You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
32 lines
778 B
32 lines
778 B
#!/usr/bin/env python
|
|
# @lint-avoid-python-3-compatibility-imports
|
|
#
|
|
# syncsnoop Trace sync() syscall.
|
|
# For Linux, uses BCC, eBPF. Embedded C.
|
|
#
|
|
# Written as a basic example of BCC trace & reformat. See
|
|
# examples/hello_world.py for a BCC trace with default output example.
|
|
#
|
|
# Copyright (c) 2015 Brendan Gregg.
|
|
# Licensed under the Apache License, Version 2.0 (the "License")
|
|
#
|
|
# 13-Aug-2015 Brendan Gregg Created this.
|
|
|
|
from __future__ import print_function
|
|
from bcc import BPF
|
|
|
|
# load BPF program
|
|
b = BPF(text="""
|
|
void kprobe__sys_sync(void *ctx) {
|
|
bpf_trace_printk("sync()\\n");
|
|
};
|
|
""")
|
|
|
|
# header
|
|
print("%-18s %s" % ("TIME(s)", "CALL"))
|
|
|
|
# format output
|
|
while 1:
|
|
(task, pid, cpu, flags, ts, msg) = b.trace_fields()
|
|
print("%-18.9f %s" % (ts, msg))
|