Date: Mon, 24 Jul 2006 18:38:20 +0100 From: David Malone <dwmalone@maths.tcd.ie> To: "Christian S.J. Peron" <csjp@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/net bpf.c Message-ID: <200607241838.aa38962@salmon.maths.tcd.ie> In-Reply-To: Your message of "Mon, 24 Jul 2006 10:51:20 CDT." <44C4EC78.8060401@FreeBSD.org>
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> Thanks for taking care of this! It is not very desirable for the same > packet to have different timestamps associated with it across different > bpf peers. It certainly could cause a problem if people are using > timestamps to correlate events from different programs on the same system. Indeed - calling microtime more than necessary and generating inconsistent timestamps just didn't seem good. I think jkim@ has interesting work related to this that might allow us to exploit hardware that does hardware timestamping of packets. It is some way down the road though. David.home | help
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