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    Performance Testing:Specify the number of IP addresses from which the testing traffic originates

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    Performance Testing:Specify the number of IP addresses from which the testing traffic originates

    Last Updated:Nov 01, 2024

    The source IP address refers to the IP address from which the performance testing traffic originates. If a significant number of requests are sent from a single IP address at a high frequency, the protection mechanism may recognize this behavior as abnormal and take steps to block the traffic. You can increase the number of source IP addresses within the specified range based on the number of virtual users or RPS. By distributing the load across a greater number of IP addresses, you can minimize the risk of traffic blocking.

    Procedure

    1. Log on to the PTS console, choose Performance Test > Create Scenario, and then click PTS.

    2. Set the number of IP addresses from which the testing traffic originates

      Important

      • The increase in the number of IP addresses leads to increased charges. Virtual Users per Minute (VUM) are calculated by multiplying the total number of IP addresses by 500. You can view the estimated VUM consumption based on the number of IP addresses in the figure on the right.

      • If the maximum number of IP addresses is insufficient for your business needs, you can apply for an increase.

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    Causes of performance testing exceptions

    • SLB limits

      Check whether the Server Load Balancer (SLB) instance reaches or exceeds the specifications and bandwidth limits based on its billing method. If the SLB instance is at the outermost layer of the service architecture and the testing API uses HTTPS or has session persistence enabled, a 503 error may occur during stress testing. If no traffic or log appears at the backend, the 503 error may be caused by the limit of the SLB instance on the number of requests from a single IP address. To resolve the issue, see 503 (Service Unavailable).

    • Anti-DDoS or WAF enabled

      If Anti-DDoS or WAF is enabled, traffic interception may occur. Take one of the following measures based on your business requirements:

      Temporarily disable Anti-DDoS or WAF during performance testing. For more information, see FAQ Overview.

      Add whitelists in the PTS console to prevent testing from being blocked. For more information, see What do I do if the stress testing traffic cannot access my web application due to security policies?

    • Content Delivery Network (CDN) or Dynamic Content Delivery Network (DCDN) used

      We recommend that you submit a ticket when your business is reaching or exceeding the existing peak.

    What can I do if the load of the load generator cluster is high?

    If the load generator cluster is under heavy loads and its resources such as the bandwidth, CPU, or memory are insufficient, you can increase the number of testing traffic source IP addresses.