Aliaksandr Valialkin
d120197676
lib/fs: optimize queries that read recent samples for big number of time series
...
Use standard copy() func instead of mmap-aware copy func for reading recently touched mmap-ed data.
This improves read performance by up to 4x.
2020-06-05 19:10:04 +03:00
Aliaksandr Valialkin
a6f16dcc11
lib/fs: do not use mmap for 32-bit arches by default, since they cannot map files bigger than 4GB in RAM
2020-05-12 20:22:09 +03:00
Aliaksandr Valialkin
b4afe562c1
lib/storage: postpone reading data from blocks during search
...
This eliminates the need for storing block data into temporary files on a single-node VictoriaMetrics
during heavy queries, which touch big number of time series over long time ranges.
This improves single-node VM performance on heavy queries by up to 2x.
2020-04-27 11:45:24 +03:00
Aliaksandr Valialkin
7ef7c9368e
lib/fs: typo fix: read blocks bigger than 8KB via pread() call instead of using mmap
2020-02-25 18:05:06 +02:00
Aliaksandr Valialkin
42864bb52f
all: do not clash flag description with back-quoted flag types
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See https://golang.org/pkg/flag/#PrintDefaults for more details.
2020-02-04 15:46:52 +02:00
Aliaksandr Valialkin
011a79da85
lib/fs: remove unused readerAt interface
2020-01-31 15:12:43 +02:00
Aliaksandr Valialkin
d70ba7eb37
lib/fs: optimize small reads for ReaderAt.MustReadAt by reading from memory-mapped space instead of reading from file descriptor
...
This should improve performance when reading many small blocks.
2020-01-30 15:09:05 +02:00
