#!/usr/bin/env bpftrace
/*
* vfsstat Count some VFS calls, with per-second summaries.
* For Linux, uses bpftrace and eBPF.
*
* Written as a basic example of counting multiple events and printing a
* per-second summary.
*
* USAGE: vfsstat.bt
*
* This is a bpftrace version of the bcc tool of the same name.
*
* Copyright 2018 Netflix, Inc.
* Licensed under the Apache License, Version 2.0 (the "License")
*
* 06-Sep-2018 Brendan Gregg Created this.
*/
BEGIN
{
printf("Tracing key VFS calls... Hit Ctrl-C to end.\n");
}
kprobe:vfs_read*,
kprobe:vfs_write*,
kprobe:vfs_fsync,
kprobe:vfs_open,
kprobe:vfs_create
{
@[func] = count();
}
interval:s:1
{
time();
print(@);
clear(@);
}
END
{
clear(@);
}
Mini Shell