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NetSta Q ADMA-100

Learn about breaking bottlenecks in data transfer with detailed statistics, legacy command flow, and ADMA improvements to boost performance.

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NetSta Q ADMA-100

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  1. NetStaQ ADMA-100 Breaking the Bottlenecks By Curtis E. Stevens Don Doan

  2. Agenda • Introduction to ADMA • Performance Statistics Pacific Digital Corporation

  3. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  4. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  5. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  6. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  7. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  8. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  9. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  10. LegacyCommand & Interrupt Flow Drive dead time Pacific Digital Corporation

  11. LegacyCommand & Interrupt Flow Drive dead time Pacific Digital Corporation

  12. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  13. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  14. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  15. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  16. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  17. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  18. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  19. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  20. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  21. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  22. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  23. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  24. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  25. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  26. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  27. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  28. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  29. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  30. LegacyCommand & Interrupt Flow Pacific Digital Corporation

  31. Legacy Transfer Statistics • Ultra DMA data transfer • 8 I/O’s per command • Includes 7 I/O’s for storing the command • Includes 1 I/O to read the status register in the interrupt • Additional I/O’s to setup DMA controller • 1 Interrupt per command Pacific Digital Corporation

  32. ADMACommand & Interrupt Flow Pacific Digital Corporation

  33. ADMACommand & Interrupt Flow Pacific Digital Corporation

  34. ADMACommand & Interrupt Flow Pacific Digital Corporation

  35. ADMACommand & Interrupt Flow Pacific Digital Corporation

  36. ADMACommand & Interrupt Flow Pacific Digital Corporation

  37. ADMACommand & Interrupt Flow Pacific Digital Corporation

  38. ADMACommand & Interrupt Flow Pacific Digital Corporation

  39. ADMACommand & Interrupt Flow Pacific Digital Corporation

  40. ADMACommand & Interrupt Flow Pacific Digital Corporation

  41. ADMACommand & Interrupt Flow Pacific Digital Corporation

  42. ADMACommand & Interrupt Flow Pacific Digital Corporation

  43. ADMACommand & Interrupt Flow Pacific Digital Corporation

  44. ADMACommand & Interrupt Flow Pacific Digital Corporation

  45. ADMACommand & Interrupt Flow Pacific Digital Corporation

  46. ADMACommand & Interrupt Flow Pacific Digital Corporation

  47. ADMACommand & Interrupt Flow Pacific Digital Corporation

  48. ADMACommand & Interrupt Flow Pacific Digital Corporation

  49. ADMACommand & Interrupt Flow Pacific Digital Corporation

  50. ADMA Transfer Statistics • Ultra DMA data transfer • No I/O • ADMA registers are memory mapped • ADMA uses normal PCI memory reads and writes to retrieve commands • 1 Interrupt per group of I/O requests • Commands that complete while an ADMA interrupt is processed will not generate an additional interrupt Pacific Digital Corporation

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