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Daniel Verkamp d4ab30ba33 ioat: add user-mode Intel I/OAT driver 
The ioat driver supports DMA engine copy offload hardware available on
Intel Xeon platforms.

Change-Id: Ida0b17b25816576948ddb1b0443587e0f09574d4
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2015-12-09 10:14:15 -07:00
doc ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
examples ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
include/spdk ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
lib ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
mk ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
scripts ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
test ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
.astylerc build: check formatting with astyle 2015-09-23 09:05:51 -07:00
.gitignore build: add CONFIG_COVERAGE code coverage option 2015-11-02 14:40:49 -07:00
.travis.yml build: add Travis CI integration 2015-11-04 11:05:59 -07:00
autobuild.sh autobuild: add sleep to fix dependency test 2015-11-03 15:19:36 -07:00
autopackage.sh CONFIG: allow overriding options in make command 2015-10-22 12:24:57 -07:00
autotest.sh ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
CONFIG ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
LICENSE SPDK: Initial check-in 2015-09-21 08:52:41 -07:00
Makefile build: allow make to work from any directory 2015-11-04 10:19:08 -07:00
PORTING.md Add porting guide. 2015-09-28 09:07:19 -07:00
README.md ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
unittest.sh ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00

README.md

Storage Performance Development Kit

Build Status

SPDK on 01.org

The Storage Performance Development Kit (SPDK) provides a set of tools and libraries for writing high performance, scalable, user-mode storage applications. It achieves high performance by moving all of the necessary drivers into userspace and operating in a polled mode instead of relying on interrupts, which avoids kernel context switches and eliminates interrupt handling overhead.

Documentation

Doxygen API documentation

Porting Guide

Prerequisites

To build SPDK, some dependencies must be installed.

Fedora/CentOS:

  • gcc
  • libpciaccess-devel
  • CUnit-devel

Ubuntu/Debian:

  • gcc
  • libpciaccess-dev
  • make
  • libcunit1-dev

FreeBSD:

  • gcc
  • libpciaccess
  • gmake
  • cunit

Additionally, DPDK is required.

1) cd /path/to/spdk
2) wget http://dpdk.org/browse/dpdk/snapshot/dpdk-2.1.0.tar.gz
3) tar xfz dpdk-2.1.0.tar.gz
4) cd dpdk-2.1.0

Linux:

5) make install T=x86_64-native-linuxapp-gcc

FreeBSD:

5) gmake install T=x86_64-native-bsdapp-clang

Building

Once the prerequisites are installed, run 'make' within the SPDK directory to build the SPDK libraries and examples.

make DPDK_DIR=/path/to/dpdk

If you followed the instructions above for building DPDK:

Linux:

make DPDK_DIR=./dpdk-2.1.0/x86_64-native-linuxapp-gcc

FreeBSD:

gmake DPDK_DIR=./dpdk-2.1.0/x86_64-native-bsdapp-clang

Hugepages and Device Binding

Before running an SPDK application, some hugepages must be allocated and any NVMe and I/OAT devices must be unbound from the native kernel drivers. SPDK includes scripts to automate this process on both Linux and FreeBSD.

1) scripts/configure_hugepages.sh
2) scripts/unbind.sh