1 The following is an example of the modcalls.d oneliner, 2 3 4 Here we run it for a few seconds then hit Ctrl-C, 5 6 # modcalls.d 7 dtrace: script './modcalls.d' matched 18437 probes 8 ^C 9 10 ptm 2 11 mntfs 2 12 pool 2 13 kcf 4 14 pts 5 15 portfs 6 16 pset 6 17 ttcompat 9 18 ptem 9 19 devfs 13 20 ipf 15 21 namefs 20 22 ctfs 22 23 procfs 22 24 ldterm 23 25 ipgpc 48 26 sockfs 58 27 flowacct 69 28 ata 70 29 gld 75 30 rtls 76 31 specfs 83 32 ip 201 33 uhci 294 34 TS 333 35 tmpfs 694 36 doorfs 897 37 ufs 1329 38 uppc 5617 39 unix 49794 40 genunix 53445 41 42 The output lists kernel modules, and the number of function calls for 43 each module. For example, "rtls" - the network driver, called 76 functions. 44 45 This script may be useful to determine whether drivers are "thinking" when 46 troubleshooting driver issues. 47 48
Indexes created Thu Apr 23 00:23:13 UTC 2026