Aliaksandr Valialkin
b0b8f05fa4
lib/mergeset: properly reset bsr.bhIdx after the call to blockStreamReader.readNextBHS()
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The issue has been introduced in 58b40f514chttps://github.com/VictoriaMetrics/VictoriaMetrics/issues/3343
2022-11-16 21:22:51 +02:00
Aliaksandr Valialkin
454060fd78
lib/mergeset: remove string allocation and copying when unmarshaling blockHeader
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This should reduce CPU usage for the case from https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3343
2022-11-16 12:10:14 +02:00
Aliaksandr Valialkin
962ed46583
lib/mergeset: optimize mergeInmemoryBlocks() function
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Do not spend CPU time on converting inmemoryBlock structs to inmemoryPart structs.
Just merge inmemoryBlock structs directly.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2249
2022-07-28 00:05:45 +03:00
Aliaksandr Valialkin
3bbe9054d3
lib/mergeset: do not update blockStreamReader.bh.firstItem during the merge
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Just read the current item directly from blockStreamReader.Block.Items
with the helper method - blockStreamReader.CurrItem()
2022-07-28 00:05:43 +03:00
Aliaksandr Valialkin
ecf4f7bf21
lib/mergeset: consistency renaming: ip->mp for inmemoryPart vars
2022-03-03 17:12:25 +02:00
Aliaksandr Valialkin
02b2bfcff3
lib/bytesutil: split Resize* funcs to MayOverallocate and NoOverallocate for more fine-grained control over memory allocations
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Follow-up for f4989edd96https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2007
2022-02-01 11:20:20 +02:00
Aliaksandr Valialkin
6232eaa938
lib/bytesutil: split Resize() into ResizeNoCopy() and ResizeWithCopy() functions
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Previously bytesutil.Resize() was copying the original byte slice contents to a newly allocated slice.
This wasted CPU cycles and memory bandwidth in some places, where the original slice contents wasn't needed
after slize resizing. Switch such places to bytesutil.ResizeNoCopy().
Rename the original bytesutil.Resize() function to bytesutil.ResizeWithCopy() for the sake of improved readability.
Additionally, allocate new slice with `make()` instead of `append()`. This guarantees that the capacity of the allocated slice
exactly matches the requested size. The `append()` could return a slice with bigger capacity as an optimization for further `append()` calls.
This could result in excess memory usage when the returned byte slice was cached (for instance, in lib/blockcache).
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2007
2022-01-25 15:28:42 +02:00
Aliaksandr Valialkin
587132555f
lib/mergeset: reduce memory usage for inmemoryBlock by using more compact items representation
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This also should reduce CPU time spent by GC, since inmemoryBlock.items don't have pointers now,
so GC doesn't need visiting them.
2021-02-21 22:09:10 +02:00
Aliaksandr Valialkin
edf3ee2a9b
lib: dump compressed block contents on error during decompression
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This should improve detecting root cause for https://github.com/facebook/zstd/issues/2222
2020-08-15 14:51:14 +03:00
Aliaksandr Valialkin
d962568e93
all: use %w instead of %s for wrapping errors in fmt.Errorf
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This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
2020-06-30 23:33:46 +03:00
Aliaksandr Valialkin
fb9358635d
lib/storage: mention source parts on merge error
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This should improve determining broken source part.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/76
2019-06-24 14:09:46 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
