Date: Tue, 04 Jan 2005 09:29:16 -0800 From: sp0ng3b0b <sp0ng3b0b@sbcglobal.net> To: James Kilton <kilton9@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: TCPDUMP performance Message-ID: <41DAD26C.9010500@sbcglobal.net> In-Reply-To: <20050102152416.65565.qmail@web51904.mail.yahoo.com> References: <20050102152416.65565.qmail@web51904.mail.yahoo.com>
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James Kilton wrote: > Hello, > > We've installed some FreeBSD machines as Gigabit sniffers, and I'm > wondering if there are any things I can tweak (e.g., buffer size) to help > TCPDUMP capture better (we often see packets dropped by the kernel). > > Any advice would be appreciated. > > Thanks, > James > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > Enable device polling. Add the following options to your kernel config, and then compile and install the new kernel: options DEVICE_POLLING options HZ=1000 After reboot, enable polling mode on with: sysctl kern.polling.enable=1
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