> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andi Kleen > Sent: Sunday, August 19, 2007 4:28 PM > To: Felix Marti > Cc: David Miller; [EMAIL PROTECTED]; [EMAIL PROTECTED]; > [EMAIL PROTECTED]; linux-kernel@vger.kernel.org; > [EMAIL PROTECTED] > Subject: Re: [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate > PS_TCPportsfrom the host TCP port space. > > "Felix Marti" <[EMAIL PROTECTED]> writes: > > > what benefits does the TSO infrastructure give the > > non-TSO capable devices? > > It improves performance on software queueing devices between guests > and hypervisors. This is a more and more important application these > days. Even when the system running the Hypervisor has a non TSO > capable device in the end it'll still save CPU cycles this way. Right > now > virtualized IO tends to much more CPU intensive than direct IO so any > help it can get is beneficial. > > It also makes loopback faster, although given that's probably not that > useful. > > And a lot of the "TSO infrastructure" was needed for zero copy TX > anyways, > which benefits most reasonable modern NICs (anything with hardware > checksumming) Hi Andi, yes, you're right. I should have chosen my example more carefully.
> > -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
