Object Storage Service (OSS) enforces bandwidth and queries per second (QPS) throttling at the user and bucket levels. When access requests exceed the limits, bandwidth throttling increases latency and QPS throttling drops some requests. For the specific limits, see Limits and performance metrics. To proactively monitor these events, create alert rules in CloudMonitor to receive notifications through text messages, emails, or DingTalk Robot when a threshold is reached.
OSS system event types
|
System event |
Event name |
Event level |
Trigger condition |
|
Bucket downstream bandwidth exceeds the reporting threshold |
BucketEgressBandwidth |
Notification (INFO) |
Triggered when the downstream bandwidth of a bucket exceeds the reporting threshold. |
|
Bucket downstream bandwidth exceeds the throttling threshold |
BucketEgressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the downstream bandwidth of a bucket exceeds the throttling threshold. Access latency increases. |
|
Bucket upstream bandwidth exceeds the reporting threshold |
BucketIngressBandwidth |
Notification (INFO) |
Triggered when the upstream bandwidth of a bucket exceeds the reporting threshold. |
|
Bucket upstream bandwidth exceeds the throttling threshold |
BucketIngressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the upstream bandwidth of a bucket exceeds the throttling threshold. Access latency increases. |
|
Bucket QPS exceeds the reporting threshold |
BucketQps |
Notification (INFO) |
Triggered when the QPS of a bucket exceeds the reporting threshold. |
|
Bucket QPS exceeds the throttling threshold |
BucketQpsThresholdExceeded |
Warning (WARN) |
Triggered when the QPS of a bucket exceeds the throttling threshold. Some requests are dropped. |
|
User downstream bandwidth exceeds the reporting threshold |
UserEgressBandwidth |
Notification (INFO) |
Triggered when the downstream bandwidth of a user exceeds the reporting threshold. |
|
User downstream bandwidth exceeds the throttling threshold |
UserEgressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the downstream bandwidth of a user exceeds the throttling threshold. Access latency increases. |
|
User upstream bandwidth exceeds the reporting threshold |
UserIngressBandwidth |
Notification (INFO) |
Triggered when the upstream bandwidth of a user exceeds the reporting threshold. |
|
User upstream bandwidth exceeds the throttling threshold |
UserIngressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the upstream bandwidth of a user exceeds the throttling threshold. Access latency increases. |
|
User QPS exceeds the reporting threshold |
UserQps |
Notification (INFO) |
Triggered when the QPS of a user exceeds the reporting threshold. |
|
User QPS exceeds the throttling threshold |
UserQpsThresholdExceeded |
Warning (WARN) |
Triggered when the QPS of a user exceeds the throttling threshold. Some requests are dropped. |
|
Bucket mirroring-based back-to-origin bandwidth exceeds the throttling threshold |
BucketMirrorIngressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the mirroring-based back-to-origin bandwidth of a bucket exceeds the throttling threshold. |
|
Bucket mirroring-based back-to-origin QPS exceeds the throttling threshold |
BucketMirrorQpsThresholdExceeded |
Warning (WARN) |
Triggered when the mirroring-based back-to-origin QPS of a bucket exceeds the throttling threshold. |
|
User mirroring-based back-to-origin bandwidth exceeds the throttling threshold |
UserMirrorIngressBandwidthThresholdExceeded |
Warning (WARN) |
Triggered when the mirroring-based back-to-origin bandwidth of a user exceeds the throttling threshold. |
|
User mirroring-based back-to-origin QPS exceeds the throttling threshold |
UserMirrorQpsThresholdExceeded |
Warning (WARN) |
Triggered when the mirroring-based back-to-origin QPS of a user exceeds the throttling threshold. |
|
Number of CPU cores for bucket image processing exceeds the reporting threshold |
BucketImageCpu |
Notification (INFO) |
Triggered when the CPU cores used for image processing in a bucket exceed the reporting threshold. |
|
Number of CPU cores for bucket image processing exceeds the throttling threshold |
BucketImageCpuThresholdExceeded |
Warning (WARN) |
Triggered when the CPU cores used for image processing in a bucket exceed the throttling threshold. |
|
Number of CPU cores for user image processing exceeds the reporting threshold |
UserImageCpu |
Notification (INFO) |
Triggered when the CPU cores used for image processing by a user exceed the reporting threshold. |
|
Number of CPU cores for user image processing exceeds the throttling threshold |
UserImageCpuThresholdExceeded |
Warning (WARN) |
Triggered when the CPU cores used for image processing by a user exceed the throttling threshold. |
Bandwidth events
Bucket downstream bandwidth exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:ap-southeast-1:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketEgressBandwidth",
"content": {
"TargetRate": "322***720",
"QoSType": "Egr***dth",
"TrafficRate": "322***760",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
322347720 |
|
QoSType |
The type of throttling that is triggered. EgressBandwidth indicates downstream bandwidth traffic. |
EgressBandwidth |
|
TrafficRate |
The current traffic rate. Unit: bytes/s. |
322347720 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Bucket downstream bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:us-east-1:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketEgressBandwidthThresholdExceeded",
"content": {
"TargetRate": "107***240",
"QoSType": "Egr***dth",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
10737418240 |
|
QoSType |
The type of throttling that is triggered. EgressBandwidth indicates downstream bandwidth traffic. |
EgressBandwidth |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Bucket upstream bandwidth exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:ap-southeast-1:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketIngressBandwidth",
"content": {
"TargetRate": "697***560",
"QoSType": "Ing***dth",
"TrafficRate": "692***888",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
697423560 |
|
QoSType |
The type of throttling that is triggered. IngressBandwidth indicates upstream bandwidth traffic. |
IngressBandwidth |
|
TrafficRate |
The current traffic rate. Unit: bytes/s. |
697423888 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Bucket upstream bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-zhangjiakou:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketIngressBandwidthThresholdExceeded",
"content": {
"TargetRate": "107***240",
"QoSType": "Ing***dth",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
10737418240 |
|
QoSType |
The type of throttling that is triggered. IngressBandwidth indicates upstream bandwidth traffic. |
IngressBandwidth |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Bucket QPS exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-wulanchabu:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketQps",
"content": {
"TargetRate": "20***",
"QoSType": "***",
"TrafficRate": "16***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
Throttling threshold (bytes/second) |
20742560 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
TrafficRate |
The current rate in bytes per second. |
16742560 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Bucket QPS exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-hangzhou:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketQpsThresholdExceeded",
"content": {
"TargetRate": "***",
"QoSType": "***",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold is specified in bytes per second. |
10737418240 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User downstream bandwidth exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-shanghai:137***********44:user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserEgressBandwidth",
"content": {
"TargetRate": "322***200",
"QoSType": "Egr***dth",
"TrafficRate": "258***032",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
32242200 |
|
QoSType |
The type of throttling that is triggered. EgressBandwidth indicates downstream bandwidth traffic. |
EgressBandwidth |
|
TrafficRate |
The current traffic rate. Unit: bytes/s. |
258167032 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User downstream bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-hangzhou:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserEgressBandwidthThresholdExceeded",
"content": {
"TargetRate": "161***360",
"QoSType": "Egr***dth",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
16137418360 |
|
QoSType |
The type of throttling that is triggered. EgressBandwidth indicates downstream bandwidth traffic. |
EgressBandwidth |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User upstream bandwidth exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-shanghai:137***********44:user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserIngressBandwidth",
"content": {
"TargetRate": "332***440",
"QoSType": "Ing***dth",
"TrafficRate": "332***008",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
322482440 |
|
QoSType |
The type of throttling that is triggered. IngressBandwidth indicates upstream bandwidth traffic. |
IngressBandwidth |
|
TrafficRate |
The current traffic rate. Unit: bytes/s. |
332716008 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User upstream bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-hongkong:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserIngressBandwidthThresholdExceeded",
"content": {
"TargetRate": "644***440",
"QoSType": "Ing***dth",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
644107440 |
|
QoSType |
The type of throttling that is triggered. IngressBandwidth indicates upstream bandwidth traffic. |
IngressBandwidth |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User QPS exceeds the reporting threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-beijing:137***********44:user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserQps",
"content": {
"TargetRate": "40***",
"QoSType": "***",
"TrafficRate": "32***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: queries/s. |
40242200 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
TrafficRate |
The current rate is measured in bytes per second. |
328167032 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
User QPS exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-shanghai:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserQpsThresholdExceeded",
"content": {
"TargetRate": "10***",
"QoSType": "***",
"AvgSeverity": "***",
"TrafficSource": "ne***ll"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold is specified in bytes per second. |
104107440 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
net_all |
Mirroring-based back-to-origin events
Bucket mirroring-based back-to-origin bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "1286411707916676/lzd-live-my-product",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketMirrorIngressBandwidthThresholdExceeded",
"content": "QoSType=Mirror&TrafficRate=&TrafficSource=extranet",
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TrafficRate |
The throttling threshold. Unit: bytes/s. |
104107440 |
|
QoSType |
The type of throttling that is triggered. Mirror indicates mirroring-based back-to-origin. |
Mirror |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
extranet |
Bucket mirroring-based back-to-origin QPS exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "1286411707916676/lzd-live-my-product",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketMirrorQpsThresholdExceeded",
"content": "QoSType=Mirror&TrafficRate=&TrafficSource=extranet",
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TrafficRate |
The throttling threshold. Unit: queries/s. |
104107440 |
|
QoSType |
The type of throttling that is triggered. Mirror indicates mirroring-based back-to-origin. |
Mirror |
|
TrafficSource |
The source of the traffic that triggers throttling. Valid values:
|
extranet |
User mirroring-based back-to-origin bandwidth exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:ap-southeast-1:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserMirrorIngressBandwidthThresholdExceeded",
"content": {
"TargetRate": "10***24",
"QoSType": "Ing***dth",
"AvgSeverity": "***",
"TrafficSource": "mi***"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: bytes/s. |
104107440 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. |
mirror |
User mirroring-based back-to-origin QPS exceeds the throttling threshold
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:ap-southeast-5:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserMirrorQpsThresholdExceeded",
"content": {
"TargetRate": "10***",
"QoSType": "***",
"AvgSeverity": "***",
"TrafficSource": "mi***"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The throttling threshold. Unit: queries/s. |
104107440 |
|
QoSType |
The type of throttling that is triggered. Qps indicates the number of requests per second. |
Qps |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. |
mirror |
Image processing events
Number of CPU cores for bucket image processing exceeds the reporting threshold
Triggered when the CPU cores used for image processing in a bucket exceed the reporting threshold. Use this event to monitor image processing resource usage.
{
"product": "OSS",
"resourceId": "acs:oss:cn-hangzhou:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketImageCpu",
"content": {
"TargetRate": "500",
"QoSType": "Cpu",
"TrafficRate": "404",
"TrafficSource": "image"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The CPU core throttling threshold. |
500 |
|
QoSType |
The type of throttling that is triggered. Cpu indicates the limit on the number of CPU cores. |
Cpu |
|
TrafficRate |
The current number of CPU cores in use. |
404 |
|
TrafficSource |
The source of the traffic that triggers throttling. image indicates image processing. |
image |
Number of CPU cores for bucket image processing exceeds the throttling threshold
Triggered when the CPU cores used for image processing in a bucket exceed the throttling threshold. Image processing request latency increases, and you may need to reduce the concurrency of image processing requests.
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:us-west-1:137***********44:bucket/<resource-id>,user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "BucketImageCpuThresholdExceeded",
"content": {
"TargetRate": "***",
"QoSType": "***",
"AvgSeverity": "***",
"TrafficSource": "im***"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The CPU core throttling threshold. |
500 |
|
QoSType |
The type of throttling that is triggered. Cpu indicates the limit on the number of CPU cores. |
Cpu |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. image indicates image processing. |
image |
Number of CPU cores for user image processing exceeds the reporting threshold
Triggered when the CPU cores used for image processing by a user exceed the reporting threshold. Use this event to monitor image processing resource usage at the user level.
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:cn-shanghai:137***********44:user/<resource-id>",
"level": "INFO",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserImageCpu",
"content": {
"TargetRate": "1000",
"QoSType": "Cpu",
"TrafficRate": "800",
"TrafficSource": "image"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The CPU core throttling threshold. |
1000 |
|
QoSType |
The type of throttling that is triggered. Cpu indicates the limit on the number of CPU cores. |
Cpu |
|
TrafficRate |
The current number of CPU cores in use. |
800 |
|
TrafficSource |
The source of the traffic that triggers throttling. image indicates image processing. |
image |
Number of CPU cores for user image processing exceeds the throttling threshold
Triggered when the total CPU cores used for image processing across all buckets of a user exceed the throttling threshold. Image processing request latency increases, and you may need to reduce the concurrency of image processing requests.
The following shows the JSON format of the event notification:
{
"product": "OSS",
"resourceId": "acs:oss:ap-southeast-3:137***********44:user/<resource-id>",
"level": "WARN",
"instanceName": "instanceName",
"regionId": "cn-hangzhou",
"name": "UserImageCpuThresholdExceeded",
"content": {
"TargetRate": "***",
"QoSType": "***",
"AvgSeverity": "***",
"TrafficSource": "im***"
},
"status": "normal"
}The following table describes the fields in the content object:
|
Field |
Description |
Example |
|
TargetRate |
The CPU core throttling threshold. |
500 |
|
QoSType |
The type of throttling that is triggered. Cpu indicates the limit on the number of CPU cores. |
Cpu |
|
AvgSeverity |
The degree of throttling. A higher value indicates stronger throttling and higher latency. The value ranges from 0 to 100. |
10 |
|
TrafficSource |
The source of the traffic that triggers throttling. image indicates image processing. |
image |