Spike Free Low Latency

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  • Spike Free Low Latency

    1. 1. Comparing response time performance betweenViolin Memory Arrays and SSD-based arrays<br />
    2. 2. Spike Free Low Latency<br />Violin uses several techniques to deliver consistent low latency performance<br />Unique flash vRAID technology (4 bits + 1 parity)<br />Striping across multiple flash modules for parallel access<br />Intelligent scheduling: Reads/Writes are never blocked by Erases<br />2<br />©2011 Violin Memory, Inc.<br />
    3. 3. Spike Free Low Latency<br />Goals<br />Low Latency<br />Minimize number of spikes<br />Minimize magnitude of spikes<br />Some graphs comparing Violin to SSD arrays at 10% load…<br />3<br />©2011 Violin Memory, Inc.<br />
    4. 4. Spike Free Low Latency<br />4<br />©2011 Violin Memory, Inc.<br />10% Load<br />Violin Latency<br />Fastest performance<br />Least variability<br />No spikes<br />
    5. 5. Spike Free Low Latency<br />Under heavier load (50%, 90%) thedifference is more dramatic…<br />5<br />©2011 Violin Memory, Inc.<br />
    6. 6. Spike Free Low Latency<br />6<br />©2011 Violin Memory, Inc.<br />50% Load<br />Violin Performance consistent<br />SSD Performance Degrades<br />Higher latency<br />More variability<br />Many spikes<br />
    7. 7. Spike Free Low Latency<br />7<br />©2011 Violin Memory, Inc.<br />90% Load<br />Violin Performance consistent<br />SSD Performance Degrades<br />Much higher latency<br />High variability<br />Many spikes<br />
    8. 8. Spike Free Low Latency<br />Thank You<br />www.vmem.com<br />8<br />©2011 Violin Memory, Inc.<br />

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