struct Cfsmsg {	ulong	n;			/* number of messages (of some type) */	vlong	t;			/* time spent in these messages */	vlong	s;			/* start time of last call */}; struct Cfsstat {	struct Cfsmsg cm[128];		/* client messages */	struct Cfsmsg sm[128];		/* server messages */ 	ulong ndirread;			/* # of directory read ops */	ulong ndelegateread;		/* # of read ops delegated */	ulong ninsert;			/* # of cache insert ops */	ulong ndelete;			/* # of cache delete ops */	ulong nupdate;			/* # of cache update ops */ 	uvlong bytesread;		/* # of bytes read by client */	uvlong byteswritten;		/* # of bytes written by client */	uvlong bytesfromserver;		/* # of bytes read from server */	uvlong bytesfromdirs;		/* # of directory bytes read from server */	uvlong bytesfromcache;		/* # of bytes read from cache */	uvlong bytestocache;		/* # of bytes written to cache */}; extern struct Cfsstat cfsstat, cfsprev;extern int statson;