lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sun, 19 Aug 2007 18:45:24 -0700 From: "Felix Marti" <felix@...lsio.com> To: "Andi Kleen" <andi@...stfloor.org> Cc: "David Miller" <davem@...emloft.net>, <jeff@...zik.org>, <netdev@...r.kernel.org>, <rdreier@...co.com>, <linux-kernel@...r.kernel.org>, <general@...ts.openfabrics.org> Subject: RE: [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate PS_TCPportsfrom the host TCP port space. > -----Original Message----- > From: ak@...e.de [mailto:ak@...e.de] On Behalf Of Andi Kleen > Sent: Sunday, August 19, 2007 4:28 PM > To: Felix Marti > Cc: David Miller; jeff@...zik.org; netdev@...r.kernel.org; > rdreier@...co.com; linux-kernel@...r.kernel.org; > general@...ts.openfabrics.org > Subject: Re: [ofa-general] Re: [PATCH RFC] RDMA/CMA: Allocate > PS_TCPportsfrom the host TCP port space. > > "Felix Marti" <felix@...lsio.com> 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 netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists