tcpdump mailing list archives
Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal?
From: Michael Richardson <mcr () sandelman ca>
Date: Fri, 09 Jan 2015 11:30:51 -0500
Guy Harris <guy () alum mit edu> wrote: > The longer timeout can reduce capturing overhead, and if you're > capturing a high volume of traffic to a file, it's probably the right > timeout to have. If, however, you're printing packets to the console, > you're probably doomed if it's a high volume of traffic, and may want > less of a delay if it's a low volume of traffic. > Should we reduce the timeout if -w isn't specified - or do so if -w > isn't specified *and* if we're outputting to a terminal (isatty(1) > returns a non-zero value)? Should we use immediate mode if libpcap Yes, I think that -w not specified, and isatty()==1. > supports it? Should we offer a command-line option to override the > default? (I'd prefer to have the default be appropriate for most > cases, which may mean a different default if printing packets or if I think that we should be able to override things. I had hoped to spend time on tcpdump over the holidays, but IETF nomcom work ate my brain. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] mcr () sandelman ca http://www.sandelman.ca/ | ruby on rails [ _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- Libpcap timeout settings in tcpdump - too long when printing to a terminal? Guy Harris (Jan 08)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Michal Sekletar (Jan 09)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Guy Harris (Jan 09)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? David Laight (Jan 12)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? vipul Kumar (Jan 13)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Guy Harris (Jan 09)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Michal Sekletar (Jan 09)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Michael Richardson (Jan 09)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Guy Harris (Feb 10)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? David Laight (Feb 11)
- Re: Libpcap timeout settings in tcpdump - too long when printing to a terminal? Guy Harris (Feb 10)