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Changpeng Liu d3d6d19bef spdk: add scattered payloads support to NVMe driver For the purpose to support different types of input scattered payloads, such as iovs or scattered list, we define common method in the NVMe driver, users should implement their own functions to iterate each segment memory. Change-Id: Id2765747296a66997518281af0db04888ffc4b53 Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>		2016-01-22 14:51:53 -07:00
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include/spdk	spdk: add scattered payloads support to NVMe driver	2016-01-22 14:51:53 -07:00
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autobuild.sh	spdk: add the ioat_kperf test tool to autobuild system	2016-01-22 07:58:13 -07:00
autopackage.sh	CONFIG: allow overriding options in make command	2015-10-22 12:24:57 -07:00
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CONFIG	ioat: add user-mode Intel I/OAT driver	2015-12-09 10:14:15 -07:00
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unittest.sh	ioat: add user-mode Intel I/OAT driver	2015-12-09 10:14:15 -07:00

README.md

Storage Performance Development Kit

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
libaio-devel

Ubuntu/Debian:

gcc
libpciaccess-dev
make
libcunit1-dev
libaio-dev

FreeBSD:

gcc
libpciaccess
gmake
cunit

Additionally, DPDK is required.

1) cd /path/to/spdk
2) wget http://dpdk.org/browse/dpdk/snapshot/dpdk-2.2.0.tar.gz
3) tar xfz dpdk-2.2.0.tar.gz
4) cd dpdk-2.2.0

Linux:

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

FreeBSD:

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

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-2.2.0/x86_64-native-linuxapp-gcc

FreeBSD:

gmake DPDK_DIR=./dpdk-2.2.0/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