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VictoriaMetrics/app/vmselect
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Alexander Frolov 1eb7ab1f77
vmselect: ensure default -search.maxConcurrentRequests is non-decreasing (#6996) 
### Describe Your Changes

vmselect determines the default value of `-search.maxConcurrentRequests`
multiplying the number of available CPUs by 2 if and only if the number
is small (to be precise <= 4). That leads
`-search.maxConcurrentRequests` is decreasing at the edge of these two
cases as shown below:
| CPUs | MaxConcurrentRequests | MaxConcurrentRequests (original
proposal) | MaxConcurrentRequests (updated proposal) |
|--------|--------|--------|--------|
| 1 | 2 | 2 | 2 |
| 2 | 4 (prev+2) | 4 (prev+2) | 4 (prev+2) |
| 3 | 6 (prev+2) | 6 (prev+2) | 6 (prev+2) |
| 4 | 8 (prev+2) | 8 (prev+2) | 8 (prev+2) |
| 5 | 5 __(prev-3)__ | 9 __(prev+1)__ | 10 __(prev+2)__ |
| 6 | 6 (prev+1) | 10 (prev+1) | 12 (prev+2) |
| 7 | 7 (prev+1) | 11 (prev+1) | 14 (prev+2) |
| 8 | 8 (prev+1) | 12 (prev+1) | 16 (prev+2) |

I propose to make the default value non-decreasing.
2024-09-30 12:44:54 +02:00
..
clusternative all: fix golangci-lint(revive) warnings after 0c0ed61ce7 2024-04-03 03:00:45 +03:00
deployment all: suppress InvalidDefaultArgInFrom warning emitted by docker build when building Docker packages via make package-* command 2024-09-03 14:05:43 +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 app/*/multiarch: return back empty value for TARGETARCH 2024-09-06 18:15:22 +02:00
netstorage app/vmselect:add command-line flag -search.inmemoryBufSizeBytes (#6869) 2024-08-26 14:37:45 +02:00
prometheus Introduce a flag for limiting the number of time series to delete (cluster version) (#7112) 2024-09-30 12:43:11 +02:00
promql app/vmselect/promql: consistently replace NaN data points with non-NaN values for range_first and range_last functions 2024-09-23 15:00:05 +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 app/{vmselect,vlselect}: run make vmui-update vmui-logs-update after 25a9802ca4 and 8657d03433 2024-09-27 13:51:58 +02:00
main.go vmselect: ensure default -search.maxConcurrentRequests is non-decreasing (#6996) 2024-09-30 12:44:54 +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/.