--- On Wed, 1/9/13, sth...@nethelp.no <sth...@nethelp.no> wrote:
> From: sth...@nethelp.no <sth...@nethelp.no> > Subject: Re: To SMP or not to SMP > To: erichsfreebsdl...@alogt.com > Cc: barney_cord...@yahoo.com, freebsd-net@freebsd.org, jack.vo...@gmail.com, > atkin...@gmail.com > Date: Wednesday, January 9, 2013, 9:32 AM > > > 4BSD runs pretty well with > an SMP kernel. I can test ULE and compare > > > easily. A no SMP kernel is problematic as the igb > driver doesn't seem > > > to work and my onboard NICs are, sadly, igb. > > > > > this is bad luck. I know of the kernels as I have had > SMP and single > > CPU machines since 4.x times. > > I have had igb working with both SMP and non-SMP kernel for > at least a > year or two, 8.x-STABLE. No specific problems. > > Steinar Haug, Nethelp consulting, sth...@nethelp.no > Maybe a problem with "legacy interrupts" on more modern processors? I'm using an E5520 and while the NIC inits ok, it just doesnt seem to gen interrupts. I can't spend much time debugging it.... I notice that HAMMER kernels use MSI/X interrupts whether SMP is enabled or not, while i386 kernels seem to require APIC. Is there some physical reason for this? BC _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
