7. UADK Compression Poll Mode Driver
UADK compression PMD provides poll mode compression & decompression driver. All compression operations are using UADK library compression API, which is algorithm-level API, abstracting accelerators’ low-level implementations.
UADK compression PMD relies on UADK library.
UADK is a framework for user applications to access hardware accelerators. UADK relies on IOMMU SVA (Shared Virtual Address) feature, which shares the same page table between IOMMU and MMU. As a result, the user application can directly use the virtual address for device DMA, which enhances performance as well as easy usability.
7.1. Features
UADK compression PMD has support for:
Compression/Decompression algorithm:
DEFLATE - using Fixed and Dynamic Huffman encoding
Window size support:
32K
7.2. Test steps
Build UADK
git clone https://github.com/Linaro/uadk.git cd uadk mkdir build ./autogen.sh ./configure --prefix=$PWD/build make make install
Note
Without
--prefix
, UADK will be installed to/usr/local/lib
by default.Note
If get error: “cannot find -lnuma”, please install the libnuma-dev.
Run pkg-config libwd to ensure env is setup correctly
export PKG_CONFIG_PATH=$PWD/build/lib/pkgconfig pkg-config libwd --cflags --libs -I/usr/local/include -L/usr/local/lib -lwd
Note
export
PKG_CONFIG_PATH
is required on demand, not needed if UADK is installed to/usr/local/lib
.Build DPDK
cd dpdk mkdir build meson setup build (--reconfigure) cd build ninja sudo ninja install
Prepare hugepages for DPDK (see also dpdk-hugepages Application)
echo 1024 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages echo 1024 > /sys/devices/system/node/node1/hugepages/hugepages-2048kB/nr_hugepages echo 1024 > /sys/devices/system/node/node2/hugepages/hugepages-2048kB/nr_hugepages echo 1024 > /sys/devices/system/node/node3/hugepages/hugepages-2048kB/nr_hugepages mkdir -p /mnt/huge_2mb mount -t hugetlbfs none /mnt/huge_2mb -o pagesize=2MB
Run test app
sudo dpdk-test --vdev=compress_uadk RTE>>compressdev_autotest RTE>>quit