Time

viper has asked for the wisdom of the Perl Monks concerning the following question:

Hello, I am implementing the logging function in my sniffer program and I need to log the packets along with the time in epoch seconds. The time function only provides whole seconds, I need more precision; I need to have the milliseconds as well. Thanks for any help you can give me.

Comment on Time

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Re: Time by lhoward (Vicar) on Aug 19, 2000 at 22:29 UTC
Since you're writing a sniffer, aparently in Perl, you're almost certainly using Net::Pcap to implement the packet capturing. Why not use the second and microsecond timestamps that Net::Pcap give you with each packet it returns? Excerpt from the Net::Pcap docs The header information is a reference to a hash containing the following fields. ... tv_sec - Seconds value of the packet timestamp. tv_usec - Microseconds value of the packet timestamp. Those should be the packet timestamps from the NIC or your OSes kernel; which should be slightly more accurate than an timestamp generated inside your application.	[reply]
RE: Re: Time by Anonymous Monk on Aug 20, 2000 at 03:19 UTC
Thanks.	[reply]
Re: Time by nardo (Friar) on Aug 19, 2000 at 21:41 UTC
Time::Hires provides gettimeofday.	[reply]
RE: Time (CPAN search results) by ybiC (Prior) on Aug 19, 2000 at 21:53 UTC
I've not worked with any of these myself, but a quick CPAN search for "time" turns up DateTime::Precise, and Event::timer and Time::HiRes, plus a whole slew of other modules. The last one (Time::HiRes) looks most promising. Update: Looks like nardo beat me to the punch. But then, he's right outside the window, so what do you expect? (grin) cheers, ybiC	[reply]