1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
#!/usr/sbin/dtrace -s
/*-
* Copyright (c) 2015 George V. Neville-Neil
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
* The siftr D script collects data from the SIFTR kernel module.
*
* Usage: siftr
*/
#pragma D option quiet
tcp:kernel::siftr
{
printf("direction %s state %s local %d remote %d\n",
siftr_dir_string[args[0]->direction],
tcp_state_string[args[0]->conn_state],
args[0]->tcp_localport,
args[0]->tcp_foreignport);
printf("snd_cwnd %d snd_wnd %d rcv_wnd %d snd_bwnd %d snd_ssthresh %d\n",
args[0]->snd_cwnd,
args[0]->snd_wnd,
args[0]->rcv_wnd,
args[0]->snd_bwnd,
args[0]->snd_ssthresh);
printf("\tmax_seg_size %u smoothed_rtt %d sack_enabled %d\n",
args[0]->max_seg_size,
args[0]->smoothed_rtt,
args[0]->sack_enabled);
printf("\tsnd_scale %d rcv_scale %d flags 0x%x rxt_length %d\n",
args[0]->snd_scale,
args[0]->rcv_scale,
args[0]->flags,
args[0]->rxt_length);
printf("\tsnd_buf_hiwater %u snd_buf_cc %u rcv_buf_hiwater %u\n",
args[0]->snd_buf_hiwater,
args[0]->snd_buf_cc,
args[0]->rcv_buf_hiwater);
printf("\trcv_buf_cc %u sent_inflight_bytes %u t_segqlen %d\n",
args[0]->rcv_buf_cc,
args[0]->sent_inflight_bytes,
args[0]->t_segqlen);
printf("\tflowid %u flowtype %u\n",
args[0]->flowid,
args[0]->flowtype);
}
|
