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67 lines
2.6 KiB
Plaintext
Executable File
67 lines
2.6 KiB
Plaintext
Executable File
#!/usr/sbin/dtrace -s
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/*-
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* Copyright (c) 2015 George V. Neville-Neil
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The siftr D script collects data from the SIFTR kernel module.
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*
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* Usage: siftr
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*/
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#pragma D option quiet
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tcp:kernel::siftr
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{
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printf("direction %s state %s local %d remote %d\n",
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siftr_dir_string[args[0]->direction],
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tcp_state_string[args[0]->conn_state],
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args[0]->tcp_localport,
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args[0]->tcp_foreignport);
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printf("snd_cwnd %d snd_wnd %d rcv_wnd %d snd_bwnd %d snd_ssthresh %d\n",
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args[0]->snd_cwnd,
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args[0]->snd_wnd,
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args[0]->rcv_wnd,
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args[0]->snd_bwnd,
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args[0]->snd_ssthresh);
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printf("\tmax_seg_size %u smoothed_rtt %d sack_enabled %d\n",
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args[0]->max_seg_size,
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args[0]->smoothed_rtt,
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args[0]->sack_enabled);
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printf("\tsnd_scale %d rcv_scale %d flags 0x%x rxt_length %d\n",
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args[0]->snd_scale,
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args[0]->rcv_scale,
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args[0]->flags,
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args[0]->rxt_length);
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printf("\tsnd_buf_hiwater %u snd_buf_cc %u rcv_buf_hiwater %u\n",
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args[0]->snd_buf_hiwater,
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args[0]->snd_buf_cc,
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args[0]->rcv_buf_hiwater);
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printf("\trcv_buf_cc %u sent_inflight_bytes %u t_segqlen %d\n",
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args[0]->rcv_buf_cc,
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args[0]->sent_inflight_bytes,
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args[0]->t_segqlen);
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printf("\tflowid %u flowtype %u\n",
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args[0]->flowid,
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args[0]->flowtype);
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}
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