FM / examples

/usr/share/doc/bpftrace/examples

Name	Size	Mode	Actions
bashreadline_example.txt	722	0644	edit dl rm
biolatency_example.txt	1790	0644	edit dl rm
biosnoop_example.txt	2056	0644	edit dl rm
biostacks_example.txt	1914	0644	edit dl rm
bitesize_example.txt	3003	0644	edit dl rm
capable_example.txt	2659	0644	edit dl rm
cpuwalk_example.txt	4919	0644	edit dl rm
dcsnoop_example.txt	4612	0644	edit dl rm
execsnoop_example.txt	1535	0644	edit dl rm
gethostlatency_example.txt	923	0644	edit dl rm
killsnoop_example.txt	846	0644	edit dl rm
loads_example.txt	864	0644	edit dl rm
mdflush_example.txt	1866	0644	edit dl rm
naptime_example.txt	844	0644	edit dl rm
oomkill_example.txt	1668	0644	edit dl rm
opensnoop_example.txt	2528	0644	edit dl rm
pidpersec_example.txt	1504	0644	edit dl rm
runqlat_example.txt	8632	0644	edit dl rm
runqlen_example.txt	980	0644	edit dl rm
setuids_example.txt	2441	0644	edit dl rm
ssllatency_example.txt	4510	0644	edit dl rm
sslsnoop_example.txt	1916	0644	edit dl rm
statsnoop_example.txt	2738	0644	edit dl rm
swapin_example.txt	549	0644	edit dl rm
syncsnoop_example.txt	541	0644	edit dl rm
syscount_example.txt	1144	0644	edit dl rm
tcpaccept_example.txt	1350	0644	edit dl rm
tcpconnect_example.txt	1085	0644	edit dl rm
tcpdrop_example.txt	1256	0644	edit dl rm
tcplife_example.txt	1597	0644	edit dl rm
tcpretrans_example.txt	1153	0644	edit dl rm
tcpsynbl_example.txt	940	0644	edit dl rm
threadsnoop_example.txt	1182	0644	edit dl rm
undump_example.txt	680	0644	edit dl rm
vfscount_example.txt	1199	0644	edit dl rm
vfsstat_example.txt	929	0644	edit dl rm
writeback_example.txt	1962	0644	edit dl rm
xfsdist_example.txt	3419	0644	edit dl rm

Edit: /usr/share/doc/bpftrace/examples/syscount_example.txt (1144B)

Demonstrations of syscount, the Linux bpftrace/eBPF version.

syscount counts system calls, and prints summaries of the top ten syscall IDs,
and the top ten process names making syscalls. For example:

# ./syscount.bt
Attaching 3 probes...
Counting syscalls... Hit Ctrl-C to end.
^C
Top 10 syscalls IDs:
@syscall[6]: 36862
@syscall[21]: 42189
@syscall[13]: 44532
@syscall[12]: 58456
@syscall[9]: 82113
@syscall[8]: 95575
@syscall[5]: 147658
@syscall[3]: 163269
@syscall[2]: 270801
@syscall[4]: 326333

Top 10 processes:
@process[rm]: 14360
@process[tail]: 16011
@process[objtool]: 20767
@process[fixdep]: 28489
@process[as]: 48982
@process[gcc]: 90652
@process[command-not-fou]: 172874
@process[sh]: 270515
@process[cc1]: 482888
@process[make]: 1404065

The above output was traced during a Linux kernel build, and the process name
with the most syscalls was "make" with 1,404,065 syscalls while tracing. The
highest syscall ID was 4, which is stat().

There is another version of this tool in bcc: https://github.com/iovisor/bcc
The bcc version provides different command line options, and translates the
syscall IDs to their syscall names.

Demonstrations of syscount, the Linux bpftrace/eBPF version. syscount counts system calls, and prints summaries of the top ten syscall IDs, and the top ten process names making syscalls. For example: # ./syscount.bt Attaching 3 probes... Counting syscalls... Hit Ctrl-C to end. ^C Top 10 syscalls IDs: @syscall[6]: 36862 @syscall[21]: 42189 @syscall[13]: 44532 @syscall[12]: 58456 @syscall[9]: 82113 @syscall[8]: 95575 @syscall[5]: 147658 @syscall[3]: 163269 @syscall[2]: 270801 @syscall[4]: 326333 Top 10 processes: @process[rm]: 14360 @process[tail]: 16011 @process[objtool]: 20767 @process[fixdep]: 28489 @process[as]: 48982 @process[gcc]: 90652 @process[command-not-fou]: 172874 @process[sh]: 270515 @process[cc1]: 482888 @process[make]: 1404065 The above output was traced during a Linux kernel build, and the process name with the most syscalls was "make" with 1,404,065 syscalls while tracing. The highest syscall ID was 4, which is stat(). There is another version of this tool in bcc: https://github.com/iovisor/bcc The bcc version provides different command line options, and translates the syscall IDs to their syscall names.