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VictoriaMetrics/app/vmselect
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YuDong Tang cab3ef8294
app/vmselect:add command-line flag -search.inmemoryBufSizeBytes (#6869) 
add command-line flag `-search.inmemoryBufSizeBytes` for configuring size of in-memory buffers used by vmselect during processing of vmstorage responses. A new summary metric `vm_tmp_blocks_inmemory_file_size_bytes` is exposed to show the size of the buffer during requests processing. 

The new setting can be used by experienced users to adjust memory usage by vmselect when processing
many small read requests. Instead of allocating 4MB buffers each time, vmselect can be instructed to lower
the buffer size via `-search.inmemoryBufSizeBytes`. To make the decision whether this flag needs to be adjusted
users can consult with `vm_tmp_blocks_inmemory_file_size_bytes` which shows the actual size of buffers used
during query processing.

----------

The detailed information of this PR can be found in
https://github.com/VictoriaMetrics/VictoriaMetrics/pull/6851

### Checklist

The following checks are **mandatory**:

- [ ] My change adheres [VictoriaMetrics contributing
guidelines](https://docs.victoriametrics.com/contributing/).

---------

Co-authored-by: hagen1778 <roman@victoriametrics.com>
2024-08-26 14:37:45 +02:00
..
clusternative all: fix golangci-lint(revive) warnings after 0c0ed61ce7 2024-04-03 03:00:45 +03:00
deployment Rootless docker images by default (#358) 2020-03-27 21:18:32 +02:00
graphite app/vmselect/graphite: respect denyPartialResponse for graphite requests (#6748) 2024-08-07 12:34:23 +02:00
graphiteql app/vmselect: use strings.EqualFold instead of strings.ToLower where appropriate 2024-05-12 10:21:24 +02:00
multiarch all: run apk update && apk upgrade in base Alpine Docker image in order to get all the recent security fixes 2023-02-09 14:03:02 -08:00
netstorage app/vmselect:add command-line flag -search.inmemoryBufSizeBytes (#6869) 2024-08-26 14:37:45 +02:00
prometheus all: consistently use 'any' instead of 'interface{}' 2024-07-10 00:23:26 +02:00
promql app/vmseleсt/promql: fix calculation of histogram buckets 2024-08-15 10:13:54 +02:00
querystats all: consistently use stringsutil.JSONString() for formatting JSON strings with fmt.* functions instead of using "%q" formatter 2024-07-17 14:01:37 +02:00
searchutils lib/logstorage: work-in-progress 2024-06-27 14:21:03 +02:00
static/css app/vmselect: properly serve static css for /select/.../metric-relabel-debug page 2022-12-10 03:04:43 -08:00
vmui make vmui-update 2024-08-01 14:45:29 +02:00
main.go make go vet happy 2024-08-19 21:41:44 +02:00
Makefile Add build support for loong64 (#6222) 2024-05-10 14:32:05 +02:00
README.md app/vmselect: expose vmui at /vmselect/<accountID>/vmui/ instead of /vmselect/<accountID>/prometheus/vmui/ 2021-07-10 12:32:21 +03:00
vmui.go app/vmselect: add missing whitespace into the description for -vmui.defaultTimezone command-line flag 2024-02-01 14:49:48 +02:00

README.md

vmselect performs the following tasks:

  • Splits incoming selects to tasks for vmstorage nodes and issues these tasks to all the vmstorage nodes in the cluster.

  • Merges responses from all the vmstorage nodes and returns a single response.

The vmui directory contains static contents built from app/vmui package with make vmui-update command. The vmui page is available at http://<vmselect>:8481/select/<accountID>/vmui/.