Date: Fri, 24 May 2013 11:45:51 -0400 From: Outback Dingo <outbackdingo@gmail.com> To: Igor Mozolevsky <igor@hybrid-lab.co.uk> Cc: Hackers freeBSD <freebsd-hackers@freebsd.org>, Axel Fischer <afischer@marvell.com>, Ralf Assmann <rassmann@marvell.com>, Lino Sanfilippo <lsanfil@marvell.com>, Markus Althoff <malthoff@marvell.com> Subject: Re: Low Tx-Rx performance with 10Gb NICs Message-ID: <CAKYr3zze5AX22oryxAhuojcZoyjMqm3BDYobxwdUME26s2LSAQ@mail.gmail.com> In-Reply-To: <CADWvR2hkjUMUpa-_R_RbkdJthERTeZNevAxe%2B6rZVA-sMy_qaQ@mail.gmail.com> References: <175CCF5F49938B4D99B2E3EF7F558EBE381FA6E5AA@SC-VEXCH4.marvell.com> <CADWvR2g_VfZcCrXH1TcOVtPKT8GLbSKaqcH46piFBUjoOzXWUA@mail.gmail.com> <1369406798.20748.30.camel@EL-DT095.site> <CADWvR2hkjUMUpa-_R_RbkdJthERTeZNevAxe%2B6rZVA-sMy_qaQ@mail.gmail.com>
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On Fri, May 24, 2013 at 11:41 AM, Igor Mozolevsky <igor@hybrid-lab.co.uk>wrote: > On Friday, 24 May 2013, Axel Fischer wrote: > > > Additionally I noticed the following TCP errors > > with netstat -s ...: > > > > 1186 data packets (1717328 bytes) retransmitted > > 6847875 window update packets > > 2319 duplicate acks > > 25831 out-of-order packets (37403288 bytes) > > 3733 discarded due to memory problems (drops) > > 1186 segment rexmits in SACK recovery episodes > > 1717328 byte rexmits in SACK recovery episodes > > > > > > > > Looks like your data is flooding your memory buffers, have a look through > https://calomel.org/freebsd_network_tuning.html > > Ive got an 10Gb ix card i cant get to do more then 1.2Gbs send on FreeBSD 9-stable pretty frustrating hunting down the issue. > -- > Igor M. > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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