tcpdump mailing list archives
Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces
From: Guy Harris <guy () alum mit edu>
Date: Wed, 17 Apr 2013 19:38:01 -0700
On Apr 17, 2013, at 7:11 PM, abhinav narain <abhinavnarain10 () gmail com> wrote:
I am curious to know if tcpdump does something interesting to deal with such situation (I dint find anything when I last read the code..couple of months back)
It does absolutely nothing whatsoever to discover whether there are other versions of tcpdump are running.
Am I right to say that the two processes spin on some shared resource ?
Given that I don't know what routines in the programs or libraries they use are running when they're consuming that CPU time, I have absolutely no idea whether you're right or not to say that. That's why I wanted the profiling data - so that we *know* what routines are consuming the CPU time, not just *guessing*. Can you show us the source code to the parts of your program that make libpcap calls? _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 17)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces Guy Harris (Apr 17)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces Guy Harris (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces Guy Harris (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 19)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 19)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 24)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces abhinav narain (Apr 18)
- Re: tcpdump vs libpcap : CPU usage shooting high for two simultaneous captures on wireless monitor interfaces Guy Harris (Apr 17)