Why Is the Download Speed of My ECS Slow?

Troubleshooting Process

If the download speed of an ECS is slow, check the following:

• Bandwidth limit exceeded: Your used bandwidth exceeds its limit and the limiting policy of the bandwidth takes effect, causing packet loss and slowing down the access. You can check the bandwidth usage or increase the bandwidth.

  If your service traffic continues to be high, you can increase the bandwidth by referring to Modifying a Shared Bandwidth.

• The memory usage of the ECS is higher than 80%.

  For details, see Why Is My Linux ECS Running Slowly? or Why Is My Windows ECS Running Slowly?

• Unstable carrier lines: The network between the local server and the cloud is unstable. Contact the carrier to check the network status.
• Unstable cross-border lines: Latency, jitter, or packet loss occasionally occurs due to cross-border line congestion, switchover, or limits on bandwidth going out of China.

  For details, see Why Accessing a Website Outside the Chinese Mainland Is Slow on an ECS? and Why Is There Network Jitter or Packet Loss During Cross-Border Communications?

  You can also use a server outside China to upload files to your mailbox or web disk, and then access your mailbox or web disk in China to download the files to your local server.

Submitting a Service Ticket

If the download speed is still slow after the preceding steps are performed, submit a service ticket.