Technical Reference: Kernel and Subsystems, Volume 1

mbstat Structure for mbuf Kernel Services

Contains mbuf usage statistics.

#include <sys/mbuf.h>

struct mbstat {
ulong m_mbufs;
ulong m_clusters;
ulong m_spare;
ulong m_clfree;
ulong m_drops;
ulong m_wait;
ulong m_drain;
short m_mtypes[256];
}

m_mbufs	Specifies the number of mbuf structures allocated.
m_clusters	Specifies the number of clusters allocated.
m_spare	Specifies the spare field.
m_clfree	Specifies the number of free clusters.
m_drops	Specifies the times failed to find space.
m_wait	Specifies the times waited for space.
m_drain	Specifies the times drained protocols for space.
m_mtypes	Specifies the type-specific mbuf structure allocations.

The mbstat structure provides usage information for the mbuf services. Statistics can be viewed through the netstat -m command.

The netstat command.

I/O Kernel Services in AIX 5L Version 5.2 Kernel Extensions and Device Support Programming Concepts.