Experience fr from Two Years of f Vis isualizing Fla lash wit - PowerPoint PPT Presentation

Aug 11, 2023 •215 likes •359 views

Experience fr from Two Years of f Vis isualizing Fla lash wit ith SSDPlayer Gala Yadgar Roman Shor Computer Science Technion 1854 Broad Street cholera outbreak 2 Images taken from Wikipedia -

Experience fr from Two Years of f Vis isualizing Fla lash wit ith SSDPlayer Gala Yadgar Roman Shor Computer Science Technion
1854 Broad Street cholera outbreak 2 Images taken from Wikipedia - https://en.wikipedia.org/wiki/1854_Broad_Street_cholera_outbreak
Visualization Benefits of visualization • Comprehend complex situations. • Spot aspects that may otherwise go unnoticed. • Explain abstract concepts. Storage visualization use cases • Education • Presentation • Research • Collaboration 3
Scientific Visualization • Natural sciences • Data analysis • Network Analysis • Storage systems Images taken from Wikipedia - https://en.wikipedia.org/wiki/Scientific_visualization 4
Visualizing SSD • Where Is The Data? Static data representation is not good enough for flash based SSD. block1 block1 block1 page1 page1 page1 page64 page64 page64 block256 block256 block256 page1 page1 page1 page64 page64 page64 • Histograms show us overall statistics and momentary state. Chip 0 Plane 0 Block 0: 94 53 95 42 61 86 62 16 2 … Block 1: 26 37 79 22 30 17 48 94 4 … Block 2: 28 63 44 70 26 46 42 51 47 … Block 3: 75 67 45 12 72 88 90 37 19 … Block 4: 91 80 18 34 91 91 45 51 45 … Block 5: 54 56 70 34 49 87 59 54 82 … … Chip 0 Plane 1 Block 0: 97 81 42 75 13 12 84 69 86 … 5 Block 1: 94 70 48 22 81 48 89 24 100 … Block 2: 69 28 86 42 58 88 16 38 68 … … … … …
Education use case: Write Amplification http://ssdplayer.cswp.cs.technion.ac.il/demos/greedy-zipf/ 6
Education use case: SSDPlayer Design chip plane • General block color • Simple page texture - No timing frame - Write-only workloads • Flexible - Appearance - Input - Features continuous histograms states and stats zoom levels and details • Java open source project 7
Collaboration use case Skewed workload with temperature tags http://ssdplayer.cswp.cs.technion.ac.il/sample-page/hotcold-1/ 8
Collaboration use case Analyzing Hot and cold data separation http://ssdplayer.cswp.cs.technion.ac.il/demos/hotcold-5/
Collaboration use case Visualizing large scale devices, zoom in and out of 32K pages device http://ssdplayer.cswp.cs.technion.ac.il/demos/large-hotcold-5/ 10
Presentation with SSDPlayer Visualization mode: your own data and platform. Replay of FTL with reusable pages, implemented on OpenSSD board. Presented at FAST ’ 16 “ The Devil Is in the Details: Implementing Flash Page Reuse with WOM Codes ” [Margaglia , Yadgar, Yaakobi, Li, Schuster, Brinkmann] http://ssdplayer.cswp.cs.technion.ac.il/demos/llh-ftl-msr/ 11
Research use case: internal RAID • Enhancing flash reliability with internal RAID http://ssdplayer.cswp.cs.technion.ac.il/demos/raid5-parity/ 12
Research use case: internal RAID • Decreasing write amplification by separating data from parity http://ssdplayer.cswp.cs.technion.ac.il/demos/raid5-separate-parity/ 13
Conclusions Benefits of visualization • Education • Presentation • Research • Collaboration Using SSDPlayer • Watch the demos • Download executable • Develop and Contribute 14 http://ssdplayer.cswp.cs.technion.ac.il/

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