My metabase interface suddenly slows significantly down for some user

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1

We have been using metabase for more than 2 years and it has worked fine but recently, the metabase slows down significantly for a set of users during peak hours. I have looked at all sort of metrics like CPU Utilization, DB calls etc and none of them are too high, so I am unable to diagnose and fix this issue. We have hosted the metabase instance on AWS Elastic Beanstalk as per the following instructions - Running Metabase on AWS Elastic Beanstalk . The diagnostic info is as follows:

{
  "browser-info": {
    "language": "en-GB",
    "platform": "MacIntel",
    "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36",
    "vendor": "Google Inc."
  },
  "system-info": {
    "file.encoding": "UTF-8",
    "java.runtime.name": "OpenJDK Runtime Environment",
    "java.runtime.version": "11.0.18+10",
    "java.vendor": "Eclipse Adoptium",
    "java.vendor.url": "https://adoptium.net/",
    "java.version": "11.0.18",
    "java.vm.name": "OpenJDK 64-Bit Server VM",
    "java.vm.version": "11.0.18+10",
    "os.name": "Linux",
    "os.version": "4.14.238-182.422.amzn2.x86_64",
    "user.language": "en",
    "user.timezone": "GMT"
  },
  "metabase-info": {
    "databases": [
      "h2",
      "postgres"
    ],
    "hosting-env": "unknown",
    "application-database": "postgres",
    "application-database-details": {
      "database": {
        "name": "PostgreSQL",
        "version": "13.10"
      },
      "jdbc-driver": {
        "name": "PostgreSQL JDBC Driver",
        "version": "42.5.0"
      }
    },
    "run-mode": "prod",
    "version": {
      "date": "2023-02-19",
      "tag": "v0.45.3",
      "branch": "release-x.45.x",
      "hash": "070f57b"
    },
    "settings": {
      "report-timezone": null
    }
  }
}

It will great if someone can help here.

2

Please tell us the sizing of the server and also the sizing of the app db

My guess is that the app db is struggling, but just a blind guess

3

For server, we are using a AWS EC2 - m5.4xlarge (16 vCPU, 64 GB RAM). I have tracked CPU Utilization but it has not gone above 6% (mostly it stays below 2%) in the last 1 month.
For DB, we are using a AWS Postgres RDS - db.t3.micro (2 vCPU, 1 GB RAM). I have tracked CPU Utilization (less than 15%) and # connections.
Though, I have observed that certain queries take longer than expected. PFA, the screenshot of top queries.

Screenshot 2023-07-20 at 11.59.11 AM
Screenshot 2023-07-20 at 11.59.11 AM2628×834 237 KB

4

Please reduce the size of your Metabase server (it’s an overkill, even our biggest customers don’t need that beast unless you’re having a massive amount of traffic (e.g 5000/10000 RPS)

Also please increase the size of your application database. At least 2 cores and 8gb of ram with a gp3 disk

5

Thanks, this solution worked.