This topic describes the system events for Object Storage Service (OSS).

Event Description Status Level Remarks
BucketEgressBandwidth The downstream bandwidth that is used by buckets exceeds the report threshold. Normal Info This event is triggered if the total downstream bandwidth that is used by all the buckets owned by an Alibaba Cloud account exceeds the report threshold of 128 Mbit/s.
BucketEgressBandwidthThresholdExceeded The downstream bandwidth that is used by buckets exceeds the throttling threshold. Normal Warn Buckets are subject to regional throttling.
Throttling is triggered if the total downstream bandwidth that is used by all the buckets in a region exceeds the throttling threshold.
  • The default threshold is 10 Gbit/s in Mainland China regions.
  • The default threshold is 5 Gbit/s in regions outside Mainland China, including the China (Hong Kong) region.

By default, the bandwidth of a single bucket is not throttled.

BucketIngressBandwidth The upstream bandwidth that is used by buckets exceeds the report threshold. Normal Info This event is triggered if the total upstream bandwidth that is used by all the buckets owned by an Alibaba Cloud account exceeds the report threshold of 128 Mbit/s.
BucketIngressBandwidthThresholdExceeded The upstream bandwidth that is used by buckets exceeds the throttling threshold. Normal Warn Buckets are subject to regional throttling.
Throttling is triggered if the total downstream bandwidth that is used by all the buckets in a region exceeds the throttling threshold.
  • The default threshold is 10 Gbit/s in Mainland China regions.
  • The default threshold is 5 Gbit/s in regions outside Mainland China, including the China (Hong Kong) region.

By default, the bandwidth of a single bucket is not throttled.

UserEgressBandwidth The downstream bandwidth of a user has exceeded the report threshold. Normal Info This event is triggered if the total downstream bandwidth that is used by all the buckets owned by an Alibaba Cloud account exceeds the report threshold of 128 Mbit/s.
UserEgressBandwidthThresholdExceeded The downstream bandwidth of a user has exceeded the throttling threshold. Normal Warn Throttling is triggered if the total downstream bandwidth that is used by all the buckets in a region exceeds the throttling threshold.
  • The default threshold is 10 Gbit/s in Mainland China regions.
  • The default threshold is 5 Gbit/s in regions outside Mainland China, including the China (Hong Kong) region.

By default, the bandwidth of a single bucket is not throttled.

UserIngressBandwidth The upstream bandwidth of a user has exceeded the report threshold. Normal Info This event is triggered if the total upstream bandwidth that is used by all the buckets owned by an Alibaba Cloud account exceeds the report threshold of 128 Mbit/s.
UserIngressBandwidthThresholdExceeded The upstream bandwidth of a user has exceeded the throttling threshold. Normal Warn Throttling is triggered if the total upstream bandwidth that is used by all the buckets in a region exceeds the throttling threshold.
  • The default threshold is 10 Gbit/s in Mainland China regions.
  • The default threshold is 5 Gbit/s in regions outside Mainland China, including the China (Hong Kong) region.

By default, the bandwidth of a single bucket is not throttled.