Commit Graph

52 Commits

Author SHA1 Message Date
rwatson
fc39b92b37 Properly combine per-CPU UMA cache allocation and free counts with the
global counters maintained in the zone.

MFC after:	1 week
2005-07-14 20:01:04 +00:00
rwatson
2dbb0a62ae Add libmemstat(3), a library for use by debugging and monitoring
applications in tracking kernel memory statistics.  It provides an
abstracted interface to uma(9) and malloc(9) statistics, wrapped
around the recently added binary stream sysctls for the allocators.

Using this interface, it is easy to build monitoring tools, query
specific memory types for usage information, etc.  Facilities are
provided for binding caller-provided data to memory types,
incremental updates of memory types, and queries that span multiple
allocators.

Support for additional allocators is (relatively) easy to add.

The API for libmemstat(3) will probably change some over time as
consumers are written, and requirements evolve.  It is written to
avoid encoding ABIs for data structure layout into consuming
applications for this reason.

MFC after:	1 week
2005-07-14 17:40:02 +00:00