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add QPS in tidb_dashboard ref:#1209 #1252

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@qidi1 qidi1 commented May 11, 2022

Signed-off-by: qidi1 1083369179@qq.com

What problem does this PR solve?

Currently,Keyviz has keys and bytes dimensions. In some situations, it cannot find the hotspot that the CPU is high caused by QPS, the keys and bytes may be 0. For example:

create table t(id int);
insert into table t values (1)(2)....(1000);
// random read out bound,suppose there are many requests.
select * from t where id = 1000 + rand(0,1000)

Issue Number: #1209

What is changed and how does it work?

Return QPS data in PD.

Check List

Tests

  • Manual test

Related changes

Release note

None

Manual test

We ran a small cluster locally. On the cluster, test data was generated using the tiup bench tool. The results are shown in the figure below.
image
image

Signed-off-by: qidi1 <1083369179@qq.com>
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@breezewish
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This is very cool! Will you also propose the CPU dimension in this PR, or in later PRs?

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codecov-commenter commented May 12, 2022

Codecov Report

Merging #1252 (da923a4) into master (d3df070) will increase coverage by 0.34%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1252      +/-   ##
==========================================
+ Coverage   31.53%   31.87%   +0.34%     
==========================================
  Files         290      297       +7     
  Lines       17097    17118      +21     
  Branches      683      680       -3     
==========================================
+ Hits         5391     5456      +65     
+ Misses      11475    11431      -44     
  Partials      231      231              
Flag Coverage Δ
be_integration_test_latest 9.28% <0.00%> (-0.01%) ⬇️
be_integration_test_v4.0.1 9.26% <0.00%> (-0.06%) ⬇️
be_unit_test 24.11% <ø> (+0.04%) ⬆️
e2e_test 77.16% <ø> (+1.70%) ⬆️

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@qidi1: PR needs rebase.

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5 participants