Date: Sun, 16 Oct 2005 23:56:04 +0200 From: Roger Skjetlein <rskjetlein@atmel.com> To: Robert Watson <rwatson@freebsd.org> Cc: freebsd-smp@freebsd.org Subject: Re: Poor network performance in 5.4 AMD64 Snap 8 with SMP support Message-ID: <4352CC74.5060801@atmel.com> In-Reply-To: <20051016215759.S66014@fledge.watson.org> References: <20051008011047.T58661@netrunner.nu> <20051016215759.S66014@fledge.watson.org>
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I did try it, same problem occured. It disappered when I disabled hyperthreading in bios. 6.0- beta 5 and rc1 works fine with all features enabled. Robert Watson wrote: > > On Sat, 8 Oct 2005, Roger Skjetlein wrote: > >> I have a server with a Supermikro mainboard and two Xeon 3.0Ghz/2MB. >> When running kernel with SMP support the network performance is very >> poor, this is very visible on NFS traffic. When running UP kernel the >> performance is as espected and very good. >> >> I have tried some different GB nics and the problems is static and >> independent of modell/brand. >> >> I have also disabled as much as hardware possible, no usb, sio and etc. >> >> Typical indicator is also that the load on the box is skyrocketing >> when it starts to serve nfs client, but the cpu load is very load. >> >> Is there any way around this problem? > > > Is it possible for you to test using an i386 install rather than an > amd64 install, for reference? I use Xeon SMP test hardware in the > netperf cluster, and have no problem saturating multiple gigabit > ethernet links with either UP or SMP kernels. However, all the Xeons I > have access to are 32-bit CPUs. > > Robert N M Watson > _______________________________________________ > freebsd-smp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-smp > To unsubscribe, send any mail to "freebsd-smp-unsubscribe@freebsd.org"
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