The minimum collection interval for Performance Sentry and NTSMF is 1 second. However, in most cases collecting at a 1 second interval may not be practical.
For customers who do require less than 60 second sample intervals we recommend that they pare their data collection sets down to the absolute minimum number of counters for collection. These counters usually center around a specific subsystem (like disk) or processes for a specific application.
Some customers have designed these collection sets to run 24×7, however, most customers will set this up for only a short period of time while they are doing a performance study.
Note that for the Performance Sentry MS SQL Server-based PDB, one-minute collection intervals are preferred.
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