Aliaksandr Valialkin
f765985947
lib/fs: replace fs.OpenReaderAt with fs.MustOpenReaderAt
...
All the callers for fs.OpenReaderAt expect that the file will be opened.
So it is better to log fatal error inside fs.MustOpenReaderAt instead of leaving this to the caller.
2020-11-23 09:57:21 +02:00
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
a23806f486
lib/fs: clarify description for -fs.disableMmap command-line flag
2020-07-06 14:28:34 +03:00
Aliaksandr Valialkin
d5dddb0953
all: use %w instead of %s for wrapping errors in fmt.Errorf
...
This will simplify examining the returned errors such as httpserver.ErrorWithStatusCode .
See https://blog.golang.org/go1.13-errors for details.
2020-06-30 23:05:11 +03:00
Aliaksandr Valialkin
a560b4788e
lib/fs: go fmt
2020-06-23 23:02:39 +03:00
Aliaksandr Valialkin
8141541e61
lib/fs: fall back to cgo copy for copying the last 4KB of mmaped data
...
This probably should fix https://github.com/VictoriaMetrics/VictoriaMetrics/issues/581
2020-06-23 22:55:22 +03:00
Aliaksandr Valialkin
c970cb912c
lib/fs: an attempt to fix SIGBUS error by rounding mmap`ed region to multiple of 4KB pages
...
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/581
2020-06-23 13:39:49 +03:00
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
...
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
