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Michael Brown b2c7b6a85e [intel] Push new RX descriptors in batches

Inside a virtual machine, writing the RX ring tail pointer may incur a
substantial overhead of processing inside the hypervisor.  Minimise
this overhead by writing the tail pointer once per batch of
descriptors, rather than once per descriptor.

Profiling under qemu-kvm (version 1.6.2) shows that this reduces the
amount of time taken to refill the RX descriptor ring by around 90%.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

2014-04-27 23:14:48 +01:00

contrib

[errdb] Strip platform error code for non-platform-generated errors

2013-04-29 15:36:32 +01:00

src

[intel] Push new RX descriptors in batches

2014-04-27 23:14:48 +01:00

COPYING

Initial revision

2005-05-17 16:44:57 +00:00

COPYRIGHTS

[build] Rename gPXE to iPXE

2010-04-19 23:43:39 +01:00

README

[doc] Re-add README file

2010-05-28 00:03:47 +01:00

README

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org

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