Wireshark mailing list archives
Re: Why does the extcap stuff take so long to start up?
From: Guy Harris <guy () alum mit edu>
Date: Mon, 27 Mar 2017 13:14:18 -0700
On Mar 26, 2017, at 11:30 PM, Michał Łabędzki <michal.tomasz.labedzki () gmail com> wrote:
Could you check if any of extcap binaries generates that delay?
A lot of the delay comes from extcap *non*-binaries; the code that scans the extcap directory tried running *everything* it finds there, except for "." and "..", and, if you're running from the build directory, that means executing somewhat heavyweight {fork/vfork}-exec calls on a bunch of source files, object files, .deps directories, Makefiles, etc.. bd3196b094ae46fa4396edbb406d68056cba6974 fixed that. Currently, with that fix, I get results like $ time ./tshark -r /tmp/nothing.pcap real 0m1.407s user 0m0.312s sys 0m0.676s with the extcap directory in place and results like $ time ./tshark -r /tmp/nothing.pcap real 0m0.334s user 0m0.182s sys 0m0.146s with the extcap directory moved out of the way, so the extcap executables are taking some time to run, but it's better than wasting time trying to run androiddump.c or Makefile.am. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://www.wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Why does the extcap stuff take so long to start up? Guy Harris (Mar 26)
- Re: Why does the extcap stuff take so long to start up? Michał Łabędzki (Mar 26)
- Re: Why does the extcap stuff take so long to start up? Guy Harris (Mar 27)
- Re: Why does the extcap stuff take so long to start up? Dario Lombardo (Mar 27)
- Re: Why does the extcap stuff take so long to start up? Guy Harris (Mar 27)
- Re: Why does the extcap stuff take so long to start up? Michał Łabędzki (Mar 27)
- Re: Why does the extcap stuff take so long to start up? Dario Lombardo (Mar 28)
- Re: Why does the extcap stuff take so long to start up? Anders Broman (Mar 28)
- Re: Why does the extcap stuff take so long to start up? Guy Harris (Mar 27)
- Re: Why does the extcap stuff take so long to start up? Michał Łabędzki (Mar 26)