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Write Saturation

View  IOPS from FOB to Steady State with WSAT Plots.  RND 4KiB W IOPS by Time or Capacity Fills in Total GB Written (“TGBW”).

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IOPS

Steady State IOPS – 56 Element Matrix of 8 BS by 7 R/W mixes.  BS 0.5KiB to 1024KiB at R/W Mix from 100%W to 100%R.

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IOPS 3D BAR

View discrete Block Size / R/W mixes via 3D Bar Plot – IOPS Y axis, Block Size X axis and R/W mix on Z axis.

 
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IOPS 2D Plot

View discrete Block Size / R/W mixes via 2D Plot – IOPS Y axis, Block Size X axis, R/W mixes as series.  Log or Linear Scale.

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Throughput SS

Throughput (in MB/s ) for SEQ 1024KiB at 100% R/W.  1024KiB Steady State Convergence and SS Window shown.

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Latency Pre Conditioning

View Pre Conditioning Rounds for AVE Latency.  Block Sizes 0.5KiB, 4KiB and 8 KiB for 100%W, 65:35 R/W  and 100%R R/W mixes.

 
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Resp Time Histograms

Frequency and Distribution of Response Times show Quality of Service.  Number of IOPs counted per bin by Time in msec.

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Demand Intensity

Response to Increase in Driving Load in Outstanding IOs (OIOs).  IOPS X axis, Ave Resp Time Y axis.  Data series in OIOs.

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Demand Variation

Choose Optimal TC/QD for a given Access Pattern. IOPS Y axis, OIO/Thread (QD) X axis.  Thread Counts as Data Series.

 
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Host Idle Recovery

Performance Response to varying periods of Host Idles.  Relationship of varying Idle Times to Performance Recovery.

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Cross Stimulus Recovery

See Transition Responses after periods of sustained Stimuli.  Helpful for understanding VM and Multi-User workloads.

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Over Provisioning

See changes in Performance by varying the amount of Over Provisioning (by changing the Active Range).