Date: Thu, 17 Jun 2004 15:49:35 +0900 From: Pyun YongHyeon <yongari@kt-is.co.kr> To: Herve Boulouis <amon@sockar.homeip.net> Cc: freebsd-sparc64@freebsd.org Subject: Re: TCP/UDP cksum offload on hme(4) Message-ID: <20040617064935.GB11797@kt-is.co.kr> In-Reply-To: <20040616234258.A95312@ra.aabs> References: <20040616034520.GB7887@kt-is.co.kr> <20040616234258.A95312@ra.aabs>
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On Wed, Jun 16, 2004 at 11:42:58PM +0200, Herve Boulouis wrote: > Le 16/06/2004 ? 12:45, Pyun YongHyeon a ?crit: > > Hello All, > > > > 2. The patch was tested on Ultra2(2x300MHz, FAS366). I'd like to > > hear ok/nok results from PCI based sparc64 users. > > The dmesg of the Ultra2 is available at: > > http:///www.kr.freebsd.org/~yognari/dmesg.u2.txt > > > > 3. I couldn't feel performance boost from the cksum offloads but > > enabling it reduced system loads considerably. > > After some very basic testing (mainly ftp transfers), your patch > seems to work correctly on my netra t 1125 (2*300Mhz). > > My -current is from mid april. > Thanks for your report. Did you get some speed up by cksum offload? Did you notice system loads changes under heavy traffic? How about NFS over UDP transport layer? I can't saturate the wire with/without my patch.(For TCP without witness it was about 67Mbps. On OpenBSD I got about 93Mbps.) I vaguely guess the reason was caused by hme's lack of auto-negotiation. > -- > Herve Boulouis Regards, Pyun YongHyeon -- Pyun YongHyeon <http://www.kr.freebsd.org/~yongari>;
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