -0.19% BenchmarkPostingsForMatchers/Head/n="1",i!=""-4 512247746 480003862 -6.29% BenchmarkPostingsForMatchers/Head/n="1",i!="",j="foo"-4 361199794 367066917 +1.62% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",j="foo"-4 478863761 476037784 -0.59% BenchmarkPostingsForMatchers/Head/n="1",i=~"1.+",j="foo"-4 103394659 102902098 -0.48% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!="2",j="foo"-4 482552781 475453903 -1.47% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!~"2.*",j="foo"-4 559257389 589297047 +5.37% BenchmarkPostingsForMatchers/Block/n="1"-4 36492 37012 +1.42% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 557788 611903 +9.70% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 554443 573814 +3.49% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 553227 553826 +0.11% BenchmarkPostingsForMatchers/Block/i=~".*"-4 113855090 111707221 -1.89% BenchmarkPostingsForMatchers/Block/i=~".+"-4 133994674 136520728 +1.89% BenchmarkPostingsForMatchers/Block/i=~""-4 38138091 36299898 -4.82% BenchmarkPostingsForMatchers/Block/i!=""-4 28861213 27396723 -5.07% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 112699941 110853868 -1.64% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 113198026 111389742 -1.60% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 28994069 27363804 -5.62% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 29709406 28589223 -3.77% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 134695119 135736971 +0.77% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 26783286 25826928 -3.57% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 134733254 134116739 -0.46% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 160713937 158802768 -1.19% benchmark old allocs new allocs delta BenchmarkPostingsForMatchers/Head/n="1"-4 36 36 +0.00% BenchmarkPostingsForMatchers/Head/n="1",j="foo"-4 38 38 +0.00% BenchmarkPostingsForMatchers/Head/j="foo",n="1"-4 38 38 +0.00% BenchmarkPostingsForMatchers/Head/n="1",j!="foo"-4 42 40 -4.76% BenchmarkPostingsForMatchers/Head/i=~".*"-4 61 59 -3.28% BenchmarkPostingsForMatchers/Head/i=~".+"-4 100088 100087 -0.00% BenchmarkPostingsForMatchers/Head/i=~""-4 100053 100051 -0.00% BenchmarkPostingsForMatchers/Head/i!=""-4 100087 100085 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",j="foo"-4 44 42 -4.55% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",i!="2",j="foo"-4 50 48 -4.00% BenchmarkPostingsForMatchers/Head/n="1",i!=""-4 100076 100074 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i!="",j="foo"-4 100077 100075 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",j="foo"-4 100077 100074 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~"1.+",j="foo"-4 11167 11165 -0.02% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!="2",j="foo"-4 100082 100080 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!~"2.*",j="foo"-4 111265 111261 -0.00% BenchmarkPostingsForMatchers/Block/n="1"-4 6 6 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 11 11 +0.00% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 11 11 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 15 13 -13.33% BenchmarkPostingsForMatchers/Block/i=~".*"-4 12 10 -16.67% BenchmarkPostingsForMatchers/Block/i=~".+"-4 100040 100038 -0.00% BenchmarkPostingsForMatchers/Block/i=~""-4 100045 100043 -0.00% BenchmarkPostingsForMatchers/Block/i!=""-4 100041 100039 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 17 15 -11.76% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 23 21 -8.70% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 100046 100044 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 100050 100048 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 100049 100047 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 11150 11148 -0.02% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 100055 100053 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 111238 111234 -0.00% benchmark old bytes new bytes delta BenchmarkPostingsForMatchers/Head/n="1"-4 10887816 10887817 +0.00% BenchmarkPostingsForMatchers/Head/n="1",j="foo"-4 5456648 5456648 +0.00% BenchmarkPostingsForMatchers/Head/j="foo",n="1"-4 5456648 5456648 +0.00% BenchmarkPostingsForMatchers/Head/n="1",j!="foo"-4 5456792 5456712 -0.00% BenchmarkPostingsForMatchers/Head/i=~".*"-4 258254408 258254328 -0.00% BenchmarkPostingsForMatchers/Head/i=~".+"-4 273912888 273912904 +0.00% BenchmarkPostingsForMatchers/Head/i=~""-4 17266680 17266600 -0.00% BenchmarkPostingsForMatchers/Head/i!=""-4 273912416 273912336 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",j="foo"-4 7062578 7062498 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".*",i!="2",j="foo"-4 7062770 7062690 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i!=""-4 28152346 28152266 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i!="",j="foo"-4 22721178 22721098 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",j="foo"-4 22721336 22721224 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~"1.+",j="foo"-4 3623804 3623733 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!="2",j="foo"-4 22721480 22721400 -0.00% BenchmarkPostingsForMatchers/Head/n="1",i=~".+",i!~"2.*",j="foo"-4 24816652 24816444 -0.00% BenchmarkPostingsForMatchers/Block/n="1"-4 296 296 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 424 424 +0.00% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 424 424 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 1544 1464 -5.18% BenchmarkPostingsForMatchers/Block/i=~".*"-4 1606114 1606045 -0.00% BenchmarkPostingsForMatchers/Block/i=~".+"-4 17264709 17264629 -0.00% BenchmarkPostingsForMatchers/Block/i=~""-4 17264780 17264696 -0.00% BenchmarkPostingsForMatchers/Block/i!=""-4 17264680 17264600 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 1606253 1606165 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 1606445 1606348 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 17264808 17264728 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 17264936 17264856 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 17264965 17264885 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 3148262 3148182 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 17265141 17265061 -0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 20416944 20416784 -0.00% Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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Brian Brazil
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e9ede51753 |
Remove last vestiges of never used composite index code.
Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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Josh Soref
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91d76c8023 |
Spelling (#6517)
* spelling: alertmanager Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: attributes Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: autocomplete Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: bootstrap Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: caught Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: chunkenc Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: compaction Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: corrupted Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: deletable Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: expected Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: fine-grained Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: initialized Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: iteration Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: javascript Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: multiple Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: number Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: overlapping Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: possible Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: postings Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: procedure Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: programmatic Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: queuing Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: querier Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: repairing Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: received Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: reproducible Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: retention Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: sample Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: segements Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: semantic Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: software [LICENSE] Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: staging Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: timestamp Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: unfortunately Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: uvarint Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: subsequently Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> * spelling: ressamples Signed-off-by: Josh Soref <jsoref@users.noreply.github.com> |
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Brian Brazil
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d782387f81
|
Stream symbols during compaction. (#6468)
Rather than buffer up symbols in RAM, do it one by one during compaction. Then use the reader's symbol handling for symbol lookups during the rest of the index write. There is some slowdown in compaction, due to having to look through a file rather than a hash lookup. This is noise to the overall cost of compacting series with thousands of samples though. benchmark old ns/op new ns/op delta BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 539917175 675341565 +25.08% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 2441815993 2477453524 +1.46% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 3978543559 3922909687 -1.40% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 8430219716 8586610007 +1.86% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 1786424591 1909552782 +6.89% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 5328998202 6020839950 +12.98% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 10085059958 11085278690 +9.92% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 25497010155 27018079806 +5.97% BenchmarkCompactionFromHead/labelnames=1,labelvalues=100000-4 2427391406 2817217987 +16.06% BenchmarkCompactionFromHead/labelnames=10,labelvalues=10000-4 2592965497 2538805050 -2.09% BenchmarkCompactionFromHead/labelnames=100,labelvalues=1000-4 2437388343 2668012858 +9.46% BenchmarkCompactionFromHead/labelnames=1000,labelvalues=100-4 2317095324 2787423966 +20.30% BenchmarkCompactionFromHead/labelnames=10000,labelvalues=10-4 2600239857 2096973860 -19.35% benchmark old allocs new allocs delta BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 500851 470794 -6.00% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 821527 791451 -3.66% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 1141562 1111508 -2.63% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 2141576 2111504 -1.40% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 871466 841424 -3.45% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 1941428 1911415 -1.55% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 3071573 3041510 -0.98% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 6771648 6741509 -0.45% BenchmarkCompactionFromHead/labelnames=1,labelvalues=100000-4 731493 824888 +12.77% BenchmarkCompactionFromHead/labelnames=10,labelvalues=10000-4 793918 887311 +11.76% BenchmarkCompactionFromHead/labelnames=100,labelvalues=1000-4 811842 905204 +11.50% BenchmarkCompactionFromHead/labelnames=1000,labelvalues=100-4 832244 925081 +11.16% BenchmarkCompactionFromHead/labelnames=10000,labelvalues=10-4 921553 1019162 +10.59% benchmark old bytes new bytes delta BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 40532648 35698276 -11.93% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 60340216 53409568 -11.49% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 81087336 72065552 -11.13% BenchmarkCompaction/type=normal,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 142485576 120878544 -15.16% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=101-4 208661368 203831136 -2.31% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=1001-4 347345904 340484696 -1.98% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=2001-4 585185856 576244648 -1.53% BenchmarkCompaction/type=vertical,blocks=4,series=10000,samplesPerSeriesPerBlock=5001-4 1357641792 1358966528 +0.10% BenchmarkCompactionFromHead/labelnames=1,labelvalues=100000-4 126486664 119666744 -5.39% BenchmarkCompactionFromHead/labelnames=10,labelvalues=10000-4 122323192 115117224 -5.89% BenchmarkCompactionFromHead/labelnames=100,labelvalues=1000-4 126404504 119469864 -5.49% BenchmarkCompactionFromHead/labelnames=1000,labelvalues=100-4 119047832 112230408 -5.73% BenchmarkCompactionFromHead/labelnames=10000,labelvalues=10-4 136576016 116634800 -14.60% Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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|
Brian Brazil
|
767fa704b6 |
Load only some offsets into the symbol table into memory.
Rather than keeping the entire symbol table in memory, keep every nth offset and walk from there to the entry we need. This ends up slightly slower, ~360ms per 1M series returned from PostingsForMatchers which is not much considering the rest of the CPU such a query would go on to use. Make LabelValues use the postings tables, rather than having to do symbol lookups. Use yoloString, as PostingsForMatchers doesn't need the strings to stick around and adjust the API call to keep the Querier open until it's all marshalled. Remove allocatedSymbols memory optimisation, we no longer keep all the symbol strings in heap memory. Remove LabelValuesFor and LabelIndices, they're dead code. Ensure we've still tests for label indices, and add missing test that we can work with old V1 Format index files. PostingForMatchers performance is slightly better, with a big drop in allocation counts due to using yoloString for LabelValues: benchmark old ns/op new ns/op delta BenchmarkPostingsForMatchers/Block/n="1"-4 36698 36681 -0.05% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 522786 560887 +7.29% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 511652 537680 +5.09% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 522102 564239 +8.07% BenchmarkPostingsForMatchers/Block/i=~".*"-4 113689911 111795919 -1.67% BenchmarkPostingsForMatchers/Block/i=~".+"-4 135825572 132871085 -2.18% BenchmarkPostingsForMatchers/Block/i=~""-4 40782628 38038181 -6.73% BenchmarkPostingsForMatchers/Block/i!=""-4 31267869 29194327 -6.63% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 112733329 111568823 -1.03% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 112868153 111232029 -1.45% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 31338257 29349446 -6.35% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 32054482 29972436 -6.50% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 136504654 133968442 -1.86% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 27960350 27264997 -2.49% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 136765564 133860724 -2.12% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 163714583 159453668 -2.60% benchmark old allocs new allocs delta BenchmarkPostingsForMatchers/Block/n="1"-4 6 6 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 11 11 +0.00% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 11 11 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 17 15 -11.76% BenchmarkPostingsForMatchers/Block/i=~".*"-4 100012 12 -99.99% BenchmarkPostingsForMatchers/Block/i=~".+"-4 200040 100040 -49.99% BenchmarkPostingsForMatchers/Block/i=~""-4 200045 100045 -49.99% BenchmarkPostingsForMatchers/Block/i!=""-4 200041 100041 -49.99% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 100017 17 -99.98% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 100023 23 -99.98% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 200046 100046 -49.99% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 200050 100050 -49.99% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 200049 100049 -49.99% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 111150 11150 -89.97% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 200055 100055 -49.99% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 311238 111238 -64.26% benchmark old bytes new bytes delta BenchmarkPostingsForMatchers/Block/n="1"-4 296 296 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 424 424 +0.00% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 424 424 +0.00% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 552 1544 +179.71% BenchmarkPostingsForMatchers/Block/i=~".*"-4 1600482 1606125 +0.35% BenchmarkPostingsForMatchers/Block/i=~".+"-4 17259065 17264709 +0.03% BenchmarkPostingsForMatchers/Block/i=~""-4 17259150 17264780 +0.03% BenchmarkPostingsForMatchers/Block/i!=""-4 17259048 17264680 +0.03% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 1600610 1606242 +0.35% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 1600813 1606434 +0.35% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 17259176 17264808 +0.03% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 17259304 17264936 +0.03% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 17259333 17264965 +0.03% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 3142628 3148262 +0.18% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 17259509 17265141 +0.03% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 20405680 20416944 +0.06% However overall Select performance is down and involves more allocs, due to having to do more than a simple map lookup to resolve a symbol and that all the strings returned are allocated: benchmark old ns/op new ns/op delta BenchmarkQuerierSelect/Block/1of1000000-4 506092636 862678244 +70.46% BenchmarkQuerierSelect/Block/10of1000000-4 505638968 860917636 +70.26% BenchmarkQuerierSelect/Block/100of1000000-4 505229450 882150048 +74.60% BenchmarkQuerierSelect/Block/1000of1000000-4 515905414 862241115 +67.13% BenchmarkQuerierSelect/Block/10000of1000000-4 516785354 874841110 +69.29% BenchmarkQuerierSelect/Block/100000of1000000-4 540742808 907030187 +67.74% BenchmarkQuerierSelect/Block/1000000of1000000-4 815224288 1181236903 +44.90% benchmark old allocs new allocs delta BenchmarkQuerierSelect/Block/1of1000000-4 4000020 6000020 +50.00% BenchmarkQuerierSelect/Block/10of1000000-4 4000038 6000038 +50.00% BenchmarkQuerierSelect/Block/100of1000000-4 4000218 6000218 +50.00% BenchmarkQuerierSelect/Block/1000of1000000-4 4002018 6002018 +49.97% BenchmarkQuerierSelect/Block/10000of1000000-4 4020018 6020018 +49.75% BenchmarkQuerierSelect/Block/100000of1000000-4 4200018 6200018 +47.62% BenchmarkQuerierSelect/Block/1000000of1000000-4 6000018 8000019 +33.33% benchmark old bytes new bytes delta BenchmarkQuerierSelect/Block/1of1000000-4 176001468 227201476 +29.09% BenchmarkQuerierSelect/Block/10of1000000-4 176002620 227202628 +29.09% BenchmarkQuerierSelect/Block/100of1000000-4 176014140 227214148 +29.09% BenchmarkQuerierSelect/Block/1000of1000000-4 176129340 227329348 +29.07% BenchmarkQuerierSelect/Block/10000of1000000-4 177281340 228481348 +28.88% BenchmarkQuerierSelect/Block/100000of1000000-4 188801340 240001348 +27.12% BenchmarkQuerierSelect/Block/1000000of1000000-4 304001340 355201616 +16.84% Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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Brian Brazil
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48d25e6fe7 |
Reduce memory used by postings offset table.
Rather than keeping the offset of each postings list, instead keep the nth offset of the offset of the posting list. As postings list offsets have always been sorted, we can then get to the closest entry before the one we want an iterate forwards. I haven't done much tuning on the 32 number, it was chosen to try not to read through more than a 4k page of data. Switch to a bulk interface for fetching postings. Use it to avoid having to re-read parts of the posting offset table when querying lots of it. For a index with what BenchmarkHeadPostingForMatchers uses RAM for r.postings drops from 3.79MB to 80.19kB or about 48x. Bytes allocated go down by 30%, and suprisingly CPU usage drops by 4-6% for typical queries too. benchmark old ns/op new ns/op delta BenchmarkPostingsForMatchers/Block/n="1"-4 35231 36673 +4.09% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 563380 540627 -4.04% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 536782 534186 -0.48% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 533990 541550 +1.42% BenchmarkPostingsForMatchers/Block/i=~".*"-4 113374598 117969608 +4.05% BenchmarkPostingsForMatchers/Block/i=~".+"-4 146329884 139651442 -4.56% BenchmarkPostingsForMatchers/Block/i=~""-4 50346510 44961127 -10.70% BenchmarkPostingsForMatchers/Block/i!=""-4 41261550 35356165 -14.31% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 112544418 116904010 +3.87% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 112487086 116864918 +3.89% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 41094758 35457904 -13.72% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 41906372 36151473 -13.73% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 147262414 140424800 -4.64% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 28615629 27872072 -2.60% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 147117177 140462403 -4.52% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 175096826 167902298 -4.11% benchmark old allocs new allocs delta BenchmarkPostingsForMatchers/Block/n="1"-4 4 6 +50.00% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 7 11 +57.14% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 7 11 +57.14% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 15 17 +13.33% BenchmarkPostingsForMatchers/Block/i=~".*"-4 100010 100012 +0.00% BenchmarkPostingsForMatchers/Block/i=~".+"-4 200069 200040 -0.01% BenchmarkPostingsForMatchers/Block/i=~""-4 200072 200045 -0.01% BenchmarkPostingsForMatchers/Block/i!=""-4 200070 200041 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 100013 100017 +0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 100017 100023 +0.01% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 200073 200046 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 200075 200050 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 200074 200049 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 111165 111150 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 200078 200055 -0.01% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 311282 311238 -0.01% benchmark old bytes new bytes delta BenchmarkPostingsForMatchers/Block/n="1"-4 264 296 +12.12% BenchmarkPostingsForMatchers/Block/n="1",j="foo"-4 360 424 +17.78% BenchmarkPostingsForMatchers/Block/j="foo",n="1"-4 360 424 +17.78% BenchmarkPostingsForMatchers/Block/n="1",j!="foo"-4 520 552 +6.15% BenchmarkPostingsForMatchers/Block/i=~".*"-4 1600461 1600482 +0.00% BenchmarkPostingsForMatchers/Block/i=~".+"-4 24900801 17259077 -30.69% BenchmarkPostingsForMatchers/Block/i=~""-4 24900836 17259151 -30.69% BenchmarkPostingsForMatchers/Block/i!=""-4 24900760 17259048 -30.69% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",j="foo"-4 1600557 1600621 +0.00% BenchmarkPostingsForMatchers/Block/n="1",i=~".*",i!="2",j="foo"-4 1600717 1600813 +0.01% BenchmarkPostingsForMatchers/Block/n="1",i!=""-4 24900856 17259176 -30.69% BenchmarkPostingsForMatchers/Block/n="1",i!="",j="foo"-4 24900952 17259304 -30.69% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",j="foo"-4 24900993 17259333 -30.69% BenchmarkPostingsForMatchers/Block/n="1",i=~"1.+",j="foo"-4 3788311 3142630 -17.04% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!="2",j="foo"-4 24901137 17259509 -30.69% BenchmarkPostingsForMatchers/Block/n="1",i=~".+",i!~"2.*",j="foo"-4 28693086 20405680 -28.88% Signed-off-by: Brian Brazil <brian.brazil@robustperception.io> |
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Tom Wilkie
|
de0a772b8e |
Port tsdb to use pkg/labels. (#6326)
* Port tsdb to use pkg/labels. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Get tests passing. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Remove useless cast. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Appease linters. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com> * Fix review comments Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Chris Marchbanks
|
c5b3f0221f |
Decode WAL in Separate Goroutine (#6230)
* Make WAL replay benchmark more representative Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com> * Move decoding records from the WAL into goroutine Decoding the WAL records accounts for a significant amount of time on startup, and can be done in parallel with creating series/samples to speed up startup. However, records still must be handled in order, so only a single goroutine can do the decoding. benchmark old ns/op new ns/op delta BenchmarkLoadWAL/batches=10,seriesPerBatch=100,samplesPerSeries=7200-8 481607033 391971490 -18.61% BenchmarkLoadWAL/batches=10,seriesPerBatch=10000,samplesPerSeries=50-8 836394378 629067006 -24.79% BenchmarkLoadWAL/batches=10,seriesPerBatch=1000,samplesPerSeries=480-8 348238658 234218667 -32.74% Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com> |
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Sharad Gaur
|
e94503ff5c |
Head Cardinality Status Page (#6125)
* Adding TSDB Head Stats like cardinality to Status Page Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Moving mutx to Head Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Renaming variabls Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Renaming variabls and html Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Removing unwanted whitespaces Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Adding Tests, Banchmarks and Max Heap for Postings Stats Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Adding more tests for postingstats and web handler Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Adding more tests for postingstats and web handler Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Remove generated asset file that is no longer used Signed-off-by: Chris Marchbanks <csmarchbanks@gmail.com> * Changing comment and variable name for more readability Signed-off-by: Sharad Gaur <sgaur@splunk.com> * Using time.Duration in postings status function and removing refresh button from web page Signed-off-by: Sharad Gaur <sgaur@splunk.com> |
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Krasi Georgiev
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81d284f806
|
Merge the 2.13 release branch to master (#6117) | ||
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Ganesh Vernekar
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4dfc7a2e77
|
Remove unnecessary lock in loadWAL (#6107)
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Ganesh Vernekar
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53ea6d6390
|
Allocate the shards only once while reading WAL (#6093)
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Callum Styan
|
3344bb5c33 |
Move WAL watcher code to tsdb/wal package. (#5999)
* Move WAL watcher code to tsdb/wal package. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Fix tests after moving WAL watcher code. Signed-off-by: Callum Styan <callumstyan@gmail.com> * Lint fixes. Signed-off-by: Callum Styan <callumstyan@gmail.com> |
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li mengyang
|
1c6d2194c4 |
fix spelling mistakes in docs (#5952)
Signed-off-by: hwdef <hwdef97@gmail.com> |
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Ganesh Vernekar
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5ecef3542d
|
Cleanup after merging tsdb into prometheus
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
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Ganesh Vernekar
|
7cf09b0395
|
Moving tsdb into its own subdirectory
Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in> |
Renamed from head.go (Browse further)