p1 800 B

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  1. .SH
  2. Process Structure
  3. .PP
  4. The Plan 9 file system server is made from
  5. an ancient version of the Plan 9 kernel.
  6. The kernel contains process control,
  7. synchronization,
  8. locks,
  9. and some memory
  10. allocation.
  11. The kernel has no user processes or
  12. virtual memory.
  13. .PP
  14. The structure of the file system server
  15. is a set of kernel processes
  16. synchronizing mostly through message passing.
  17. In
  18. .I fs64
  19. there are 27 processes of 11 types:
  20. .KS
  21. .TS
  22. center ;
  23. c l c
  24. n lf(CW) l .
  25. number name function
  26. _
  27. 15 srv Main file system server processes
  28. 1 rah Block read-ahead processes
  29. 1 scp Sync process
  30. 1 wcp WORM copy process
  31. 1 con Console process
  32. 1 ilo IL protocol process
  33. 1 ilt IL timer process
  34. 2 ethi Ethernet input process
  35. 2 etho Ethernet output process
  36. 1 flo Floppy disk process
  37. 1 snt sntp clock-synchronisation process
  38. .TE
  39. .KE