Determining changes in a performance of a server

A system comprising:

• one or more processors coupled to memory, the one or more processors configured to:
• receive a processing load of a server and a request rate indicative of a number of requests to the server;
• apply a filter to the processing load and to the request rate to generate a first signal indicative for the processing load for a range of time and a second signal for the request rate for the range of time;
• determine, based on the first signal and the second signal, a value indicative of a correlation between the processing load of the server and the request rate for the range of time;
• determine that the value is less than a range of a threshold for the server, the threshold indicative of one or more previous values determined for the server for the range of time indicative of previous correlations between previous processing loads and previous request rates;
• and
• generate an alert indicating a change in a performance of the server responsive to determining the value indicative of the correlation between the processing load and the request rate is less than the threshold for the server.

A non-transitory computer-readable medium, comprising instructions that, when executed by a processor of a device, cause the processor to:

• receive a processing load of a server and a request rate indicative of a number of requests to the server;
• apply a filter to the processing load and to the request rate to generate a first signal for the processing load for a range of time and a second signal for the request rate for the range of time;
• determine, based on the first signal and the second signal, a value indicative of a correlation between the processing load of the server and the request rate for the range of time;
• determine that the value is less than a range of a threshold for the server, the threshold indicative of one or more previous values determined for the server for the range of time indicative of previous correlations between previous processing loads and previous request rates;
• and
• generate an alert indicating a change in a performance of the server responsive to determining the value indicative of the correlation between the processing load and the request rate is less than the threshold for the server.