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1167 Commits

Author SHA1 Message Date
Aliaksandr Valialkin
a6086cde78 lib/storage: limit the number of metricIDs in tag->metricIDs row 
This reduces the overhead on index and metaindex in lib/mergeset
 2019-09-24 00:49:51 +03:00
Aliaksandr Valialkin
c9063ece66 lib/storage: share tsids across all the partSearch instances 
This should reduce memory usage when big number of time series matches the given query.
 2019-09-23 22:35:15 +03:00
Aliaksandr Valialkin
4e26ad869b lib/{storage,mergeset}: verify PrepareBlock callback results 
Do not touch the first and the last item passed to PrepareBlock
in order to preserve sort order of mergeset blocks.
 2019-09-23 20:43:13 +03:00
Aliaksandr Valialkin
0772191975 lib/mergeset: detect whether we are in test by executable suffix 2019-09-22 23:12:15 +03:00
Aliaksandr Valialkin
48999e5396 lib/workingsetcache: remove data race when resetting c.misses 2019-09-22 19:36:49 +03:00
Aliaksandr Valialkin
0adebae1f8 lib/storage: generate the first tag->metricIDs item in a mergeset block with a single metricID 
The first item from each mergeset block goes into index (lib/mergeset.blockHeader),
so it must be short in order to reduce index size.
 2019-09-22 19:21:33 +03:00
Aliaksandr Valialkin
0686ac52c3 lib/{storage,mergeset}: merge tag->metricID rows into tag->metricIDs rows for common tag values 
This should improve lookup performance if the same `label=value` pair exists
in big number of time series.
This should also reduce memory usage for mergeset data cache, since `tag->metricIDs` rows
occupy less space than the original `tag->metricID` rows.
 2019-09-20 22:06:41 +03:00
Aliaksandr Valialkin
68722c3c74 lib/encoding: optimize UnmarshalUint* and UnmarshalInt* 2019-09-20 13:08:16 +03:00
Aliaksandr Valialkin
a544f49c2b lib/storage: optimize selecting all the metricIDs by scanning MetricID->TSID entries instead of tag->MetricID entries 
The number of MetricID->TSID entries is smaller than the number of tag->MetricID entries
and MetricID->TSID entries are usually shorter than tag->MetricID entries.
This should improve performance when selecting all the metricIDs.
 2019-09-20 11:54:10 +03:00
Aliaksandr Valialkin
00cfb2d2b9 lib/mergeset: rename misleading mergeSmallParts to mergeExistingParts 2019-09-19 21:48:20 +03:00
Aliaksandr Valialkin
37dc223e25 lib/mergeset: use sort.IsSorted instead of sort.SliceIsSorted in inmemoryBlock.isSorted in order to reduce memory allocations 2019-09-19 20:13:08 +03:00
Aliaksandr Valialkin
a84fe76677 lib/storage: use sort.Sort instead of sort.slice in getSortedMetricIDs 2019-09-19 20:07:22 +03:00
Aliaksandr Valialkin
3a697a935a lib/storage: skip duplicate call to intersectMetricIDsWithTagFilter on zero successful intersects 2019-09-19 17:49:56 +03:00
Aliaksandr Valialkin
51a21c7d4b lib/mergeset: fill partHeader.firstItem on first block flush 2019-09-19 17:48:09 +03:00
Aliaksandr Valialkin
3d83f5d334 lib/storage: mark tag filter returning errFallbackToMetricNameMatch as useless 
This will save CPU on subsequent calls for this filter
 2019-09-18 19:10:32 +03:00
Aliaksandr Valialkin
8d35718dc6 lib/storage: properly construct keys for uselessTagFiltersCache and register useless negative tag filters there 2019-09-17 23:20:27 +03:00
Aliaksandr Valialkin
0c8057924f lib/mergeset: properly check for sorted block headers 
Fix a typo for https://github.com/VictoriaMetrics/VictoriaMetrics/issues/181
 2019-09-13 21:59:29 +03:00
hanzai
e2274714b1 lib/workingsetcache: adjust switching from mode=split to mode=whole smoothly and load cachefile successfully 2019-09-13 19:13:01 +03:00
Aliaksandr Valialkin
bad53e4207 lib/mergeset: dynamically calculate the maximum number of items per part, which can be cached in OS page cache 2019-09-11 14:53:45 +03:00
Aliaksandr Valialkin
88f8670ede lib/fs: add MustStopDirRemover for waiting until pending directories are removed on graceful shutdown 
This patch is mainly required for laggy NFS. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/162
 2019-09-05 11:13:17 +03:00
Aliaksandr Valialkin
9eb5de334f lib/storage: typo fix 2019-09-04 19:58:01 +03:00
Aliaksandr Valialkin
16dd145586 lib/storage: remove duplicate tag keys on MetricName.Marshal call 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/172
 2019-09-04 18:13:45 +03:00
Aliaksandr Valialkin
4862e93024 lib/fs: try harder with directory removal on NFS in the event of temporary lock 
Do not give up after 11 attempts of directory removal on laggy NFS.

Add `vm_nfs_dir_remove_failed_attempts_total` metric for counting the number of failed attempts
on directory removal.

Log failed attempts on directory removal after long sleep times.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/162
 2019-09-04 12:24:50 +03:00
Aliaksandr Valialkin
e1d76ec1f3 lib/storage: invalidate tagFilters -> TSIDS cache when newly added index data becomes visible to search 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/163
 2019-08-29 15:08:35 +03:00
Aliaksandr Valialkin
aeaa5de5fe lib/prombp: apply ba06b47c16 
The following commands used:

gofmt -r '(uint64(x)&0x7F)<<shift -> uint64(x&0x7F)<<shift' -w ./lib/prompb/
gofmt -r '(int64(x)&0x7F)<<shift -> int64(x&0x7F)<<shift' -w ./lib/prompb/
 2019-08-29 13:35:27 +03:00
Aliaksandr Valialkin
9196c085a7 all: port to FreeBSD on GOARCH=amd64 2019-08-28 01:19:23 +03:00
Aliaksandr Valialkin
2655220c58 lib/storage: go fmt 2019-08-27 14:29:51 +03:00
Aliaksandr Valialkin
bf915fc0db lib/storage: report proper maxMetrics limit when more than -search.maxUniqueTimeseries series match the given filters 2019-08-27 14:21:42 +03:00
Aliaksandr Valialkin
2fc157ff7a lib/storage: properly handle (?i) in the tag filter regexp 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/161
 2019-08-26 00:44:45 +03:00
Aliaksandr Valialkin
0dc0006f34 lib/storage: calculate the maximum number of rows per small part from -memory.allowedPercent 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/159

This simplifies error detection additionally to the `vm_rows_ignored_total` counters.
 2019-08-25 15:31:47 +03:00
Aliaksandr Valialkin
4b688fffee lib/storage: calculate the maximum number of rows per small part from -memory.allowedPercent 
This should improve query speed over recent data on machines with big amounts of RAM
 2019-08-25 14:41:12 +03:00
Aliaksandr Valialkin
1402a6b981 lib/storage: properly limit the number of output rows in small and big parts storage 
Previously small parts storage didn't take into account the available disk space for big parts.
 2019-08-25 14:41:12 +03:00
Aliaksandr Valialkin
3308279c4e lib/storage: remove outdated comment on maxRowsPerSmallPart 
The commend became outdated after the commit ed6ac1a5df027f0dfc22448e3b27c26b6f77c67a,
which stops merging of small parts on graceful shutdown instead of waiting
for their completion.
 2019-08-25 13:47:32 +03:00
Aliaksandr Valialkin
ac004665b5 all: return 503 http error if service is temporarily unavailable 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/156
 2019-08-23 09:55:07 +03:00
Aliaksandr Valialkin
8c03a8c4b4 app/vminsert: allow setting the maximum number of labels per time series via -maxLabelsPerTimeseries 2019-08-23 08:45:26 +03:00
Aliaksandr Valialkin
380cae23a0 lib/storage: add benchmarks for regexp filter match / mismatch 
These benchmarks allow estimate the performance of regexp filters in promql
 2019-08-22 16:36:42 +03:00
Aliaksandr Valialkin
4f738c8a15 lib/storage: try slower path for searching the tag filter with the minimum number of matching time series before giving up with increase -search.maxUniqueTimeseries error 2019-08-19 16:04:21 +03:00
Aliaksandr Valialkin
c23b66a1ad lib/storage: pre-allocate memory for blockHeader slice in unmarshalBlockHeaders 
This reduces memory usage and memory fragmentation when working with big number of time series
 2019-08-19 12:46:33 +03:00
Aliaksandr Valialkin
483de1cc06 lib/workingsetcache: automatically detect when it is better to double cache capacity 2019-08-15 22:57:55 +03:00
Aliaksandr Valialkin
5b41122292 lib/storage: properly cache tagFilters -> TSIDs entries from historical index 2019-08-14 02:29:58 +03:00
Aliaksandr Valialkin
964c296f96 lib/storage: compress contents of cache for tagFilters -> TSIDs 
This should increase cache capacity
 2019-08-14 02:29:52 +03:00
Aliaksandr Valialkin
09fc6e22e5 all: use workingsetcache instead of fastcache 
This should reduce the amount of RAM required for processing time series
with non-zero churn rate.

The previous cache behavior can be restored with `-cache.oldBehavior` command-line flag.
 2019-08-13 21:39:34 +03:00
Aliaksandr Valialkin
99c37c2c96 lib/fs: add test for IsTemporaryFileName 2019-08-13 21:33:45 +03:00
Aliaksandr Valialkin
ec1b185991 lib/storage: remove broken BenchmarkIndexDBSearchTSIDs 2019-08-13 20:22:08 +03:00
Aliaksandr Valialkin
0967683ae9 lib: move common code for creating flock.lock file into fs.CreateFlockFile 2019-08-13 01:45:46 +03:00
Aliaksandr Valialkin
5d8d110010 lib/fs: atomically create file with the given contents on WriteFileAtomically 
This should prevent from `transaction` and `metadata.json` files corruption
on unclean shutdown such as OOM, `kill -9`, power loss, etc.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/148
 2019-08-12 15:02:55 +03:00
Aliaksandr Valialkin
0b488f1e37 lib/storage: do not change timestamps to constant rate if values are constant or have constant delta 
This breaks the original timestamps, which results in issues like
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/120 and
https://github.com/VictoriaMetrics/VictoriaMetrics/issues/141 .
 2019-08-06 15:40:07 +03:00
Aliaksandr Valialkin
b8bb74ffc6 app/vmstorage: add vm_concurrent_addrows_* metrics for tracking concurrency for Storage.AddRows calls 
Track also the number of dropped rows due to the exceeded timeout
on concurrency limit for Storage.AddRows. This number is tracked in `vm_concurrent_addrows_dropped_rows_total`
 2019-08-06 15:08:33 +03:00
Aliaksandr Valialkin
8822079b77 lib/storage: properly reset partSearch.fetchData in partSearch.reset 2019-08-05 09:56:06 +03:00
Aliaksandr Valialkin
47e4b50112 app/vmselect: optimize /api/v1/series by skipping storage data 
Fetch and process only time series metainfo.
 2019-08-04 23:01:28 +03:00
Aliaksandr Valialkin
10caad4728 lib/decimal: modernize tests a bit 2019-07-31 21:10:03 +03:00
Aliaksandr Valialkin
c14fd6c43f lib/storage: typo fixes after a77e88db7d 2019-07-30 15:38:52 +03:00
Aliaksandr Valialkin
a77e88db7d lib/storage: fix matching against tag filter with empty name 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/137
 2019-07-30 15:15:09 +03:00
Aliaksandr Valialkin
f586e1f83c lib/storage: add metrics for calculating skipped rows outside the retention 
The metrics are:

    - vm_too_big_timestamp_rows_total
    - vm_too_small_timestamp_rows_total
 2019-07-26 14:11:01 +03:00
Aliaksandr Valialkin
b339890dca lib/encoding/zstd: go fmt 2019-07-25 01:37:16 +03:00
Aliaksandr Valialkin
6c4ca89d75 lib/encoding/zstd: disable CRC checks in pure Go build 
This should give slightly better compression and decompressions performance.
Additionally this shaves off 4 bytes per each compressed block.
 2019-07-24 19:17:16 +03:00
Aliaksandr Valialkin
d07f616609 lib/encoding: small fixes in tests after the PR #114 2019-07-23 19:37:51 +03:00
Roman Khavronenko
5bf4e5ffb5 all: add Pure Go build (pull request #114) 
Updates #94
 2019-07-23 19:26:39 +03:00
Aliaksandr Valialkin
0f2ecde0e6 lib/encoding: improve gauge series detection 
- Series with negative values are always gauges
- Counters may only have increasing values with possible counter resets

This should improve compression ratio for gauge series which
were previously mistakenly detected as counters.
 2019-07-20 14:05:09 +03:00
Aliaksandr Valialkin
daba0cdb05 lib/netutil: do not count timeouts as network errors 2019-07-15 23:05:35 +03:00
Aliaksandr Valialkin
e75d5f47c4 lib/storage: remove unused function isTooBigTimeRangeForDateMetricIDs 2019-07-12 02:28:23 +03:00
Aliaksandr Valialkin
fc90ebf43c lib/storage: do not reduce maxMetrics on time ranges exceeding maxDaysForDateMetricIDs 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/95
 2019-07-12 02:20:34 +03:00
Aliaksandr Valialkin
2bd1a01d1a lib/storage: do not pollute inverted index with data for samples outside the retention period 2019-07-11 17:04:56 +03:00
Aliaksandr Valialkin
d031e04023 lib/storage: use fast path for orSuffix when searching for metricIDs against plain tag value 2019-07-11 14:48:37 +03:00
Aliaksandr Valialkin
43ea4ce428 lib/storage: remember and skip individual tag filters matching too many metrics 
This saves CPU time by skipping useless matching for individual tag filters.
 2019-07-11 14:48:30 +03:00
Aliaksandr Valialkin
1fe6d784d8 all: consistency renaming: bytesSize -> sizeBytes 2019-07-10 00:47:36 +03:00
Aliaksandr Valialkin
56c154f45b all: add vm_data_size_bytes metrics for easy monitoring of on-disk data size and on-disk inverted index size 2019-07-04 19:42:30 +03:00
Aliaksandr Valialkin
c7034fc51b lib/memory: attempt #3 to determine memory limit for LXC container 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/84
 2019-07-01 14:01:13 +03:00
Aliaksandr Valialkin
a41955863a lib/mergeset: make fmt 2019-06-29 14:25:26 +03:00
Aliaksandr Valialkin
2ecb117082 lib/storage: skip non-matching metricIDs in sortedFilter 
This should improve performance for big sorteFilter lists.
 2019-06-29 13:48:32 +03:00
Aliaksandr Valialkin
0c88afa386 lib/mergeset: speed up binarySearchKey by skipping the first item during binary search 2019-06-29 13:45:49 +03:00
Aliaksandr Valialkin
828078eb45 lib/memory: remove TestReadLXCMemoryLimit, since it doesnt work in Travis 2019-06-28 18:22:46 +03:00
Aliaksandr Valialkin
7b59466667 lib/memory: attempt #2 to determine memory limit inside LXC container 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/84
 2019-06-28 18:08:15 +03:00
Aliaksandr Valialkin
593bd35aaa lib/memory: an attempt to read proper memory limit inside LXC container 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/84
 2019-06-28 15:34:30 +03:00
Aliaksandr Valialkin
c1be1e4342 lib/storage: optimize time series search by regexp filter 
This should improve search speed on label filters like `{foo=~"bar.+baz"}`
 2019-06-27 16:17:43 +03:00
Aliaksandr Valialkin
683bf2a11f lib/storage: make sure non-nil args are passed to openIndexDB 2019-06-25 20:10:04 +03:00
Aliaksandr Valialkin
eb2283a029 lib/storage: reduce too big maxMetrics in getTagFilterWithMinMetricIDsCountAdaptive 
This should improve performance on inverted index search for big amount of unique time series
when big -search.maxUniqueTimeseries is set.
 2019-06-25 19:55:27 +03:00
Aliaksandr Valialkin
e8377011ab lib/storage: free up memory from caches owned by indexDB when it is deleted 2019-06-25 14:42:44 +03:00
Aliaksandr Valialkin
33ea2120c3 lib/storage: use unversioned keys for tag cache in extDB 
Data in ExtDB cannot be changed, so it is OK to use unversioned keys for tag cache.
This should improve performance for index lookups over big amount of time series.
 2019-06-25 13:08:58 +03:00
Aliaksandr Valialkin
cf63669303 lib/storage: skip searching in extDB if it doesn't contain items for the given time range 
This should improve inverted index search performance for big amount
of unique time series when the search is performed only on recent data.
 2019-06-25 13:00:37 +03:00
Aliaksandr Valialkin
af2ceaaa0b lib/storage: mention source parts on merge error 
This should improve determining broken source part.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/76
 2019-06-24 14:08:43 +03:00
Aliaksandr Valialkin
e88a03323a all: initial stubs for Windows support; see https://github.com/VictoriaMetrics/VictoriaMetrics/issues/70 2019-06-20 20:07:10 +03:00
Aliaksandr Valialkin
80db24386e lib/storage: typo fixes found by golangci-lint; updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/69 2019-06-20 14:37:55 +03:00
Aliaksandr Valialkin
296c14317f lib/netutil: remove unused TCPListener.name; updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/69 2019-06-20 14:36:15 +03:00
Aliaksandr Valialkin
a78b3dba7f app/vmstorage: add vm_cache_entries{type="storage/hour_metric_ids"} metric for tracking active time series count 2019-06-19 18:36:47 +03:00
Aliaksandr Valialkin
710d6c33ea lib/prompb: remove superflouos bytes copying in ReadSnappy 2019-06-18 20:37:51 +03:00
Aliaksandr Valialkin
6d6c9eb1f8 lib/flagutil: remove unused package 2019-06-18 10:43:55 +03:00
Aliaksandr Valialkin
d2c801029b lib/storage: persist metric ids for the current and the previous hour on graceful shutdown 
This should improve performance after restart when the db contains a lot of time series
with high time series churn (i.e. metrics from Kubernetes with many pods and frequent deployments)
 2019-06-14 07:55:14 +03:00
Aliaksandr Valialkin
26f8d7ea1b lib/fs: sync parent dir in MustRemoveAll only if it exists 
The parent directory may be non-existing when the deleted directory
didn't exist before the MustRemoveAll call
 2019-06-12 02:14:44 +03:00
Aliaksandr Valialkin
419197ba08 lib/fs: consolidate *RemoveAll* funcs into a single MustRemoveAll func 
The func syncs parent dir in order to persist directory removal
in the event of power loss
 2019-06-12 01:53:46 +03:00
Aliaksandr Valialkin
c1276edab5 lib/fs: panic with fatal error when directories cannot be removed 
Unremoved directories may lead to inconsistent data directory,
so VictoriaMetrics will fail to start next time.

So panic on the first error when trying to remove directory in order
to simplify recover process.
 2019-06-12 01:20:54 +03:00
Aliaksandr Valialkin
2322c9a45a lib/fs: attempt #2 to work around NFS issue with directory removal 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
 2019-06-12 01:07:05 +03:00
Aliaksandr Valialkin
935bfd7a18 lib/fs: consistency renaming SyncPath -> MustSyncPath, since it doesnt return error 2019-06-11 23:13:49 +03:00
Aliaksandr Valialkin
3dd36b8088 lib/fs: make sure the created directory remains visible in the fs in the event of power loss 
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/63
 2019-06-11 23:08:09 +03:00
Aliaksandr Valialkin
afb964670a lib/fs: use filepath.Dir instead of filepath.Split, since the filename is unused 2019-06-11 22:54:26 +03:00
Aliaksandr Valialkin
20fc0e0e54 lib/{storage,mergeset}: sync filenames inside part when finalizing the part 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/63
 2019-06-11 21:51:13 +03:00
Aliaksandr Valialkin
ac7b186f13 all: try hard removing directory with contents 
Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
 2019-06-11 01:57:59 +03:00
Aliaksandr Valialkin
cbe692f0e2 app/vmselect: add /api/v1/labels/count handler for quick detection of labels with the maximum number of distinct values 2019-06-10 19:55:38 +03:00
Aliaksandr Valialkin
7b6623558f lib/storage: skip adaptive searching for tag filter matching the minimum number of metrics if the identical previous search didn't found such filter 
This should improve speed for searching metrics among high number of time series
with high churn rate like in big Kubernetes clusters with frequent deployments.
 2019-06-10 14:07:39 +03:00
Aliaksandr Valialkin
a1351bbaee lib/storage: factor out getTagFilterWithMinMetricIDsCountAdaptive from updateMetricIDsForTagFilters 2019-06-10 13:26:44 +03:00
Aliaksandr Valialkin
b4d707d9bb lib/storage: give clearer names to more functions 2019-06-10 13:01:23 +03:00
Aliaksandr Valialkin
bee7298f81 lib/storage: give more clear names to functions 2019-06-10 12:50:44 +03:00
Aliaksandr Valialkin
dbd217b8f0 lib/storage: test GetSeriesCount 2019-06-10 12:43:34 +03:00
Aliaksandr Valialkin
4d936b1524 lib/storage: make getSeriesCount func indexSearch method 2019-06-10 12:29:11 +03:00
Aliaksandr Valialkin
d37924900b lib/storage: optimize time series lookup for recent hours when the db contains many millions of time series with high churn rate (aka frequent deployments in Kubernetes) 2019-06-09 19:13:56 +03:00
Aliaksandr Valialkin
a3e26de45e lib/procutil: typo fix in comment to WaitForSigterm 2019-06-04 17:31:47 +03:00
Aliaksandr Valialkin
28f6c36ab4 lib/storage: tune updating a map with today`s metric ids 
- Increase update iterval from 1s to 10s. This should reduce CPU usage
  for large amounts of metric ids with constant churn.
- Reduce pendingTodayMetricIDsLock lock duration during the update.
 2019-06-02 21:58:16 +03:00
Aliaksandr Valialkin
4794f894a4 lib/storage: speed up checking metricID existence in the list for the current date 2019-06-02 18:34:08 +03:00
Aliaksandr Valialkin
e307a4d92c lib/timerpool: use timer pool in concurrency limiters 
This should reduce the number of memory allocations in highly loaded system
 2019-05-28 17:20:10 +03:00
Aliaksandr Valialkin
54fb8b21f9 all: fix misspellings 2019-05-25 21:51:11 +03:00
Aliaksandr Valialkin
d6523ffe90 Makefile: add -s flag to go fmt in make fmt command 2019-05-25 21:43:35 +03:00
Aliaksandr Valialkin
6b0ae332f8 lib/encoding: add vm_zstd_block_{compress|decompress}_calls_total for determining the number CompressZSTD / DecompressZSTD calls 2019-05-24 13:01:02 +03:00
Aliaksandr Valialkin
6fb9dd09f5 lib/encoding: add vm_zstd_block_{original|compressed}_bytes_total metrics for rough estimation of block compression ratio 2019-05-24 12:34:32 +03:00
Aliaksandr Valialkin
19b6643e5c lib/encoding: substitute CompressZSTD with CompressZSTDLevel 2019-05-24 12:32:55 +03:00
Aliaksandr Valialkin
08b889ef09 lib/httpserver: add -http.disableResponseCompression flag, which may help saving CPU resources at the cost of higher network bandwidth usage 2019-05-24 12:18:40 +03:00
Aliaksandr Valialkin
674888fdc9 lib/decimal: add a comment explaining weird code in maxUpExponent. Fixes #29 2019-05-23 17:18:35 +03:00
Aliaksandr Valialkin
1836c415e6 all: open-sourcing single-node version 2019-05-23 00:18:06 +03:00