nfs sync enabled

qemu testing on Ubuntu 16.04 via the Phoronix Test Suite.

HTML result view exported from: https://openbenchmarking.org/result/1811015-RA-NFSSYNCEN00.

nfs sync enabledProcessorMotherboardChipsetMemoryDiskGraphicsNetworkOSKernelCompilerFile-SystemScreen ResolutionSystem Layernfs sync enablednfs sunc enabledCommon KVM @ 3.20GHz (2 Cores)QEMU Standard PC (i440FX + PIIX 1996) (rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org BIOS)Intel 440FX- 82441FX PMC1 x 4096 MB RAM QEMU45GBEFI VGARed Hat Virtio deviceUbuntu 16.044.4.0-138-generic (x86_64)GCC 5.4.0 20160609ext4800x600qemuOpenBenchmarking.orgCompiler Details- --build=x86_64-linux-gnu --disable-browser-plugin --disable-vtable-verify --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,ada,c++,java,go,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --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-default-libstdcxx-abi=new --with-multilib-list=m32,m64,mx32 --with-tune=generic -v Disk Mount Options Details- data=ordered,errors=remount-ro,relatime,rwSecurity Details- KPTI + __user pointer sanitization + Full generic retpoline + PTE Inversion

nfs sync enablediozone: 1MB - 512MB - Read Performanceiozone: 1MB - 512MB - Write Performancenfs sync enablednfs sunc enabled5318552987.58OpenBenchmarking.org

IOzone

Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.465Record Size: 1MB - File Size: 512MB - Disk Test: Read Performancenfs sync enablednfs sunc enabled12002400360048006000SE +/- 119.66, N = 12SE +/- 81.47, N = 5531855291. (CC) gcc options: -O3

IOzone

Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance

OpenBenchmarking.orgMB/s, More Is BetterIOzone 3.465Record Size: 1MB - File Size: 512MB - Disk Test: Write Performancenfs sunc enabled20406080100SE +/- 8.23, N = 1287.581. (CC) gcc options: -O3

Phoronix Test Suite v10.8.4