File: nfs_func_users.stp

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#!/usr/bin/env stap

global nfsdcalls

probe begin {
  printf("Collecting top NFSD procs...\n")
}

probe {kernel,module("nfs")}.function("*@fs/nfs/*proc.c") ? {
  nfsdcalls[execname(), pid()]++
}

probe end {
  printf("\nname(pid) nfs ops\n");
  foreach ([name,p] in nfsdcalls- limit 20)
    printf("%s(%d) %d\n", name, p, nfsdcalls[name, p])
}