Date: Thu, 30 Jan 2014 10:06:28 -0500 (EST) From: Rick Macklem <rmacklem@uoguelph.ca> To: FreeBSD Net <freebsd-net@freebsd.org> Subject: Re: 64K NFS I/O generates a 34mbuf list for TCP which breaks TSO Message-ID: <1217356349.106076.1391094388165.JavaMail.root@uoguelph.ca>
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Hi, just adding one more idea on what to do about this to the list: - Add a if_hw_tsomaxseg and modify the loop in tcp_output() so that it uses both if_hw_tsomax and if_hw_tsomaxseg to decide how much to hand to the device driver in each mbuf list. (I haven't looked to see how easy it would be to change this loop.) rick
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