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

Note For information about OSS throttling events, see Use CloudMonitor to monitor OSS throttling information in real time.
Event Description Status Level Cause
BucketEgressBandwidth The downstream bandwidth that is used by a bucket exceeds the report threshold. Normal Info This event is triggered if the total downstream bandwidth that is used by the current bucket exceeds the report threshold.
BucketEgressBandwidthThresholdExceeded The downstream bandwidth that is used by a bucket exceeds the throttling threshold. Normal Warn This event is triggered if the total downstream bandwidth that is used by the current bucket exceeds the throttling threshold.
BucketIngressBandwidth The upstream bandwidth that is used by a bucket exceeds the report threshold. Normal Info This event is triggered if the total upstream bandwidth that is used by the current bucket exceeds the report threshold.
BucketIngressBandwidthThresholdExceeded The upstream bandwidth that is used by a bucket exceeds the throttling threshold. Normal Warn This event is triggered if the total upstream bandwidth that is used by the current bucket exceeds the throttling threshold.
BucketImageCpuThresholdExceeded The number of CPU cores that are used by a bucket to process Image Processing (IMG) requests exceeds the throttling threshold. Normal Warn This event is triggered if the total number of CPU cores that are used by the current bucket to process IMG requests exceeds the throttling threshold.
BucketMirrorIngressBandwidthThresholdExceeded The bandwidth that is used by a bucket to send mirroring-based back-to-origin requests exceeds the throttling threshold. Normal Warn This event is triggered if the bandwidth that is used by the current bucket to send mirroring-based back-to-origin requests exceeds the throttling threshold.
BucketMirrorQpsThresholdExceeded The number of requests that are sent by a bucket per second to implement mirroring-based back-to-origin exceeds the throttling threshold. Normal Warn This event is triggered if the total number of requests that are sent by the current bucket per second to implement mirroring-based back-to-origin exceeds the throttling threshold.
BucketQpsThresholdExceeded The number of requests that are received by a bucket per second exceeds the throttling threshold. Normal Warn This event is triggered if the total number of requests that are received by the current bucket per second exceeds the throttling threshold.
UserEgressBandwidth The downstream bandwidth of a user exceeds the report threshold. Normal Info This event is triggered if the total downstream bandwidth that is used by all buckets of the current user exceeds the report threshold.
UserEgressBandwidthThresholdExceeded The downstream bandwidth of a user exceeds the throttling threshold. Normal Warn This event is triggered if the total downstream bandwidth that is used by all buckets of the current user exceeds the throttling threshold.
UserIngressBandwidth The upstream bandwidth of a user exceeds the report threshold. Normal Info This event is triggered if the total upstream bandwidth that is used by all buckets of the current user exceeds the report threshold.
UserIngressBandwidthThresholdExceeded The upstream bandwidth of a user exceeds the throttling threshold. Normal Warn This event is triggered if the total upstream bandwidth that is used by all buckets of the current user exceeds the throttling threshold.
UserImageCpuThresholdExceeded The number of CPU cores that are used to process IMG requests for a user exceeds the throttling threshold. Normal Warn This event is triggered if the number of CPU cores that are used by all buckets of the current user to process IMG requests exceeds the throttling threshold.
UserMirrorIngressBandwidthThresholdExceeded The traffic that is consumed to send mirroring-based back-to-origin requests for a user exceeds the throttling threshold. Normal Warn This event is triggered if the total traffic that is consumed by all buckets of the current user to send mirroring-based back-to-origin requests exceeds the throttling threshold.
UserMirrorQpsThresholdExceeded The number of requests that are sent per second to implement mirroring-based back-to-origin for a user exceeds the throttling threshold. Normal Warn This event is triggered if the total number of requests that are sent by all buckets of the current user per second to implement mirroring-based back-to-origin exceeds the throttling threshold.
UserQpsThresholdExceeded The number of requests that are received per second for a user exceeds the throttling threshold. Normal Warn The total number of requests that are received by all buckets of the current user per second exceeds the throttling threshold.