AWS Storage Gateway - Page 215

AWS Storage Gateway User Guide
Measuring Performance Between Your Gateway and AWS
Item of Interest How to Measure
Throughput Use the ReadBytes and WriteBytes metrics with the Sum CloudWatch
statistic. For example, the Sum value of the ReadBytes metric over a sample
period of 5 minutes divided by 300 seconds gives you the throughput as a rate
in bytes per second.
Latency Use the ReadTime and WriteTime metrics with the Average CloudWatch
statistic. For example, the Average value of the ReadTime metric gives you
the latency per operation over the sample period of time.
IOPS Use the ReadBytes and WriteBytes metrics with the Samples CloudWatch
statistic. For example, the Samples value of the ReadBytes metric over a
sample period of 5 minutes divided by 300 seconds gives you IOPS.
Throughput to AWS Use the CloudBytesDownloaded and CloudBytesUploaded metrics
with the Sum CloudWatch statistic. For example, the Sum value of the
CloudBytesDownloaded metric over a sample period of 5 minutes divided
by 300 seconds gives you the throughput from AWS to the gateway as bytes
per second.
Latency of data to
AWS
Use the CloudDownloadLatency metric with the Average statistic. For
example, the Average statistic of the CloudDownloadLatency metric gives
you the latency per operation.
To measure the upload data throughput from a gateway to AWS
1. Open the CloudWatch console at https://console.amazonaws.cn/cloudwatch/.
2. Choose Metrics, then choose the All metrics tab and then choose Storage Gateway.
3. Choose the Gateway metrics dimension, and find the volume that you want to work with.
4. Choose the CloudBytesUploaded metric.
5. For Time Range, choose a value.
6. Choose the Sum statistic.
7. For Period, choose a value of 5 minutes or greater.
8. In the resulting time-ordered set of data points, divide each data point by the period (in seconds) to
get the throughput at that sample period.
The following image shows the CloudBytesUploaded metric for a gateway volume with the Sum
statistic. In the image, the cursor over a data point displays information about the data point, including
its value and bytes uploaded. Divide this value by the Period value (5 minutes) to get the throughput at
that sample point. For the point highlighted, the throughput from the gateway to AWS is 555,544,576
bytes divided by 300 seconds, which is 1.7 megabytes per second.
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