Aliaksandr Valialkin
caeb74f068
app/vmselect: reduce memory usage when query touches big number of time series
2020-11-04 17:04:04 +02:00
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
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
Aliaksandr Valialkin
cdcacaea6d
app/vmselect/netstorage: make fmt
2020-01-17 17:47:21 +02:00
Aliaksandr Valialkin
7327adbc86
app/vmselect/netstorage: limit the maximum size for in-memory buffer for temporary blocks file
...
This should reduce memory usage on systems with more than 8GB RAM.
2020-01-17 16:28:21 +02:00
Aliaksandr Valialkin
5b75984aa9
app/vmselect/netstorage: move MustAdviseSequentialRead to lib/fs
2019-12-23 23:16:11 +02:00
Aliaksandr Valialkin
4e9e1ca0f7
app/vmselect/netstorage: hint the OS that tmpBlocksFile is read almost sequentially
...
This became the case after b7ee2e7af2
2019-09-30 00:11:14 +03:00
Aliaksandr Valialkin
c1d3705be0
app/vmselect/netstorage: marshal block outside tmpBlocksFile.WriteBlock
...
This allows re-using the destination buffer for marshaling in the outer loop.
2019-09-28 21:07:13 +03:00
Aliaksandr Valialkin
1575a560f0
app/vmselect/netstorage: adaptively adjust the maximum inmemory file size for storing temporary blocks
...
The maximum inmemory file size now depends on `-memory.allowedPercent`.
This should improve performance and reduce the number of filesystem calls
on machines with big amounts of RAM when performing heavy queries
over big number of samples and time series.
2019-09-03 13:32:09 +03:00
Aliaksandr Valialkin
419197ba08
lib/fs: consolidate *RemoveAll* funcs into a single MustRemoveAll func
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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
ac7b186f13
all: try hard removing directory with contents
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Fixes https://github.com/VictoriaMetrics/VictoriaMetrics/issues/61
2019-06-11 01:57:59 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
