https://github.com/TritonDataCenter/portsnoop

trace event port activity
https://github.com/TritonDataCenter/portsnoop

Last synced: about 2 months ago
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trace event port activity

• Host: GitHub
• URL: https://github.com/TritonDataCenter/portsnoop
• Owner: TritonDataCenter
• License: mit
• Created: 2012-08-04T00:52:51.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2014-03-07T00:10:18.000Z (over 10 years ago)
• Last Synced: 2024-05-03T08:22:52.676Z (about 2 months ago)
• Language: Perl
• Size: 121 KB
• Stars: 3
• Watchers: 8
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-dtrace - portsnoop - Trace event port activity. (Tools / Visualization)

README

        
# portsnoop: trace event port activity

portsnoop is a DTrace script to trace event port activity on illumos-based

systems.  It traces:

    * port\_get or port\_getn when either one fails or returns at least 1 event

    * the first 30 events returned by each port\_get or port\_getn invocation

    * all calls to port\_associate and port\_dissociate

    * calls to read, write, accept, or close between a returned event and a call

      to port\_associate for the same file descriptor

There are probably useful cases that are missing.  Contributions welcome.

Here's an example of watching Node.js:

    TIME        TID  SYSCALL             FD  DETAILS                    ERROR      

     12.208422    1  port_associate       6  0x01

     12.242194    1  port_associate       9  0x01

     12.255736    1  port_getn            -  1 events

     12.274277    1   PORT_SOURCE_FD      9  fdevents 0x01

     12.328980    1      read             9  = 385                    

     12.271295    1  port_associate       9  0x01

     12.288007    1  port_getn            -  1 events

     12.298038    1   PORT_SOURCE_FD      4  fdevents 0x01

     12.328153    1      read             4  = 1                      

     12.629188    1  port_associate       4  0x01

     12.645012    1  port_getn            -  1 events

     12.654589    1   PORT_SOURCE_FD      4  fdevents 0x01

     12.682737    1      read             4  = 1                      

     12.416725    1  port_associate       4  0x01

     12.432715    1  port_getn            -  1 events

     12.442648    1   PORT_SOURCE_FD      4  fdevents 0x01

     12.471463    1      read             4  = 1                      

     12.508922    1  port_associate       4  0x01

     12.521278    1  port_getn            -  1 events

     12.528865    1   PORT_SOURCE_FD      4  fdevents 0x01

     12.553993    1      read             4  = 1                      

     12.574697    1  port_associate       4  0x01

     12.822090    1  port_getn            -  1 events

     12.831173    1   PORT_SOURCE_FD      6  fdevents 0x01

     12.869254    1      accept           6  = 11                     

     12.088036    1      accept           6  = -1                       (errno = 11)

     12.125804    1  port_associate       6  0x01

     12.149611    1  port_associate      11  0x01

     13.033215    1  port_getn            -  1 events

     13.043168    1   PORT_SOURCE_FD      6  fdevents 0x01

     13.078822    1      accept           6  = 12                     

     13.145472    1      accept           6  = 23                     

     13.194127    1      accept           6  = -1                       (errno = 11)

     13.225361    1  port_associate       6  0x01

     13.248414    1  port_associate      12  0x01

     13.269476    1  port_associate      23  0x01

     13.310552    1  port_getn            -  1 events

     13.320322    1   PORT_SOURCE_FD      6  fdevents 0x01

     13.353921    1      accept           6  = 30                     

     13.431817    1      accept           6  = 37                     

     13.478750    1      accept           6  = -1                       (errno = 11)

     13.510167    1  port_associate       6  0x01

     13.533580    1  port_associate      30  0x01

     13.554498    1  port_associate      37  0x01