Commit graph

14 commits

Author SHA1 Message Date
Aliaksandr Valialkin
ed324aad66
lib/bytesutil: make sure that the string passed to FastStringMather.Match() is copied before using it as a key in the internal cache map
This prevents from possible corruption of the internal cache map
when the underlying byte slice used by the string key is modified.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3227
2022-10-14 09:52:18 +03:00
Aliaksandr Valialkin
b4bb1477fe
lib/regexutil: cache MatchString results for unoptimized regexps
This increases relabeling performance by 3x for unoptimized regexs
2022-09-30 12:28:25 +03:00
Aliaksandr Valialkin
c0aa10bd73
lib/bytesutil: move InternString() from lib/promscrape/discoverytutils to lib/bytesutil
lib/bytesutil is more appropriate place for InternString() function
2022-09-30 07:34:59 +03:00
Aliaksandr Valialkin
4afa25fb38
lib/bytesutil: add FastStringTransformer and use it in the rest of the code where needed 2022-09-28 10:39:42 +03:00
Aliaksandr Valialkin
4fb0f15322
all: readability improvements for query traces
- show dates in human-readable format, e.g. 2022-05-07, instead of a numeric value
- limit the maximum length of queries and filters shown in trace messages
2022-06-30 18:19:43 +03:00
Aliaksandr Valialkin
02b2bfcff3
lib/bytesutil: split Resize* funcs to MayOverallocate and NoOverallocate for more fine-grained control over memory allocations
Follow-up for f4989edd96

Updates https://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
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
76064ba9e7 Perform conversion from string to []byte according to rule #6 at https://golang.org/pkg/unsafe/#Pointer 2020-08-05 11:55:12 +03:00
Aliaksandr Valialkin
304f9499cf lib/bytesutil: prevent from garbage collecting s before returning from ToUnsafeBytes 2020-06-03 00:23:27 +03:00
Aliaksandr Valialkin
da19fffa08 all: rename ReadAt* to MustReadAt* in order to dont clash with io.ReaderAt 2020-01-30 15:16:16 +02:00
Artem Navoiev
e05500cbd4 add unittests for bytesutil and storage (#221) 2019-11-04 00:57:24 +02:00
Aliaksandr Valialkin
24ae3ef532 lib/prompb: remove superflouos bytes copying in ReadSnappy 2019-06-18 21:02:02 +03:00
Aliaksandr Valialkin
bdf696ef18 all: fix misspellings 2019-05-25 21:51:24 +03:00
Aliaksandr Valialkin
1836c415e6 all: open-sourcing single-node version 2019-05-23 00:18:06 +03:00