AWS Storage Gateway User Guide
Measuring Performance Between
Your Tape Gateway and AWS
statistic for input/output operations per second (IOPS). For more information, see
in the
Amazon CloudWatch User Guide
The following table summarizes the metrics and the corresponding statistic you can use to measure the
throughput, latency, and IOPS between your tape gateway and AWS.
Item of Interest
How to Measure
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.
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 tape gateway as a
rate in 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 tape gateway to AWS
1. Open the CloudWatch console at
https://console.amazonaws.cn/cloudwatch/
2. Choose the
Metrics
tab.
3. Choose the
StorageGateway: Gateway Metrics
dimension, and find the tape gateway 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 tape with the
Sum
statistic.
In the image, placing the cursor over a data point displays information about the data point, including
its value and the number of 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 tape gateway to
AWS is 555,544,576 bytes divided by 300 seconds, which is 1.7 megabytes per second.
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