STORAGE SYSTEM WITH TRACE-BASED MANAGEMENT

摘要

Embodiments of the invention relate to storage systems, and for recording event records into a log. Different statistics may be tallied from the log, with the different statistics generating different statistical measurements. The aspect of processing of I/O and preparation of statistical measurements are separated, thereby enabling data structures and algorithms which would not be considered feasible for use as part of I/O processing, because they may compromise the performance or other essential characteristic of I/O processing, to be employed.

主权项

1. A method comprising:
processing an I/O transaction and recording transaction metadata into a log, wherein the log includes a subset of two or more transaction operations; operating a summarizer upon the log to generate a statistical measurement; and using the statistical measurement, selecting one or more parameter values for supporting a decision about a parameter setting.