<t>A DTU is a unit of measure for the performance of a service tier and is a summary of several database characteristics. Each service tier has a certain number of DTUs assigned to it as an easy way to compare the performance level of one tier versus another.<br/>
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Database Throughput Unit (DTU): DTUs provide a way to<br/>
describe the relative capacity of a performance level of Basic,<br/>
Standard, and Premium databases. DTUs are based on a blended measure<br/>
of CPU, memory, reads, and writes. As DTUs increase, the power offered<br/>
by the performance level increases. For example, a performance level<br/>
with 5 DTUs has five times more power than a performance level with 1<br/>
DTU. A maximum DTU quota applies to each server.<br/>
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The DTU Quota applies to the server, not the individual databases and each server has a maximum of 1600 DTUs. The DTU% is the percentage of units your particular database is using and it seems that this number can go over 100% of the DTU rating of the service tier (I assume to the limit of the server). This percentage number is designed to help you choose the appropriate service tier.<br/>
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From down toward the bottom of this announcement:<br/>
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For example, if your DTU consumption shows a value of 80%, it<br/>
indicates it is consuming DTU at the rate of 80% of the limit an S2<br/>
database would have. If you see values greater than 100% in this view<br/>
it means that you need a performance tier larger than S2.<br/>
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As an example, let’s say you see a percentage value of 300%. This<br/>
tells you that you are using three times more resources than would be<br/>
available in an S2. To determine a reasonable starting size, compare<br/>
the DTUs available in an S2 (50 DTUs) with the next higher sizes (P1 =<br/>
100 DTUs, or 200% of S2, P2 = 200 DTUs or 400% o<br/>
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(Réponse tronquée)</t>
