Date: Sun, 10 Jan 2016 16:32:31 +0800 From: Sepherosa Ziehau <sepherosa@gmail.com> To: "alex.burlyga.ietf alex.burlyga.ietf" <alex.burlyga.ietf@gmail.com> Cc: Ravi Pokala <rpokala@mac.com>, "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: [Differential] [Request, 6 lines] D4825: tcp/lro: Add network driver configurable LRO entry depth Message-ID: <CAMOc5cz3-D5noEvrKYaKiUuG7umZTjWJnAPJ%2BhOKpUSuP0NOgw@mail.gmail.com> In-Reply-To: <CA%2BJhTNSGN0gDin4O9QVMApQ546Uj31fjQvHL2OsjMqEESzs1gg@mail.gmail.com> References: <CF7AE0AF-5471-4454-8EFF-63E31957A420@panasas.com> <CA%2BJhTNSGN0gDin4O9QVMApQ546Uj31fjQvHL2OsjMqEESzs1gg@mail.gmail.com>
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On Sat, Jan 9, 2016 at 1:04 AM, alex.burlyga.ietf alex.burlyga.ietf <alex.burlyga.ietf@gmail.com> wrote: > Perhaps Sephe planing to use it as a sysctl? Yeah :) > > Alex. > On Jan 8, 2016 07:59, "Ravi Pokala" <rpokala@mac.com> wrote: > >> -----Original Message----- >> >> >> >Date: Fri, 8 Jan 2016 02:29:22 +0000 >> >From: "sepherosa_gmail.com (Sepherosa Ziehau)" >> > <phabric-noreply@FreeBSD.org> >> >To: freebsd-net@freebsd.org >> >Subject: [Differential] [Request, 6 lines] D4825: tcp/lro: Add network >> > driver configurable LRO entry depth >> >Message-ID: >> > <differential-rev-PHID-DREV-ou2jiti5cx3pzqhm5pb2-req@FreeBSD.org> >> >Content-Type: text/plain; charset="utf-8" >> > >> >sepherosa_gmail.com created this revision. >> >sepherosa_gmail.com added reviewers: network, adrian, delphij, >> decui_microsoft.com, honzhan_microsoft.com, howard0su_gmail.com, glebius. >> >sepherosa_gmail.com added a subscriber: freebsd-net-list. >> >Herald added a reviewer: transport. >> > >> >REVISION SUMMARY >> > When there is only tiny amount of TCP connections and the host is slow, >> e.g. in VM, holding too much TCP segments in an LRO entry will cause RX >> performance degradation. We now allow network drivers to configure how >> deep one LRO entry should be. >> >> Forgive me if I'm missing something obvious, but this patch doesn't >> actually change anything - rather than hard-coding 65535, you're using >> lc->lro_hiwat... which is hard-coded to 65535. >> >> Right? >> >> -Ravi (rpokala@) >> >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" -- Tomorrow Will Never Die
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