netdev - virtio-net zero-copy

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <bd8f29360905180619g3ccee719m268f57e63a88fd4f@mail.gmail.com>
Date:	Mon, 18 May 2009 21:19:47 +0800
From:	Raju Srivastava <raju.s.linux@...il.com>
To:	netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: virtio-net zero-copy

Greetings,

Could someone let me know if current virtio-net supports zero-copy? I
see some discussion here:
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/28061/
(copyless virtio net thoughts) and it looks like the copyless
virtio-net is not supported by KVM yet. If this is true, then is there
any plan to add the zero copy to the virtio-net?

I use KVM in 10G network environment and found the CPU usage is
saturated when network traffic becomes heavy. The native Linux under
the same load only consumes less than 10% CPU.

Thanks in advance,
Raju
--
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