This topic describes how to test the connectivity of an ApsaraDB for MongoDB standalone instance. An Elastic Compute Service (ECS) instance is used to connect to the standalone instance.
Prerequisites
An ECS instance and an ApsaraDB for MongoDB standalone instance are created. For more information, see Create a standalone instance and Create and manage an ECS instance by using the ECS console (express version).
The following table describes the settings of the instances.
Item
ECS instance
ApsaraDB for MongoDB standalone instance
Description
Region and zone
Hangzhou Zone H
Hangzhou Zone H
The two instances reside within the same region and zone.
Network type
Virtual Private Cloud (VPC)
VPC
The two instances reside within the same VPC.
CPU and memory
16 cores, 128 GB memory
Specifications: 8 cores, 32 GB memory
Disk space: 200 GB
N/A
Instance family
ecs.hfr6
General-purpose
Instance type
ecs.hfr6.4xlarge
dds.sn4.2xlarge.1
Storage type
Enhanced SSD (ESSD)
ESSD
Image or engine version
Alibaba Cloud Linux 3.2104 LTS 64-bit
MongoDB 4.0
Add the public and private IP addresses of the ECS instance to a whitelist of the ApsaraDB for MongoDB standalone instance. For more information, see Configure a whitelist for an ApsaraDB for MongoDB instance.
Install the open source YCSB tool on the ECS instance. For more information, visit YCSB.
Test procedure
Log on to the ECS console and connect to the ECS instance. For more information, see Create and manage an ECS instance by using the ECS console (express version).
Run the following command to load data to the ApsaraDB for MongoDB standalone instance:
./bin/ycsb load mongodb -s -p workload=site.ycsb.workloads.CoreWorkload -p recordcount=30000000 -p mongodb.url="mongodb://root:123456Aa@dds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717/admin" -threads 8
Replace the following values with actual values:
123456Aa
: the password of the root account of the ApsaraDB for MongoDB standalone instancedds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717
: the endpoint of the primary node in the ApsaraDB for MongoDB standalone instanceNoteYou can obtain the endpoint in the Internal Connections - VPC section of the Database Connections page in the ApsaraDB for MongoDB console.
Run the commands described in the following table to start multiple YCSB processes for read and write testing.
Scenario
Test command
Description
8 concurrent operations
./bin/ycsb run mongodb -s -p workload=site.ycsb.workloads.CoreWorkload -p recordcount=30000000 -p operationcount=50000000 -p readproportion=0.5 -p updateproportion=0.5 -p requestdistribution=zipfian -p mongodb.url="mongodb://root:123456Aa@dds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717/admin" -threads 8
Replace the following values with actual values:
123456Aa
: the password of the root account of the ApsaraDB for MongoDB standalone instancedds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717
: the endpoint of the primary node in the ApsaraDB for MongoDB standalone instanceNoteYou can obtain the endpoint in the Internal Connections - VPC section of the Database Connections page in the ApsaraDB for MongoDB console.
2,000 concurrent operations
./bin/ycsb run mongodb -s -p workload=site.ycsb.workloads.CoreWorkload -p recordcount=30000000 -p operationcount=50000000 -p readproportion=0.5 -p updateproportion=0.5 -p requestdistribution=zipfian -p mongodb.url="mongodb://root:123456Aa@dds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717/admin" -threads 2000
10,000 concurrent operations
./bin/ycsb run mongodb -s -p workload=site.ycsb.workloads.CoreWorkload -p recordcount=30000000 -p operationcount=50000000 -p readproportion=0.5 -p updateproportion=0.5 -p requestdistribution=zipfian -p mongodb.url="mongodb://root:123456Aa@dds-bp13e84d111a1a****.mongodb.rds.aliyuncs.com:3717/admin" -threads 10000
View the number of connections to the ApsaraDB for MongoDB standalone instance.
Log on to the ApsaraDB for MongoDB console.
In the left-side navigation pane, click Replica Set Instances.
In the upper-left corner of the page, select the resource group and region to which the desired instance belongs.
Click the ID of the instance or click Manage in the Actions column.
In the left-side navigation pane of the instance details page, click Monitoring Data.
On the Basic Monitoring tab, select the latest hour to view the CPU Utilization, QPS, and Connections charts.
Test results
An ApsaraDB for MongoDB standalone instance that has 8 CPU cores and 32 GB of memory can handle 10,000 connections.
Instance connections consume CPU resources. We recommend that you keep the number of connections within a proper range.
When the number of concurrent operations reaches the threshold, the increase in the number of concurrent operations no longer contributes to higher CPU utilization and QPS. You must set the number of concurrent operations to a proper value based on your workloads.