aio-virtio-blk-directsync-cache-mode 4 x AMD Opteron 23xx (Gen 3 Class Opteron) testing with a QEMU Standard PC (i440FX + PIIX 1996) and Cirrus Logic GD 5446 on Ubuntu 14.04 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1501243-SO-AIOVIRTIO21 .
aio-virtio-blk-directsync-cache-mode Processor Motherboard Chipset Memory Disk Graphics Network OS Kernel Compiler File-System Screen Resolution virtio-blk-directsync-cache-mode 4 x AMD Opteron 23xx (Gen 3 Class Opteron) @ 2.30GHz (4 Cores) QEMU Standard PC (i440FX + PIIX 1996) Intel 440FX- 82441FX PMC 1 x 6144 MB RAM 16GB Cirrus Logic GD 5446 Red Hat Virtio device Ubuntu 14.04 3.13.0-24-generic (x86_64) GCC 4.8 ext4 800x600 OpenBenchmarking.org - --build=x86_64-linux-gnu --disable-browser-plugin --disable-libmudflap --disable-werror --enable-checking=release --enable-clocale=gnu --enable-gnu-unique-object --enable-gtk-cairo --enable-java-awt=gtk --enable-java-home --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-nls --enable-objc-gc --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-multilib-list=m32,m64,mx32 --with-tune=generic -v - data=ordered,errors=remount-ro,relatime,rw
aio-virtio-blk-directsync-cache-mode aio-stress: Rand Write Standard Error Standard Deviation virtio-blk-directsync-cache-mode 43.58 3.32 18.65% OpenBenchmarking.org
AIO-Stress Test: Random Write OpenBenchmarking.org MB/s, More Is Better AIO-Stress 0.21 Test: Random Write virtio-blk-directsync-cache-mode 10 20 30 40 50 SE +/- 3.32, N = 6 43.58 1. (CC) gcc options: -pthread -laio
Phoronix Test Suite v10.8.4