bench: cluster patch #752

Kirill-Churkin · 2023-01-16T15:39:29Z

user@cartridge-cli % ./cartridge bench --leader=127.0.0.1:3301 --replica=127.0.0.1:3302
Tarantool 2.10.2 (Binary) b6820873-f007-4413-b2f0-69fe833c0e14 

Parameters:
        Leaders:
                127.0.0.1:3301
        Replicas:
                127.0.0.1:3302
        user: guest
        connections: 10
        simultaneous requests: 10
        duration: 10 seconds
        key size: 10 bytes
        data size: 20 bytes
        insert: 100 percentages
        select: 0 percentages
        update: 0 percentages

Data schema
| key                            | value
| ------------------------------ | ------------------------------
| random(10)                     | random(20)
Benchmark start
...
Benchmark stop.

Results:
        Success operations: 760386
        Failed  operations: 0
        Request count: 760474
        Time (seconds): 9.979464
        Requests per second: 76203

DifferentialOrange

Thank you for your contribution! Seems legit at most, I have left a few comments.

DifferentialOrange · 2023-02-07T07:33:13Z

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)


Please, rebase on master and resolve changelog conflict.

DifferentialOrange · 2023-02-07T07:43:08Z

CHANGELOG.md

+### Added
+
+- Tarantool benchmark tool update (cluster bench):
+  * option --leader has been added - sest array of url's for leaders.


Suggested change

* option --leader has been added - sest array of url's for leaders.

* option --leader has been added - set array of url's for leaders,

DifferentialOrange · 2023-02-07T07:43:19Z

CHANGELOG.md

+
+- Tarantool benchmark tool update (cluster bench):
+  * option --leader has been added - sest array of url's for leaders.
+  * option --replica has been added - sest array of url's for replicas.


Suggested change

* option --replica has been added - sest array of url's for replicas.

* option --replica has been added - set array of url's for replicas.

DifferentialOrange · 2023-02-07T07:55:31Z

cli/bench/cluster.go

+	"github.com/tarantool/cartridge-cli/cli/context"
+)
+
+// verifyLeaders check each replica have leader.


The method is verifyReplicas.

DifferentialOrange · 2023-02-07T08:05:03Z

CHANGELOG.md

+
+### Added
+
+- Tarantool benchmark tool update (cluster bench):


To be honest, I don't get a full understanding of what "cluster" is here.

It seems that one of the options for a cluster is a replicaset. No questions here.

But it's more complicated with a vshard cluster. Yeah, each storage in a vshard cluster has the same schema (if we're talking about the same vshard group), so you theoretically can send the same CRUD requests to each storage in a vshard cluster. But you never work with vshard storages directly, you use a router (especially since each record from a sharded space should have a bucket id, and it's computed on a router). So it doesn't make much sense to bench storages only, especially since stored procedures on a router may be complicated and the bottleneck of the vshard clusters is often the network requests between a router and a storage.

So the question is as follows. Is "cluster bench" actually a "replicaset bench"? What did you use it for?

DifferentialOrange · 2023-02-07T08:39:03Z

cli/bench/cluster.go

+	return nil
+}
+
+// createNodesConnectionsPools creates connections pool for every node in cluster.


Description is confusing. At first I have thought that we have not two, but N connection pool with a single node in each of them.

DifferentialOrange · 2023-02-07T08:56:19Z

CHANGELOG.md

@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)


I think we should have tests for the feature.

DifferentialOrange · 2023-02-07T08:57:42Z

cli/bench/types.go

+
+// RotaryNodesConnectionsPools describes round-cycled cluster nodes array,
+// where each represented by RotaryConnectionsPool.
+type RotaryNodesConnectionsPools struct {


I don't get what's the motivation behind such complicated hierarchy.

DifferentialOrange · 2023-02-07T09:00:43Z

cli/bench/types.go

@@ -16,15 +18,31 @@ type Results struct {
 	requestsPerSecond    int     // Cumber of requests per second - the main measured value.
 }

+// RotaryConnectionsPool describes round-cycled connection pool.


For the future, I think you may consider developing bench as tt extension. tt uses tarantool/go-tarantool as a connector, and go-tarantool has built-in support of connection pools. It is also worth to mention that you should be able to develop an extention within your own repo.

DifferentialOrange · 2023-02-07T09:46:05Z

cli/bench/cluster.go

+		benchData.waitGroup.Add(1)
+		go func() {
+			defer benchData.waitGroup.Done()
+			requestsSequence := RequestsSequence{


Now requests generation is the part of the bench run tracked by timer. I think it's better to build request data before starting the timer, if possible.

Mons · 2023-02-21T14:52:46Z

This should be better in tt, rather than in cartridge-cli

DifferentialOrange

Just a status clarification, since GitHub treats this as "need review"

sergos · 2024-01-26T08:02:04Z

@LeonidVas please consider opportunity to transfer/adapt the test to tt perf bench.

bench: cluster patch

aea0db9

Kirill-Churkin force-pushed the tarantool-benchmark branch from 6172ec4 to aea0db9 Compare January 16, 2023 15:46

LeonidVas self-requested a review January 16, 2023 15:55

LeonidVas requested a review from DifferentialOrange February 6, 2023 10:43

DifferentialOrange reviewed Feb 7, 2023

View reviewed changes

LeonidVas removed their request for review March 23, 2023 15:02

DifferentialOrange requested changes Apr 19, 2023

View reviewed changes

sergos assigned LeonidVas Jan 26, 2024

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bench: cluster patch #752

bench: cluster patch #752

Kirill-Churkin commented Jan 16, 2023 •

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sergos commented Jan 26, 2024

		@@ -5,6 +5,14 @@ All notable changes to this project will be documented in this file.
		The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)

	* option --leader has been added - sest array of url's for leaders.
	* option --leader has been added - set array of url's for leaders,

	* option --replica has been added - sest array of url's for replicas.
	* option --replica has been added - set array of url's for replicas.

bench: cluster patch #752

Are you sure you want to change the base?

bench: cluster patch #752

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sergos commented Jan 26, 2024

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