Date: Sat, 26 Nov 2011 11:16:58 -0500 From: George Mitchell <george+freebsd@m5p.com> To: Lawrence Stewart <lstewart@freebsd.org>, freebsd-stable@freebsd.org Subject: Re: TCP Reassembly Issues Message-ID: <4ED110FA.4060406@m5p.com> In-Reply-To: <4ED077BF.10205@freebsd.org> References: <CAPNZ-Wq38=F3o2hYuYF_unBj3SZQ52XhVhdcwQ8PE_vU9xc2YA@mail.gmail.com> <4ECEF6FD.5050006@freebsd.org> <4ED077BF.10205@freebsd.org>
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On 11/26/11 00:23, Lawrence Stewart wrote: > [...] > Could those who have reported the bug and are able to recompile their > kernel to test a patch please try the following and report back to the > list: > > http://people.freebsd.org/~lstewart/patches/misctcp/tcp_reass_plugzoneleak_10.x.r227986.patch > [...] Works for me! I'm now getting a sustained throughput of 7.4MB/s, compared to 4.3MB/s on 8.2-STABLE and 3.2MB/s on 7.4-RELEASE, all on the same hardware (HP notebook with re 100Mb/s interface, reading from an 8.2-STABLE server with an alc 1000Mb/s interface, via two gigabit switches). But I'm still bemused that there should have been any TCP reassembly going on. Doesn't that imply that there was packet fragmentation? My network is uniformly 1500 byte MTU. -- George
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