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Linux jobworks 6.8.0-136-generic #136-Ubuntu SMP PREEMPT_DYNAMIC Wed Jul 1 21:53:05 UTC 2026 x86_64
Apache/2.4.58 (Ubuntu)
Server IP : 10.0.1.5 & Your IP : 216.73.217.52
Domains : Cant Read [ /etc/named.conf ]
User : www-data

Name	Size	Permission	Date
CMakeLists.txt	276 B	-rw-r--r--	2023-12-08 15:36
biolatpcts.py	3.23 KB	-rwxr-xr-x	2023-12-08 15:36
biolatpcts_example.txt	650 B	-rw-r--r--	2023-12-08 15:36
bitehist.py	1.36 KB	-rwxr-xr-x	2023-12-08 15:36
bitehist_example.txt	1.18 KB	-rw-r--r--	2023-12-08 15:36
dddos.py	3.73 KB	-rwxr-xr-x	2023-12-08 15:36
dddos_example.txt	2.06 KB	-rw-r--r--	2023-12-08 15:36
disksnoop.py	1.9 KB	-rwxr-xr-x	2023-12-08 15:36
disksnoop_example.txt	1.55 KB	-rw-r--r--	2023-12-08 15:36
hello_fields.py	679 B	-rwxr-xr-x	2023-12-08 15:36
hello_perf_output.py	1.24 KB	-rwxr-xr-x	2023-12-08 15:36
hello_perf_output_using_ns.py	1.8 KB	-rwxr-xr-x	2023-12-08 15:36
kvm_hypercall.py	1.48 KB	-rwxr-xr-x	2023-12-08 15:36
kvm_hypercall.txt	1.74 KB	-rw-r--r--	2023-12-08 15:36
mallocstacks.py	1.9 KB	-rwxr-xr-x	2023-12-08 15:36
mysqld_query.py	1.66 KB	-rwxr-xr-x	2023-12-08 15:36
mysqld_query_example.txt	499 B	-rw-r--r--	2023-12-08 15:36
nflatency.py	6.07 KB	-rwxr-xr-x	2023-12-08 15:36
nodejs_http_server.py	1.34 KB	-rwxr-xr-x	2023-12-08 15:36
nodejs_http_server_example.txt	276 B	-rw-r--r--	2023-12-08 15:36
stack_buildid_example.py	3.03 KB	-rwxr-xr-x	2023-12-08 15:36
stacksnoop.py	3.18 KB	-rwxr-xr-x	2023-12-08 15:36
stacksnoop_example.txt	2.8 KB	-rw-r--r--	2023-12-08 15:36
strlen_count.py	1.3 KB	-rwxr-xr-x	2023-12-08 15:36
strlen_hist.py	1.81 KB	-rwxr-xr-x	2023-12-08 15:36
strlen_hist_ifunc.py	3.71 KB	-rwxr-xr-x	2023-12-08 15:36
strlen_snoop.py	1.35 KB	-rwxr-xr-x	2023-12-08 15:36
sync_timing.py	1.36 KB	-rwxr-xr-x	2023-12-08 15:36
task_switch.c	499 B	-rw-r--r--	2023-12-08 15:36
task_switch.py	486 B	-rwxr-xr-x	2023-12-08 15:36
tcpv4connect.py	2.36 KB	-rwxr-xr-x	2023-12-08 15:36
tcpv4connect_example.txt	1.04 KB	-rw-r--r--	2023-12-08 15:36
trace_fields.py	589 B	-rwxr-xr-x	2023-12-08 15:36
trace_perf_output.py	1.56 KB	-rwxr-xr-x	2023-12-08 15:36
undump.py	3.52 KB	-rwxr-xr-x	2023-12-08 15:36
undump_example.txt	886 B	-rw-r--r--	2023-12-08 15:36
urandomread-explicit.py	1.48 KB	-rwxr-xr-x	2023-12-08 15:36
urandomread.py	1.01 KB	-rwxr-xr-x	2023-12-08 15:36
urandomread_example.txt	675 B	-rw-r--r--	2023-12-08 15:36
vfsreadlat.c	896 B	-rw-r--r--	2023-12-08 15:36
vfsreadlat.py	1.3 KB	-rwxr-xr-x	2023-12-08 15:36
vfsreadlat_example.txt	3.53 KB	-rw-r--r--	2023-12-08 15:36

Rename

#!/usr/bin/python
#
# vfsreadlat.py		VFS read latency distribution.
#			For Linux, uses BCC, eBPF. See .c file.
#
# Written as a basic example of a function latency distribution histogram.
#
# USAGE: vfsreadlat.py [interval [count]]
#
# The default interval is 5 seconds. A Ctrl-C will print the partially
# gathered histogram then exit.
#
# Copyright (c) 2015 Brendan Gregg.
# Licensed under the Apache License, Version 2.0 (the "License")
#
# 15-Aug-2015	Brendan Gregg	Created this.

from __future__ import print_function
from bcc import BPF
from time import sleep
from sys import argv

def usage():
	print("USAGE: %s [interval [count]]" % argv[0])
	exit()

# arguments
interval = 5
count = -1
if len(argv) > 1:
	try:
		interval = int(argv[1])
		if interval == 0:
			raise
		if len(argv) > 2:
			count = int(argv[2])
	except:	# also catches -h, --help
		usage()

# load BPF program
b = BPF(src_file = "vfsreadlat.c")
b.attach_kprobe(event="vfs_read", fn_name="do_entry")
b.attach_kretprobe(event="vfs_read", fn_name="do_return")

# header
print("Tracing... Hit Ctrl-C to end.")

# output
loop = 0
do_exit = 0
while (1):
	if count > 0:
		loop += 1
		if loop > count:
			exit()
	try:
		sleep(interval)
	except KeyboardInterrupt:
		pass; do_exit = 1

print()
	b["dist"].print_log2_hist("usecs")
	b["dist"].clear()
	if do_exit:
		exit()