openstacklinuxserverio1804tiobench

KVM testing on Ubuntu 18.04 via the Phoronix Test Suite.

Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1911193-KH-OPENSTACK05
Jump To Table - Results

Statistics

Remove Outliers Before Calculating Averages

Graph Settings

Prefer Vertical Bar Graphs

Multi-Way Comparison

Condense Multi-Option Tests Into Single Result Graphs

Table

Show Detailed System Result Table

Run Management

Result
Identifier
Performance Per
Dollar
Date
Run
  Test
  Duration
openstack linux serverio 1804 tio benchas
November 19 2019
 
Only show results matching title/arguments (delimit multiple options with a comma):
Do not show results matching title/arguments (delimit multiple options with a comma):


openstacklinuxserverio1804tiobenchOpenBenchmarking.orgPhoronix Test Suite8 x Intel Core (Skylake IBRS) @ 2.40GHz (8 Cores)OpenStack Foundation Nova v17.0.9Intel 440FX- 82441FX PMC16384 MB + 8192 MB RAM388GBCirrus Logic GD 5446Red Hat Virtio deviceUbuntu 18.044.15.0-65-generic (x86_64)ext4KVMProcessorMotherboardChipsetMemoryDiskGraphicsNetworkOSKernelFile-SystemSystem LayerOpenstacklinuxserverio1804tiobench BenchmarksSystem Logs- --build=x86_64-linux-gnu --disable-vtable-verify --disable-werror --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-gnu-unique-object --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --enable-libmpx --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-multiarch --enable-multilib --enable-nls --enable-objc-gc=auto --enable-offload-targets=nvptx-none --enable-plugin --enable-shared --enable-threads=posix --host=x86_64-linux-gnu --program-prefix=x86_64-linux-gnu- --target=x86_64-linux-gnu --with-abi=m64 --with-arch-32=i686 --with-default-libstdcxx-abi=new --with-gcc-major-version-only --with-multilib-list=m32,m64,mx32 --with-target-system-zlib --with-tune=generic --without-cuda-driver -v - data=ordered,relatime,rw

openstacklinuxserverio1804tiobenchtiobench: Read - 32MB - 4tiobench: Read - 32MB - 8tiobench: Read - 64MB - 4tiobench: Read - 64MB - 8tiobench: Read - 128MB - 4tiobench: Read - 128MB - 8tiobench: Read - 256MB - 4tiobench: Read - 256MB - 8tiobench: Read - 32MB - 16tiobench: Read - 32MB - 32tiobench: Read - 64MB - 16tiobench: Read - 64MB - 32tiobench: Write - 32MB - 4tiobench: Write - 32MB - 8tiobench: Write - 64MB - 4tiobench: Write - 64MB - 8tiobench: Read - 128MB - 16tiobench: Read - 128MB - 32tiobench: Read - 256MB - 16tiobench: Read - 256MB - 32tiobench: Write - 128MB - 4tiobench: Write - 128MB - 8tiobench: Write - 256MB - 4tiobench: Write - 256MB - 8tiobench: Write - 32MB - 16tiobench: Write - 32MB - 32tiobench: Write - 64MB - 16tiobench: Write - 64MB - 32tiobench: Write - 128MB - 16tiobench: Write - 128MB - 32tiobench: Write - 256MB - 16tiobench: Write - 256MB - 32tiobench: Rand Read - 32MB - 4tiobench: Rand Read - 32MB - 8tiobench: Rand Read - 64MB - 4tiobench: Rand Read - 64MB - 8tiobench: Rand Read - 128MB - 4tiobench: Rand Read - 128MB - 8tiobench: Rand Read - 256MB - 4tiobench: Rand Read - 256MB - 8tiobench: Rand Read - 32MB - 16tiobench: Rand Read - 32MB - 32tiobench: Rand Read - 64MB - 16tiobench: Rand Read - 64MB - 32tiobench: Rand Write - 32MB - 4tiobench: Rand Write - 32MB - 8tiobench: Rand Write - 64MB - 4tiobench: Rand Write - 64MB - 8tiobench: Rand Read - 128MB - 16tiobench: Rand Read - 128MB - 32tiobench: Rand Read - 256MB - 16tiobench: Rand Read - 256MB - 32tiobench: Rand Write - 128MB - 4tiobench: Rand Write - 128MB - 8tiobench: Rand Write - 256MB - 4tiobench: Rand Write - 256MB - 8tiobench: Rand Write - 32MB - 16tiobench: Rand Write - 32MB - 32tiobench: Rand Write - 64MB - 16tiobench: Rand Write - 64MB - 32tiobench: Rand Write - 128MB - 16tiobench: Rand Write - 128MB - 32tiobench: Rand Write - 256MB - 16tiobench: Rand Write - 256MB - 32openstack linux serverio 1804 tio benchas9190.349304.6010748.5912251.229209.7311281.448466.8311482.1013579.6312572.7711766.4711537.715.227.865.447.0410889.999419.917491.866526.715.306.435.136.1410.8614.259.3412.788.5111.657.649.9644087.4346481.7270457.5591474.49140893.90133345.11196467.88221111.7353574.2556117.7775492.9183072.01571.81522.341178.11922.82163471.04176654.73230735.15217907.582140.501764.023941.353154.98394.77362.52716.83636.691425.541290.412846.301036.53OpenBenchmarking.org

Threaded I/O Tester

Tiotester (Threaded I/O Tester) benchmarks the hard disk drive / file-system performance. Learn more via the OpenBenchmarking.org test page.

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 32MB - Thread Count: 4openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 614.33, N = 69190.341. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 32MB - Thread Count: 8openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 454.09, N = 69304.601. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 64MB - Thread Count: 4openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 88.75, N = 310748.591. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 64MB - Thread Count: 8openstack linux serverio 1804 tio benchas3K6K9K12K15KSE +/- 131.54, N = 312251.221. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 128MB - Thread Count: 4openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 654.09, N = 69209.731. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 128MB - Thread Count: 8openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 396.09, N = 611281.441. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 256MB - Thread Count: 4openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 312.97, N = 68466.831. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 256MB - Thread Count: 8openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 314.35, N = 611482.101. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 32MB - Thread Count: 16openstack linux serverio 1804 tio benchas3K6K9K12K15KSE +/- 433.15, N = 613579.631. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 32MB - Thread Count: 32openstack linux serverio 1804 tio benchas3K6K9K12K15KSE +/- 328.14, N = 612572.771. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 64MB - Thread Count: 16openstack linux serverio 1804 tio benchas3K6K9K12K15KSE +/- 373.39, N = 611766.471. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 64MB - Thread Count: 32openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 412.88, N = 611537.711. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 32MB - Thread Count: 4openstack linux serverio 1804 tio benchas1.17452.3493.52354.6985.8725SE +/- 0.03, N = 35.221. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 32MB - Thread Count: 8openstack linux serverio 1804 tio benchas246810SE +/- 0.50, N = 67.861. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 64MB - Thread Count: 4openstack linux serverio 1804 tio benchas1.2242.4483.6724.8966.12SE +/- 0.48, N = 65.441. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 64MB - Thread Count: 8openstack linux serverio 1804 tio benchas246810SE +/- 0.26, N = 67.041. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 128MB - Thread Count: 16openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 312.88, N = 610889.991. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 128MB - Thread Count: 32openstack linux serverio 1804 tio benchas2K4K6K8K10KSE +/- 361.02, N = 69419.911. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 256MB - Thread Count: 16openstack linux serverio 1804 tio benchas16003200480064008000SE +/- 234.53, N = 67491.861. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Read - Size Per Thread: 256MB - Thread Count: 32openstack linux serverio 1804 tio benchas14002800420056007000SE +/- 321.39, N = 66526.711. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 128MB - Thread Count: 4openstack linux serverio 1804 tio benchas1.19252.3853.57754.775.9625SE +/- 0.26, N = 65.301. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 128MB - Thread Count: 8openstack linux serverio 1804 tio benchas246810SE +/- 0.17, N = 66.431. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 256MB - Thread Count: 4openstack linux serverio 1804 tio benchas1.15432.30863.46294.61725.7715SE +/- 0.08, N = 65.131. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 256MB - Thread Count: 8openstack linux serverio 1804 tio benchas246810SE +/- 0.12, N = 36.141. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 32MB - Thread Count: 16openstack linux serverio 1804 tio benchas3691215SE +/- 0.58, N = 610.861. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 32MB - Thread Count: 32openstack linux serverio 1804 tio benchas48121620SE +/- 0.47, N = 614.251. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 64MB - Thread Count: 16openstack linux serverio 1804 tio benchas3691215SE +/- 0.33, N = 69.341. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 64MB - Thread Count: 32openstack linux serverio 1804 tio benchas3691215SE +/- 0.41, N = 612.781. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 128MB - Thread Count: 16openstack linux serverio 1804 tio benchas246810SE +/- 0.24, N = 68.511. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 128MB - Thread Count: 32openstack linux serverio 1804 tio benchas3691215SE +/- 0.37, N = 611.651. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 256MB - Thread Count: 16openstack linux serverio 1804 tio benchas246810SE +/- 0.13, N = 47.641. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Write - Size Per Thread: 256MB - Thread Count: 32openstack linux serverio 1804 tio benchas3691215SE +/- 0.09, N = 39.961. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 32MB - Thread Count: 4openstack linux serverio 1804 tio benchas9K18K27K36K45KSE +/- 1353.34, N = 644087.431. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 32MB - Thread Count: 8openstack linux serverio 1804 tio benchas10K20K30K40K50KSE +/- 4371.46, N = 646481.721. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 64MB - Thread Count: 4openstack linux serverio 1804 tio benchas15K30K45K60K75KSE +/- 6361.37, N = 670457.551. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 64MB - Thread Count: 8openstack linux serverio 1804 tio benchas20K40K60K80K100KSE +/- 6400.90, N = 691474.491. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 128MB - Thread Count: 4openstack linux serverio 1804 tio benchas30K60K90K120K150KSE +/- 11595.44, N = 6140893.901. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 128MB - Thread Count: 8openstack linux serverio 1804 tio benchas30K60K90K120K150KSE +/- 6980.01, N = 6133345.111. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 256MB - Thread Count: 4openstack linux serverio 1804 tio benchas40K80K120K160K200KSE +/- 23356.08, N = 6196467.881. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 256MB - Thread Count: 8openstack linux serverio 1804 tio benchas50K100K150K200K250KSE +/- 23630.64, N = 6221111.731. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 32MB - Thread Count: 16openstack linux serverio 1804 tio benchas11K22K33K44K55KSE +/- 6300.45, N = 653574.251. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 32MB - Thread Count: 32openstack linux serverio 1804 tio benchas12K24K36K48K60KSE +/- 5149.29, N = 656117.771. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 64MB - Thread Count: 16openstack linux serverio 1804 tio benchas16K32K48K64K80KSE +/- 10337.90, N = 675492.911. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 64MB - Thread Count: 32openstack linux serverio 1804 tio benchas20K40K60K80K100KSE +/- 4146.43, N = 683072.011. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 32MB - Thread Count: 4openstack linux serverio 1804 tio benchas120240360480600SE +/- 9.06, N = 3571.811. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 32MB - Thread Count: 8openstack linux serverio 1804 tio benchas110220330440550SE +/- 23.01, N = 6522.341. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 64MB - Thread Count: 4openstack linux serverio 1804 tio benchas30060090012001500SE +/- 36.32, N = 61178.111. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 64MB - Thread Count: 8openstack linux serverio 1804 tio benchas2004006008001000SE +/- 32.66, N = 6922.821. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 128MB - Thread Count: 16openstack linux serverio 1804 tio benchas40K80K120K160K200KSE +/- 33956.90, N = 6163471.041. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 128MB - Thread Count: 32openstack linux serverio 1804 tio benchas40K80K120K160K200KSE +/- 20976.67, N = 6176654.731. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 256MB - Thread Count: 16openstack linux serverio 1804 tio benchas50K100K150K200K250KSE +/- 30078.84, N = 6230735.151. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Read - Size Per Thread: 256MB - Thread Count: 32openstack linux serverio 1804 tio benchas50K100K150K200K250KSE +/- 15074.75, N = 6217907.581. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 128MB - Thread Count: 4openstack linux serverio 1804 tio benchas5001000150020002500SE +/- 34.22, N = 42140.501. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 128MB - Thread Count: 8openstack linux serverio 1804 tio benchas400800120016002000SE +/- 44.38, N = 61764.021. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 256MB - Thread Count: 4openstack linux serverio 1804 tio benchas8001600240032004000SE +/- 69.55, N = 33941.351. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 256MB - Thread Count: 8openstack linux serverio 1804 tio benchas7001400210028003500SE +/- 51.22, N = 43154.981. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 32MB - Thread Count: 16openstack linux serverio 1804 tio benchas90180270360450SE +/- 17.19, N = 6394.771. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 32MB - Thread Count: 32openstack linux serverio 1804 tio benchas80160240320400SE +/- 18.59, N = 6362.521. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 64MB - Thread Count: 16openstack linux serverio 1804 tio benchas150300450600750SE +/- 18.75, N = 6716.831. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 64MB - Thread Count: 32openstack linux serverio 1804 tio benchas140280420560700SE +/- 12.04, N = 6636.691. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 128MB - Thread Count: 16openstack linux serverio 1804 tio benchas30060090012001500SE +/- 37.49, N = 61425.541. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 128MB - Thread Count: 32openstack linux serverio 1804 tio benchas30060090012001500SE +/- 41.76, N = 61290.411. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 256MB - Thread Count: 16openstack linux serverio 1804 tio benchas6001200180024003000SE +/- 103.37, N = 62846.301. (CC) gcc options: -O2

OpenBenchmarking.orgMB/s, More Is BetterThreaded I/O Tester 20170503Test: Random Write - Size Per Thread: 256MB - Thread Count: 32openstack linux serverio 1804 tio benchas2004006008001000SE +/- 28.12, N = 61036.531. (CC) gcc options: -O2

64 Results Shown

Threaded I/O Tester:
  Read - 32MB - 4
  Read - 32MB - 8
  Read - 64MB - 4
  Read - 64MB - 8
  Read - 128MB - 4
  Read - 128MB - 8
  Read - 256MB - 4
  Read - 256MB - 8
  Read - 32MB - 16
  Read - 32MB - 32
  Read - 64MB - 16
  Read - 64MB - 32
  Write - 32MB - 4
  Write - 32MB - 8
  Write - 64MB - 4
  Write - 64MB - 8
  Read - 128MB - 16
  Read - 128MB - 32
  Read - 256MB - 16
  Read - 256MB - 32
  Write - 128MB - 4
  Write - 128MB - 8
  Write - 256MB - 4
  Write - 256MB - 8
  Write - 32MB - 16
  Write - 32MB - 32
  Write - 64MB - 16
  Write - 64MB - 32
  Write - 128MB - 16
  Write - 128MB - 32
  Write - 256MB - 16
  Write - 256MB - 32
  Rand Read - 32MB - 4
  Rand Read - 32MB - 8
  Rand Read - 64MB - 4
  Rand Read - 64MB - 8
  Rand Read - 128MB - 4
  Rand Read - 128MB - 8
  Rand Read - 256MB - 4
  Rand Read - 256MB - 8
  Rand Read - 32MB - 16
  Rand Read - 32MB - 32
  Rand Read - 64MB - 16
  Rand Read - 64MB - 32
  Rand Write - 32MB - 4
  Rand Write - 32MB - 8
  Rand Write - 64MB - 4
  Rand Write - 64MB - 8
  Rand Read - 128MB - 16
  Rand Read - 128MB - 32
  Rand Read - 256MB - 16
  Rand Read - 256MB - 32
  Rand Write - 128MB - 4
  Rand Write - 128MB - 8
  Rand Write - 256MB - 4
  Rand Write - 256MB - 8
  Rand Write - 32MB - 16
  Rand Write - 32MB - 32
  Rand Write - 64MB - 16
  Rand Write - 64MB - 32
  Rand Write - 128MB - 16
  Rand Write - 128MB - 32
  Rand Write - 256MB - 16
  Rand Write - 256MB - 32