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Daniel Verkamp 16c75b8af7 nvme: reorder parent member of struct nvme_request 
The parent field is no longer used in the normal (non-split) I/O path,
so move it down to the default-uninitialized part of struct nvme_request
that is only touched for parent/child I/O.

This also puts it closer to other related fields (children,
child_tailq, parent_status) for improved readability.

Change-Id: I120df1df0c967d2f74daa6e97c0bc83626e3be7f
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
2015-12-24 12:21:55 -07:00
doc ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
examples nvme/identify: identify more NVMe 1.2 features 2015-12-23 09:06:00 -07:00
include/spdk nvme/identify: identify more NVMe 1.2 features 2015-12-23 09:06:00 -07:00
lib nvme: reorder parent member of struct nvme_request 2015-12-24 12:21:55 -07:00
mk build: undefine _FORTIFY_SOURCE before setting it 2015-12-22 10:15:06 -07:00
scripts ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
test nvme: mark a few more functions static 2015-12-23 08:59:49 -07:00
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.gitignore build: add CONFIG_COVERAGE code coverage option 2015-11-02 14:40:49 -07:00
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autobuild.sh autobuild: add sleep to fix dependency test 2015-11-03 15:19:36 -07:00
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autotest.sh ioat: add user-mode Intel I/OAT driver 2015-12-09 10:14:15 -07:00
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LICENSE SPDK: Initial check-in 2015-09-21 08:52:41 -07:00
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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
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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